During a chemical interaction

a new substance with different properties may appear

a new substance in a different phase may appear (at room temperature)

Which of the following are neutral substances?

water, apple juice, baking soda.

carbon dioxide reacts with water to produce carbonic acid.

reactant(s): carbon dioxide and water; product(s): carbonic acid.

reactant(s): carbon dioxide; product(s): water and carbonic acid.

reactant(s): carbon and carbonic acid; product(s): water.

reactant(s): carbonic acid; product(s): water and carbon dioxide.

When methane is burned it interacts with oxygen to form carbon dioxide and water vapor. Which of the following is the word chemical equation for this reaction?

methane + oxygen => carbon dioxide + water.

methane + carbon dioxide => water + oxygen.

dioxide + carbon => methane oxygen + water.

oxygen + carbon dioxide => methane + water

During a chemical interaction the mass of the reactants...

always equals the mass of the products.

may be greater than the mass of the products.

may be less than the mass of the products.

has nothing to do with the mass of the products.

Which of the following is an example of a chemical reaction?

A white solid forming when two clear liquids are poured together

Water evaporating from a pot on a hot stove

Sand being removed from sea water by filtration

A spoonful of sugar dissolving in a glass of water

Which of the following always results from a chemical reaction?

A new substance that can be a solid, liquid, or gas

A new substance that is a solid

Which of the following is an example of a chemical reaction?

A marshmallow turning black when heated over a fire

A powder dissolving in water to make lemonade

An ice cube melting into a puddle of water

Salt crystals being crushed into a powder

Which of the following is an example of a physical change?

Melted butter becoming a solid when placed in the refrigerator

The surface of a copper penny changing color after being in a drawer for years

A car rusting when exposed to the air and rain

the study of matter and how matter changes.

a characteristic of a substance that can be observed without changing the substance into another substance.

anything that has mass and takes up space.

a rapid reaction between oxygen and a substance called a fuel.

Which of the following is NOT a correct inference that you can make about the burning of gasoline?

The reaction is a physical change.

Chemical bonds are broken and others are formed.

The only sure evidence for a chemical reaction is

the production of one or more new substances.

In chemical reactions, what does the principle of conservation of mass mean?

Matter is not created or destroyed

The total mass of the reactants is greater than the total mass of the products.

The total mass of the reactants is less than the total mass of the products.

The principle of conservation of mass is true

for reactions in both open and closed systems.

only for reactions that take place in open systems.

only for reactions that take place in closed systems.

A physical change can best be demonstrated by

leaving the index card unchanged

When heated, oxygen reacts with copper to form copper oxide: If this reaction occurs in a sealed container, will the mass of the container and everything in it increase, decrease, or stay the same and why?

The mass will stay the same because the number of each kind of atom stays the same.

The mass will decrease because two substances combine to form one substance.

The mass will increase because a new kind of molecule is formed.

More information is needed to tell if the mass will change.

What type of reaction is occurring in the diagram? Which response below explains the reason for that type of reaction?

Exothermic. Heat is released when the candle (wax) burns.

Endothermic. Heat is released when the candle (wax) burns.

Endothermic. Heat is taken in when the candle (wax) burns.

Exothermic. Heat is taken in when the candle (wax) burns.

When the candle was lit, a pool of liquid wax formed in the area around the wick, and then spilled over the side and resolidified. Does this observation refer to a physical change or a chemical change? Explain.

A physical change. The substance was still wax, but it changed to a liquid and then back to a solid.

A chemical change. The substance was still wax, but it changed to a liquid and then back to a solid.

A chemical change. The substance changed from a chemical liquid to solid wax.

A physical change. The substance was still wax, but it changed to a solid and then back to a liquid.

The flame from the candle gives off black smoke. Does this statement describe evidence for a physical change or a chemical change? Explain.

A chemical change. The black smoke is evidence of the formation of a new substance, which means a chemical change occurred.

A chemical change. The black smoke is evidence that a new substance is not forming which means a chemical change occurred.

A physical change. The black smoke is evidence of the formation of a new substance, which means a chemical change occurred.

A physical change. The black smoke is evidence of a solid turning into a gas

the branch of science that deals with the identification of the substances of which matter is composed; the investigation of their properties and the ways in which they interact, combine, and change; and the use of these processes to form new substances.

the branch of science concerned with the chemical and physicochemical processes and substances that occur within living organisms.

the branch of science concerned with the nature and properties of matter and energy. The subject matter of physics, distinguished from that of chemistry and biology, includes mechanics, heat, light and other radiation, sound, electricity, magnetism, and the structure of atoms.

is the study of macroscopic, atomic, subatomic, and particulate phenomena in chemical systems in terms of the principles, practices, and concepts of physics such as motion, energy, force, time, thermodynamics, quantum chemistry , statistical mechanics, analytical dynamics and chemical equilibrium.

Angelina mixes 2 substances together in a beaker. The beaker becomes hot and the liquid changes color. Did a chemical reaction occur?

yes, because the properties changed and a new substance was made.

yes, because the properties changed, but the substance is the same

no, because the properties did not change.

no, because the properties did not change and a new substance was made.

Your mother wants to mix two substances together and to find out if a chemical reaction happens. What should he do?

test the solubility before and after mixing

measure the mass before and after mixing

measure the volume before and after mixing

test the density of the before substance but not the after substances.

Your mom mixes apple juice, water, and cinnamon together. She wants to know if a chemical reaction occurred?

no, because the properties stayed the same.

yes, because dissolving is always a chemical reaction.

Yes, because the apple juice changed the color of the water.

no, because the temperature stayed the same

number of protons/stands for an element

number of protons and electrons

reactants and products Quiz

50 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Any substance that results from a chemical reaction is called a______________

producer

production

product

productor

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Any substance that starts a chemical reaction is called a

reactant

reaction

reactor

retart

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A chemical reaction can be mathematically represented by showing the required amount of products and resulting reaction components using a chemical _____.

equation

connection

probation

chemical

Tags

NGSS.HS-PS1-7

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Products of a combustion reaction include

water

fire

air

earth

Tags

NGSS.MS-PS1-5

NGSS.MS-PS1-1

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

when a chemical reaction occurs, bonds in the _____ break and new bonds in the _ form these changes involve ____.

products, reactants, Shamus

reactants, products, energy

products, reactants, energy

reactants, products, my heart

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Identify the reactants and products in the following chemical reaction: CH4 + 2O2 → CO2 + 2H2O.

The reactants are CO2 and 2O2. The products are CH4 and 2H2O.

The reactants are CH4 and 2H2O. The products are CO2 and 2O2.

The reactants are CH4 and 2O2. The products are CO2 and 2H2O.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-1

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The reactants and products contain the same atoms, but they are rearranged during the reaction.

True

False

There's no point in life

There's no such thing love

Tags

NGSS.MS-PS1-5

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reactants and products

Any substance that results from a chemical reaction is called a______________

Any substance that starts a chemical reaction is called a

A chemical reaction can be mathematically represented by showing the required amount of products and resulting reaction components using a chemical _____.

Products of a combustion reaction include

when a chemical reaction occurs, bonds in the _____ break and new bonds in the _ form these changes involve ____.

Identify the reactants and products in the following chemical reaction: CH4 + 2O2 → CO2 + 2H2O.

The reactants and products contain the same atoms, but they are rearranged during the reaction.

An example of a chemical change is a candle burning.

Chemical changes occur because of chemical reactions.

Which of the following is a chemical property of a substance?

Access all questions and much more by creating a free account

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reactants and products

Any substance that results from a chemical reaction is called a______________

Any substance that starts a chemical reaction is called a

A chemical reaction can be mathematically represented by showing the required amount of products and resulting reaction components using a chemical _____.

Products of a combustion reaction include

when a chemical reaction occurs, bonds in the _________ break and new bonds in the _________ form these changes involve ________.

Identify the reactants and products in the following chemical reaction: CH4 + 2O2 → CO2 + 2H2O.

The reactants and products contain the same atoms, but they are rearranged during the reaction.

An example of a chemical change is a candle burning.

Chemical changes occur because of chemical reactions.

Which of the following is a chemical property of a substance?

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when a chemical reaction occurs, bonds in the _____ break and new bonds in the _ form these changes involve ____.