Integrated Science Final Reveiw

Integrated Science Final Reveiw

by David Blankenship

Multiple Choice

What biomolecule do enzymes belong to? 

• Carbohydrate
• Lipid
• Nucleic Acid
• Protein

Multiple Choice

Samuel adds a teaspoon of salt to a glass of water. He notices that the salt disappears. Samuel takes a sip to discover that the water tastes salty. What kind of change has occurred?

• It’s a chemical reaction because a new substance has formed.

• It’s a physical change because the water and the salt kept their original properties.

• It’s an example of synthesis because two substances reacted to give one substance.

• It’s a chemical reaction because the water now tastes salty but originally did not.

Multiple Choice

The chemical formula for sulfuric acid is H₂SO₄.

In 2H₂SO₄, the number of sulfur atoms is ___?

• 1

• 2

• 4

• 8

Multiple Choice

Which chemical reaction shows photosynthesis?

• water + carbon dioxide + sunlight → oxygen + glucose

• carbon + oxygen → carbon dioxide

• hydrogen + oxygen → water

• nitrogen + hydrogen → ammonia

Multiple Choice

Jack tries to place magnets on the door of his refrigerator. He observes that the magnets don’t stick. He guesses that the door of the refrigerator is made of a nonmagnetic substance. What stage of scientific investigation does his guess represent?

• A. ask questions

• B. construct a hypothesis

• C. explain the results

• D. make observations

Multiple Choice

Which of these reactions is a combustion reaction?

• burning wood

• decomposition of water

• production of food by plants with the help of the Sun's energy

• rotting of fruits and vegetables

Multiple Choice

The chemical formula for sulfuric acid is H₂SO₄.

In 2H₂SO₄, the number of oxygen atoms is _____?

• 1

• 2

• 4

• 8

Multiple Select

Which sentences describe disadvantages of burning fossil fuels instead of using hydrogen fuel cells?

• Burning fossil fuels pollutes the environment.

• Burning fossil fuels takes place inside expensive fuel cells.

• Fossil fuels aren’t widely available, but pure hydrogen is.

• Fossil fuels are nonrenewable.

Multiple Choice

Carbon burns in the presence of oxygen to give carbon dioxide. Which chemical equation describes this reaction?

• carbon + oxygen + carbon dioxide

• carbon + oxygen → carbon dioxide

• carbon dioxide → carbon + oxygen

• carbon dioxide + carbon → oxygen

Multiple Choice

In a given chemical reaction, the energy of the products is less than the energy of the reactants. Which statement is true for this chemical reaction?

• Energy is absorbed in the reaction.

• Energy is released in the reaction.

• There is no transfer of energy in the reaction.

• Energy is lost in the reaction.

Multiple Choice

When sodium reacts with chlorine, sodium chloride is produced.

Andrew represented this reaction with this equation:

Na + Cl₂ → 2NaCl

The equation is _____________.

• balanced

• not balanced

Multiple Choice

A hydrogen fuel cell is more efficient than a combustion reaction because very little of the released energy is released as ______?

• heat

• electrical energy

• chemical energy

Multiple Choice

Which biomolecule is a main source of quick energy?

• Nucleic Acid
• Protein
• Lipid
• Carbohydrate

Multiple Choice

When used at home, a fuel cell eliminates the need for _________ because the cell is portable.

• oxygen

• hydrogen

• an electrical grid

Multiple Choice

When sodium reacts with chlorine, sodium chloride is produced. Andrew represented this reaction with this equation:

__Na + __Cl₂ →__NaCl

Which set balances the equation?

• 1,1,1

• 1,2,1

• 1,1,2

• 2,1,2

Multiple Choice

In a chemical reaction, activation energy increases __________ of the reactants.

• the amount of chemical energy

• number of particles

• the temperature

Multiple Choice

Iron oxide reacts with aluminum to give aluminum oxide and iron. What kind of chemical reaction is this?

• combustion

• decomposition

• synthesis

• replacement

Multiple Choice

Increasing activation energy causes the particles to collide, which results in the _____________ of new products.

• breaking up

• formation reaction

Multiple Choice

When butane burns in oxygen, it produces carbon dioxide and water. This reaction is represented in this equation:

2C₄H₁₀ + 13O₂ → 8CO₂ + 10H₂O

How many atoms of carbon (C) on each side of the equation?

• 2

• 4

• 6

• 8

Multiple Select

Which chemical reactions are based on whether they absorb energy.

• respiration in cells

• photsynthesis

• burning a candle

• baking bread

• activating a cold pack

Multiple Choice

Meg goes swimming on a hot afternoon. When she comes out of the pool, her foot senses that the pavement is unbearably hot. Suppose Meg wants to apply the scientific method to discover reasons for the hot pavement. What is the next step she should take?

• A. analyze the data

• B. ask questions

• C. communicate the results

• D. make observations

Multiple Select

Which chemical reactions are based on whether they release energy.

• respiration in cells

• producing electric current

• burning a candle

• baking bread

• activating a cold pack

Multiple Choice

When butane burns in oxygen, it produces carbon dioxide and water. This reaction is represented in this equation:

2C₄H₁₀ + 13O₂ → 8CO₂ + 10H₂O

How many atoms of oxygen (O) on each side of the equation?

• 2

• 13

• 15

• 26

Multiple Choice

Arrange the characteristics of the reaction in order from start to finish.

• 1. lower energy of reactants

  2. transition state

  3. higher energy of products

• 1. lower energy of reactants

  2. higher energy of products

  3. transition state

• 1. higher energy of reactants

  2. lower energy of products

  3. transition state

• 1. higher energy of products

  2. transition state

  3. lower energy of reactants

Multiple Choice

What kind of chemical reaction does the chemical equation sodium + chlorine → sodium chloride represent?

• combustion

• decomposition

• single replacement

• synthesis

Multiple Choice

Identify the parts of the energy diagrams.

Part A.

• energy released

• energy absorbed

• reactants

• products

Multiple Choice

When butane burns in oxygen, it produces carbon dioxide and water. This reaction is represented in this equation:

2C₄H₁₀ + 13O₂ → 8CO₂ + 10H₂O

How many atoms of hydrogen (H) on each side of the equation?

• 10

• 12

• 20

• 26

Multiple Choice

Identify the parts of the energy diagrams.

Part B.

• energy released

• energy absorbed

• reactants

• products

Multiple Choice

Which biomolecule is found in fats, oils, and waxes and is a source of long-term energy? 

• Proteins
• Nucleic Acid
• Lipids
• Carbohydrate

Multiple Choice

Identify the parts of the energy diagrams.

PartC.

• energy released

• energy absorbed

• reactants

• products

Multiple Choice

Iron reacts with oxygen to produce iron oxide (rust). This reaction is represented in an equation as 4Fe + xO₂ → 2Fe₂O₃.

Identify the value of x that will balance the equation.

• 1

• 2

• 3

• 4

Multiple Choice

Identify the parts of the energy diagrams.

PartC.

• energy released

• energy absorbed

• reactants

• products

Multiple Choice

Identify the parts of the energy diagrams.

Part B..

• energy released

• energy absorbed

• reactants

• products

Multiple Choice

The chemical formula for artificial sweetener is C₇H₅NO₃S.

Match the elements with the numbers found in one molecule of artificial sweetener.

carbon

• 1

• 3

• 5

• 7

• No Answer

Multiple Choice

Some fuel cells are powered by hydrogen. Scientists are looking into the decomposition of water (H₂O) to make hydrogen fuel with the help of the Sun’s energy.

What challenge do scientists face with this task?

• Decomposing water requires a high activation energy.

• The Sun isn't a renewable resource.

• Decomposing water results in toxic byproducts.

• Scientists are uncertain what to do with the excess oxygen.

Multiple Choice

When a candle burns, which forms of energy does the chemical energy in the candle change to?

• A. light and sound

• B. heat and sound

• C. light and heat

• D. electric and light

Multiple Choice

Scientists are looking into the decomposition of water (H₂O --> H₂ + H₂O) to make hydrogen fuel with the help of the Sun’s energy. What challenge do scientists face with this task?

• Decomposing water requires a high activation energy.

• The Sun isn't a renewable resource.

• Decomposing water results in toxic byproducts.

Multiple Choice

The chemical formula for artificial sweetener is C₇H₅NO₃S.

Match the elements with the numbers found in one molecule of artificial sweetener.

hydrogen

• 1

• 3

• 5

• 7

• No Answer

Multiple Choice

Endothermic reactions ______.

• release more energy than they absorb

• absorb more energy than they release

• release and absorb exactly the same amount of energy

• can either release more energy than they absorb or absorb more energy than

  they release, depending on the reaction

Multiple Choice

Water breaks down into hydrogen and oxygen.

• neutralization

• combustion

• synthesis

• decomposition

Multiple Choice

Energy is _________ when bonds form.

• released

• absorbed

• destroyed

• created

Multiple Choice

The chemical formula for artificial sweetener is C₇H₅NO₃S.

Match the elements with the numbers found in one molecule of artificial sweetener.

sulfur

• 1

• 3

• 5

• 7

• No Answer

Multiple Choice

Energy is _________ when bonds break.

• absorbed

• created

• destoryed

• released

Multiple Choice

What is the function of a nucleic acid?

• Stores genetic information
• Stores energy
• Quick source of energy
• Builds structures

Multiple Choice

Energy is needed to break bonds in chemical reactions.

• True

• False

Multiple Choice

The chemical formula for artificial sweetener is C₇H₅NO₃S.

Match the elements with the numbers found in one molecule of artificial sweetener.

Oxygen

• 1

• 3

• 5

• 7

• No Answer

Multiple Choice

A chemical reaction in which more energy is absorbed than is released is endothermic

• True

• False

Multiple Choice

Leaves make starch using chlorophyll and carbon dioxide.

• neutralization

• combustion

• synthesis

• decomposition

Multiple Choice

Temperature usually _____ in EXOthermic reactions.

• Stays the same

• Increases

• Decreases

Multiple Select

Which chemical equations are being balanced ?

• CaO + 3C → CaC₂ + CO

• Na + H₂O → 2NaOH + H₂

• 4Fe + O₂ → 2Fe₂O₃

• 2Mg + O₂ → 2MgO

Multiple Choice

Photosynthesis is an _____ reaction.

• EXOthermic

• ENDOthermic

Multiple Choice

Based on the law of conservation of energy, which statement is correct?

• A. Energy is always being added to all parts of the Universe.

• B. Energy is often destroyed in some parts of the Universe.

• C. Energy in a closed system cannot change forms.

• D. Energy in an isolated system remains constant.

Multiple Choice

What type of reaction is this?

• Endothermic
• Exothermic

Multiple Choice

Calcium carbonate is a compound that is used to make chalk for drawing on rocks or pavement. One molecule has one atom of calcium (Ca), one atom of carbon (C), and three atoms of oxygen (O). Which is the correct way to write the chemical formula for calcium carbonate?

• 3CaCO

• Ca₃CO

• CaCO₃

• Ca₃C₃O₃

Multiple Choice

Which letter corresponds to the activation energy?

• A

• B

• C

• D

Multiple Choice

Food burns in oxygen gas and releases a lot of energy.

• neutralization

• combustion

• synthesis

• decomposition

Multiple Choice

The picture represents sulfur trioxide.

Which statement is true for one molecule of sulfur trioxide?

• There are three atoms of sulfur and one atom of oxygen.

• There are three atoms of sulfur and three atoms of oxygen.

• There is one atom of sulfur and one atom of oxygen.

• There is one atom of sulfur and three atoms of oxygen.

Multiple Choice

Carbon, Hydrogen, Oxygen and Nitrogen are elements in what biomolecule?

• Carbohydrate
• Lipid
• Protein
• Nucleic acid

Multiple Choice

If blue represents one atom of nitrogen, and   red represents one atom of oxygen, which picture represents 2NO₂?

Multiple Choice

Adding vinegar (acid) to baking soda (alkali) give sa product that is neither acidic nor alkaline.

• neutralization

• combustion

• synthesis

• decomposition

Multiple Choice

Sodium bicarbonate is the chemical name for baking soda. Its chemical formula is NaHCO₃. What does the subscript 3 mean?

• There are three molecules of sodium bicarbonate.

• There are three molecules of oxygen in sodium bicarbonate.

• There are three atoms of oxygen in sodium bicarbonate.

• There are three atoms of sodium bicarbonate.

Multiple Select

Classify the items based on whether they are or are not matter. Check all the examples of matter.

• toothpaste

• light

• gasoline

• cell

• sound

Multiple Choice

The chemical formula for sulfuric acid is H₂SO₄.

In 2H₂SO₄, the number of hydrogen atoms is_____?

• 1

• 2

• 4

• 8

Multiple Choice

Not all tiles will be used. Match the reactants with the products.

copper + oxygen $$\rightarrow$$  

• aluminum chloride + copper

• zinc sulfate + copper

• copper oxide

• copper sulfate + oxygen

• copper + water

Multiple Choice

Which biomolecule is made of nucleotides and contains your DNA?

• Carbohydrate

• Lipids

• Protein

• Nucleic Acid

Multiple Choice

Not all tiles will be used. Match the reactants with the products.

aluminum + copper chloride $$\rightarrow$$  

• aluminum chloride + copper

• zinc sulfate + copper

• copper oxide

• copper sulfate + oxygen

• copper + water

Multiple Select

Select the forms of energy in the image.

• glass

• heat

• light

• tungsten

• electricity

Multiple Choice

Not all tiles will be used. Match the reactants with the products.

copper oxide + hydrogen $$\rightarrow$$  

• aluminum chloride + copper

• zinc sulfate + copper

• copper oxide

• copper sulfate + oxygen

• copper + water

Multiple Choice

Which biomolecule helps form muscles?

• Nucleic Acid

• Carbohydrate

• Protein

• Lipids

Multiple Choice

Not all tiles will be used. Match the reactants with the products.

copper sulfate + zinc $$\rightarrow$$  

• aluminum chloride + copper

• zinc sulfate + copper

• copper oxide

• copper sulfate + oxygen

• copper + water

Multiple Select

Select the volume units that are greater than one liter.

• kiloliter

• milliliter

• megaliter

• centiliter

• nanoliter

Multiple Choice

Identify the following process: We light a matchstick.

• Physical change

• Chemical change

Multiple Choice

What elements are common to all 4 biomolecules?

• Carbon, hydrogen, nitrogen
• Carbon, Nitrogen, Phosphorus
• Carbon, Hydrogen, Oxygen
• Carbon, Hydrogen, Phosphorus

Multiple Choice

What type of changes the appearance change but the substance is the same.

• Physical

• Chemical

Multiple Choice

Identify the type of energy conversion represented by each picture.

• wind energy to electric energy

• electric energy to heat energy

• solar energy to light energy

• electric energy to light energy

Multiple Choice

Identify the following process: The food and the air react.

• Physical change

• Chemical change

Multiple Choice

What are the four biological molecules?

• proteins, carbohydrates, lipids, nucleic acids
• A, T, C, G
• water, air, earth, and fire
• Joe, Nick, and Kevin Jonas

Multiple Choice

The initial substances before occurring the chemical reaction are called...

• Reactants

• Products

Multiple Choice

Identify the type of energy conversion represented by each picture.

• wind energy to electric energy

• electric energy to heat energy

• solar energy to light energy

• electric energy to light energy

Multiple Choice

The new substances after occurring the chemical reaction are called...

• Reactants

• Products

Multiple Choice

Which biomolecule is made of amino acids?

• Nucleic Acid
• Carbohydrate
• Protein
• Lipid

Multiple Choice

What is the speed of this chemical reaction (rusting)

• SLOW

• FAST

Multiple Choice

Identify the type of energy conversion represented by each picture.

• wind energy to electric energy

• electric energy to heat energy

• solar energy to light energy

• electric energy to light energy

Multiple Choice

What is the speed of this chemical reaction

• SLOW
• FAST

Multiple Choice

What are lipids?

• Polymers made of amino acids

• Monomers that store and transfer genetic information

• Fatty acids not generally soluble in water

• Complex carbohydrates like starch

Multiple Choice

What is this ?

• a chemical reaction
• a mathematical equation
• a chemical equation

Multiple Choice

Identify the type of energy conversion represented by each picture.

• wind energy to electric energy

• electric energy to heat energy

• solar energy to light energy

• electric energy to light energy

Multiple Choice

What is this ?

• a chemical reaction
• a mathematical equation
• a chemical equation

Multiple Choice

Which biomolecule makes up cell membranes?

• Protein

• Carbohydrate

• Lipid

• Nucleic acid

Multiple Choice

The mass conservation law says

• During a chemical reaction, atoms are destroyed. The number of atoms don't remains constant throughout the reaction.

• During a chemical reaction, atoms are created. The number of atoms remains constant throughout the reaction.

• During a chemical reaction, atoms are neither created nor destroyed. The number of atoms remains constant throughout the reaction.

Multiple Choice

Match the sentences with the steps of the scientific method.

State a hypothesis.

• An indoor plant in a dark room withers faster than the same

  plant in a room with ample sunlight.

• The plant in the pot with black paper withered.

  The other plant was healthy.

• Sunlight is probably essential for plants to grow and live.

• Plants need sunlight to make food so they can live.

Multiple Choice

Identify the biomolecule

• Carbohydrate

• Lipid

• Protein

• Nucleic Acid

Multiple Choice

Match the sentences with the steps of the scientific method.

Make an observation.

• An indoor plant in a dark room withers faster than the same

  plant in a room with ample sunlight.

• The plant in the pot with black paper withered.

  The other plant was healthy.

• Sunlight is probably essential for plants to grow and live.

• Plants need sunlight to make food so they can live.

Multiple Choice

Enzymes catalyze reactions by ___________ Activation Energy.

• Increasing
• Decreasing

Multiple Choice

Match the sentences with the steps of the scientific method.

Analyze the results.

• An indoor plant in a dark room withers faster than the same

  plant in a room with ample sunlight.

• The plant in the pot with black paper withered.

  The other plant was healthy.

• Sunlight is probably essential for plants to grow and live.

• Plants need sunlight to make food so they can live.

Multiple Choice

The area that the substrate fits into on the enzyme is called the:

• Active Site

• Allosteric Site

• Construction Site

• Geometric Site

Multiple Choice

Match the sentences with the steps of the scientific method.

Communicate the results to others.

• An indoor plant in a dark room withers faster than the same

  plant in a room with ample sunlight.

• The plant in the pot with black paper withered.

  The other plant was healthy.

• Sunlight is probably essential for plants to grow and live.

• Plants need sunlight to make food so they can live.

Multiple Choice

What two activities are basic to most of science?

• Getting good grades and asking questions.

• Paying attention in class and memorizing

• Observing the world and asking questions

• Observing science and reading answers

Multiple Choice

Science starts with gathering ________________________ about the natural world.

• hypothesis

• Answers

• Experiments

• Knowledge

Multiple Choice

The stuff that everything is made of is:

• Earth

• wind

• Water

• Matter

Multiple Choice

The ability to do work is called:

• Power

• energy

• force

• training

Multiple Choice

Moving objects have energy of:

• motion

• Chemical

• Stored

• mechanical

Multiple Choice

SI units to measure volume are:

• Cups and quarts.

• Gallons

• Liters and cubic meter

• Kilograms and pounds

Multiple Choice

How many mL are in 3.5 KL?

• 0.0035 mL

• 3,500 mL

• 35,000 mL

• 3,500,000 mL

Multiple Choice

Convert 70 ounces (Oz) to kilograms

• 4.375 Kg

• 31.76 Kg

• 1.985 Kg

• 1120 Kg

Multiple Choice

Convert 6000 mL to qt

• 6 qt

• 6.34 qt

• 5,676,000 qt

• none

Multiple Choice

Mathew has a filtration kit, which consists of a funnel, a flask, and filter papers. Which of these mixtures can he separate using filtration?

Multiple Select

Check all the sentences based on whether they describe the properties of a heterogeneous mixture.

• Its components are visible.

• It may be mistaken for a pure substance.

• It can be separated using distillation.

• Concrete is an example of this kind of mixture.

Multiple Choice

Which unit is commonly used to measure density?

• A. gcm³

• B. g/cm³

• C. cm³/g

• D. g/cm

Multiple Choice

An alloy is made up of two kinds of metals. This alloy is uniform in appearance. How would this material be classified?

• A. substance

• B. homogeneous mixture

• C. heterogeneous mixture

• D. compound

Multiple Choice

An electric iron is used to remove wrinkles from clothing. The electric iron is made of metal. Which property of this substance is most useful for this application?

• A. boiling point

• B. density

• C. electrical conductivity

• D. thermal conductivity

Multiple Choice

What is a substance?

• A. a uniform mixture that can’t be separated

• B. a mixture that can be separated

• C. a single component that can’t be separated

• D. a single component that can be separated

Multiple Choice

Daniel has a sample of pure copper. Its mass is 89.6 grams (g), and its volume is 10 cubic centimeters (cm³). What’s the density of the sample?

• A. 0.11 g/cm³

• B. 8.96 g/cm³

• C. 11.1 g/cm³

• D. 896 g/cm³

Multiple Choice

Erica is working in the lab. She wants to remove the fine dust particles suspended in a sample of oil. Which method is she most likely to use?

• A. reverse osmosis

• B. osmosis

• C. filtration

• D. dilution

Multiple Choice

Which of the following property does not describe a compound:

• it is composed of two or more elements

• it is a pure substance

• constituents cannot be separated by physical means

• mixed in any proportion by mass

Multiple Choice

Suspension can be separated by filtration.

• TRUE

• FALSE

Multiple Choice

Why does a solid change to liquid when heat is added?

• A. The spacing between particles decreases.

• B. Particles lose energy.

• C. The spacing between particles increases.

• D. The temperature decreases.

Multiple Choice

Why does ice float on water?

• A. The temperature of ice is lower than the temperature of water.

• B. The temperature of water and ice are the same.

• C. The density of ice is less than the density of water.

• D. The density of ice is greater than the density of water.

Multiple Choice

When a perfume bottle is opened, some liquid changes to gas and the fragrance spreads around the room. Which sentence explains this?

• A. Gases do not have a definite volume.

• B. The particles of gases are closely packed.

• C. The force of attraction between particles in gases is very high.

• D. Gases are not matter.

Multiple Choice

An iron nail is made up of particles. What is true about the particles?

• A. They move all over the place.

• B. The force of attraction between them is small.

• C. The spacing between them is large.

• D. They stay in place and vibrate.

Multiple Select

Select the correct answer from each drop-down menu.

When a liquid is cooled, the kinetic energy of the particles __________________ , and the matter changes its state to solid.

• decreases

• increases

• remains the same

Multiple Select

Select the correct answer from each drop-down menu.

When a liquid is cooled, the force of attraction between the particles ________________ , and the matter changes its state to solid.

• decreases

• increases

• remains the same

Multiple Select

Select the correct answer from each drop-down menu.

When a liquid is cooled, the space between the particles ______________.

, and the matter changes its state to solid.

• decreases

• increases

• remains the same

Multiple Choice

Identify the arrows that show removal of thermal energy when matter changes state.

• Arrows to the left

• Arrows to the right

Multiple Choice

Molecules have energy and _________ stop moving

• rarely
• always
• never
• sometimes

Multiple Choice

Matter changes state when...

• energy is added or removed
• energy is added
• energy is removed
• there is no energy

Multiple Choice

As molecules gain energy, they move _____ and spread apart, and vise versa.

• faster
• slower
• less
• inside

Multiple Choice

Energy(heat) is added in order to go from ...

• solid to gas
• liquid to solid
• gas to liquid
• gas to solid

Multiple Choice

Energy(heat) is removed in order to go from ....

• gas to solid
• solid to liquid
• solid to gas
• liquid to gas

Multiple Choice

Matter will change state when enough energy (heat) is added to , or removed from, the molecules. 

• true
• false

Multiple Choice

If you want to change liquid water into a gas you must:

• remove heat from the water
• apply pressure to the water
• add heat to the water
• add chemicals to the water

Multiple Choice

What happens to a substance when it changes from a liquid to a solid?

• it gains mass
• it gains energy
• it loses mass
• it loses energy

Multiple Choice

What is an example of sublimation?

• Ice cream melting

• Dry ice being added to water

• Frost forming on grass

Multiple Choice

A phase change from liquid to gas is called ...

• condensation

• evaporation

• sublimation

• deposition

Multiple Choice

When a gas forms directly into a solid, skipping the liquid phase

• deposition
• sublimation
• evaporation
• condensation

Multiple Choice

Sublimation is

• when solid turns into gas
• when gas turns into plasma
• when liquid turns into gas
• when gas turns into solid

Multiple Choice

What is the opposite of melting?

• condensation
• evaporization
• freezing
• sublimation

Multiple Choice

Which is needed for both boiling and melting to occur?

• solids
• gases
• heat
• pressure

Multiple Choice

 The process where water vapor changes from a gas to a liquid is called:

• sublimation
• precipitation
• evaporation
• condensation

Multiple Choice

Is the substance gaining or losing energy?

• Gaining

• Losing

Multiple Choice

Are the particles moving faster or slower as time goes on?

• Faster

• Slower

Multiple Choice

What state/phase is the object likely from points A to B?

• Solid

• Liquid

• Gas

• Plasma

Multiple Choice

What is happening to the particles in the substance between points A and B?

• Melting

• Freezing

• Speeding Up

• Slowing Down

Multiple Choice

What is happening to the particles in the substance between points D and E?

• Melting

• Freezing

• Vaporizing

• Sublimating

Multiple Choice

Is the substance gaining or losing energy?

• Gaining

• Losing

Multiple Select

Where on the graph are phase changes taking place?

• 1

• 2

• 3

• 4

• 5

Multiple Choice

The chemical formula for sulfuric acid is H₂SO₄.

In 2H₂SO₄, the number of sulfur atoms is ___?

• 1

• 2

• 4

• 8

Multiple Choice

The chemical formula for sulfuric acid is H₂SO₄.

In 2H₂SO₄, the number of oxygen atoms is _____?

• 1

• 2

• 4

• 8

Multiple Choice

When sodium reacts with chlorine, sodium chloride is produced.

Andrew represented this reaction with this equation:

Na + Cl₂ → 2NaCl

The equation is _____________.

• balanced

• not balanced

Multiple Choice

When sodium reacts with chlorine, sodium chloride is produced. Andrew represented this reaction with this equation:

__Na + __Cl₂ →__NaCl

Which set balances the equation?

• 1,1,1

• 1,2,1

• 1,1,2

• 2,1,2

Multiple Choice

When butane burns in oxygen, it produces carbon dioxide and water. This reaction is represented in this equation:

2C₄H₁₀ + 13O₂ → 8CO₂ + 10H₂O

How many atoms of carbon (C) on each side of the equation?

• 2

• 4

• 6

• 8

Multiple Choice

When butane burns in oxygen, it produces carbon dioxide and water. This reaction is represented in this equation:

2C₄H₁₀ + 13O₂ → 8CO₂ + 10H₂O

How many atoms of oxygen (O) on each side of the equation?

• 2

• 13

• 15

• 26

Multiple Choice

When butane burns in oxygen, it produces carbon dioxide and water. This reaction is represented in this equation:

2C₄H₁₀ + 13O₂ → 8CO₂ + 10H₂O

How many atoms of hydrogen (H) on each side of the equation?

• 10

• 12

• 20

• 26

Multiple Choice

Iron reacts with oxygen to produce iron oxide (rust). This reaction is represented in an equation as 4Fe + xO₂ → 2Fe₂O₃.

Identify the value of x that will balance the equation.

• 1

• 2

• 3

• 4

Multiple Choice

The chemical formula for artificial sweetener is C₇H₅NO₃S.

Match the elements with the numbers found in one molecule of artificial sweetener.

carbon

• 1

• 3

• 5

• 7

• No Answer

Multiple Choice

The chemical formula for artificial sweetener is C₇H₅NO₃S.

Match the elements with the numbers found in one molecule of artificial sweetener.

hydrogen

• 1

• 3

• 5

• 7

• No Answer

Multiple Choice

The chemical formula for artificial sweetener is C₇H₅NO₃S.

Match the elements with the numbers found in one molecule of artificial sweetener.

sulfur

• 1

• 3

• 5

• 7

• No Answer

Multiple Choice

The chemical formula for artificial sweetener is C₇H₅NO₃S.

Match the elements with the numbers found in one molecule of artificial sweetener.

Oxygen

• 1

• 3

• 5

• 7

• No Answer

Multiple Select

Which chemical equations are being balanced ?

• CaO + 3C → CaC₂ + CO

• Na + H₂O → 2NaOH + H₂

• 4Fe + O₂ → 2Fe₂O₃

• 2Mg + O₂ → 2MgO

Multiple Choice

Calcium carbonate is a compound that is used to make chalk for drawing on rocks or pavement. One molecule has one atom of calcium (Ca), one atom of carbon (C), and three atoms of oxygen (O). Which is the correct way to write the chemical formula for calcium carbonate?

• 3CaCO

• Ca₃CO

• CaCO₃

• Ca₃C₃O₃

Multiple Choice

The picture represents sulfur trioxide.

Which statement is true for one molecule of sulfur trioxide?

• There are three atoms of sulfur and one atom of oxygen.

• There are three atoms of sulfur and three atoms of oxygen.

• There is one atom of sulfur and one atom of oxygen.

• There is one atom of sulfur and three atoms of oxygen.

Multiple Choice

If blue represents one atom of nitrogen, and   red represents one atom of oxygen, which picture represents 2NO₂?

Multiple Choice

Sodium bicarbonate is the chemical name for baking soda. Its chemical formula is NaHCO₃. What does the subscript 3 mean?

• There are three molecules of sodium bicarbonate.

• There are three molecules of oxygen in sodium bicarbonate.

• There are three atoms of oxygen in sodium bicarbonate.

• There are three atoms of sodium bicarbonate.

Multiple Choice

The chemical formula for sulfuric acid is H₂SO₄.

In 2H₂SO₄, the number of hydrogen atoms is_____?

• 1

• 2

• 4

• 8