Science 14 Review (Alberta)

Multiple Choice

Which of the following is a common household chemical that can be hazardous if not stored or disposed of properly?

• Ammonia

• Table salt

• Sugar

• Baking soda

Open Ended

Why is it important to properly store and dispose of chemicals, both in households and laboratories?

Multiple Choice

Which of the following is NOT a recommended chemical storage precaution?

• Store chemicals out of reach of children.

• Store incompatible chemicals together.

• Store away from heat sources.

• Store flammables outside living areas.

Match

Match the following

health hazard

flammable

oxidizing

poisonous

corrosive

• health hazard

• flammable

• oxidizing

• poisonous

• corrosive

Fill in the Blank

Particles in a _____ are closely packed in fixed positions and only vibrate.

Multiple Choice

What change of state occurs when a solid turns directly into a gas?

• Melting

• Condensation

• Sublimation

• Evaporation

Multiple Choice

Which of the following is a property of metals?

• Usually dull and brittle

• Good conductors of heat and electricity

• Poor conductors of electricity

• Exhibit properties of both metals and non-metals

Multiple Choice

Which of the following statements best describes the difference between metals, nonmetals, and metalloids as shown in the periodic table?

• Metals are found on the left and center, nonmetals on the right, and metalloids form a zigzag line between them.

• Metals are only found in the last column, nonmetals in the first, and metalloids in the middle.

• Metals and nonmetals are mixed together throughout the table, with metalloids at the bottom.

• Metalloids are found only in the first row, while metals and nonmetals are in the last row.

Open Ended

What does the 2 mean in CO2?

Multiple Select

Which of the following are true about decomposition reactions?

• A compound is broken down into simpler substances or elements.

• The general form is AB→A+B.

• Electrolysis of water is an example of a decomposition reaction.

• Decomposition reactions combine two elements to form a compound.

Open Ended

What is the difference between a solute and a solvent in a solution?

Multiple Choice

Which of the following factors does not increase the solubility of a solid in a liquid?

• Increasing temperature

• Stirring the solution

• Increasing the amount of solvent

• Increasing the amount of solute

Multiple Choice

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

• Melting ice

• Shredding paper

• Burning wood

• Mixing candies

Multiple Select

Which of the following are indicators of a chemical reaction?

• Change in color

• Production of gas (bubbles)

• Melting of ice

• Formation of a precipitate (solid)

Multiple Choice

An unknown solution was tested with litmus paper. Red litmus turns blue, and blue litmus stays blue. Is the substance an acid or a base?

• Acid

• Base

• Neutral

• Salt

Fill in the Blank

A solution with a pH of 7 is considered ___.

Multiple Choice

Classify household bleach with a pH of 12.4 as an acid, base, or neutral.

• Acid

• Base

• Neutral

• Salt

Multiple Choice

What does the subscript '2' in H₂O represent?

• Number of oxygen atoms

• Number of hydrogen atoms

• Number of molecules

• Number of electrons

Multiple Choice

What is Brownian Motion? How is it affected by temperature?

• Random motion of particles, increases with temperature

• Linear motion of particles, decreases with temperature

• Circular motion of particles, unaffected by temperature

• Vibrational motion of particles, decreases with temperature

Multiple Choice

The difference between heat and temperature is that heat is energy transfer, while temperature is a measure of energy.

• True

• False

Multiple Choice

Which direction does heat flow?

• Heat flows from hot to cold

• Heat flows from cold to hot

• Heat does not flow

• Heat flows in both directions equally

Multiple Choice

Which of the following beakers would need a greater amount of heat to raise its temperature 10°C?

• 500 mL of water

• 500 mL of sand

• 500 mL of oil

• 500 mL of air

Multiple Choice

A hot object is in contact with a cooler object. Does thermal energy flow from the hot object to the cooler object?

• Yes, thermal energy flows from hot to cool

• No, thermal energy flows from cool to hot

• Yes, but only if the objects are the same material

• No, thermal energy does not flow between objects

Match

Match the definition of heat transfer with the term.

• Conduction,

• Convection

• Radiation

Transfer of heat through direct contact

Transfer of heat through the movement of fluids

Transfer of heat through electromagnetic waves

• Transfer of heat through direct contact

• Transfer of heat through the movement of fluids

• Transfer of heat through electromagnetic waves

Multiple Select

Which of the following statements about heat transfer are correct?

• Conduction occurs primarily in solids through direct contact.

• Convection involves the movement of fluids such as liquids and gases.

• Radiation requires a medium to transfer heat.

• Heat naturally flows from cooler to warmer objects.

Multiple Choice

Which of the following would make a better cooling agent?

• Water (SHC = 4.19)

• Motor oil (SHC = 2.00)

• Sand (SHC = 0.80)

• Iron (SHC = 0.45)

Multiple Choice

The purpose of an insulator is to:

• Conduct electricity

• Prevent heat transfer

• Increase heat transfer

• Emit light

Multiple Choice

What is R-value? What is better for insulation, a low or high R-value?

• A measure of thermal resistance; high R-value

• A measure of electrical resistance; low R-value

• A measure of sound resistance; high R-value

• A measure of light absorption; low R-value

Multiple Choice

On a hot day, which place would be cooler?

• A beach beside a large lake

• 20 km away from the lake

• A desert area

• A city center

Multiple Choice

A sea breeze is produced when:

• Cool air moves from sea to land, warm air rises over land

• Warm air moves from sea to land, cool air rises over land

• Cool air moves from land to sea, warm air rises over sea

• Warm air moves from land to sea, cool air rises over sea

Multiple Choice

A land breeze is produced when:

• Cool air moves from land to sea, warm air rises over sea

• Warm air moves from land to sea, cool air rises over sea

• Cool air moves from sea to land, warm air rises over land

• Warm air moves from sea to land, cool air rises over land

Multiple Choice

How do you know when work is being done?

• There is a force applied and a distance travelled in the same direction

• There is distance travelled

• Force is applied

• You sweat

Multiple Choice

What are the two components of work?

• Force and distance

• Speed and time

• Mass and volume

• Energy and power

Multiple Choice

What unit is work measured in?

• Joules

• Watts

• Newtons

• Volts

Multiple Choice

List three inclined planes that make work easier for you.

• Ramp, wedge, screw

• Lever, pulley, wheel

• Spring, gear, axle

• Beam, column, arch

Multiple Choice

Why are levers sometimes referred to as distance multipliers?

• Levers can only move loads in a straight line without any distance amplification.
• Levers are used to reduce the amount of effort needed to lift a load.
• Levers are referred to as distance multipliers because they can amplify the distance moved by an effort compared to the distance moved by the load.
• Levers are primarily used for cutting materials rather than lifting them.

Labelling

Label the fulcrum, effort and load on the first class lever.

Drag labels to their correct position on the image

Fulcrum

Effort

Load

Labelling

Label the effort, load and fulcrum on the second class lever.

Drag labels to their correct position on the image

load

effort

fulcrum

Labelling

Label the load, effort and fulcrum on the third class lever.

Drag labels to their correct position on the image

fulcrum

load

effort

Multiple Choice

List three ways a home may become more energy efficient by limiting energy transfer.

• Insulation, double glazing, solar panels

• Painting, carpeting, new furniture

• Larger windows, open doors, more lighting

• Wooden floors, single glazing, electric heating

Multiple Choice

What are the three parts of cell theory?

• Cells are the basic unit of life, all living things are made of cells, cells arise from pre-existing cells

• Cells are the basic unit of life, cells are made of atoms, cells can be created from non-living matter

• Cells are the basic unit of life, all living things are made of atoms, cells arise from pre-existing cells

• Cells are the basic unit of life, cells are made of molecules, cells can be created from non-living matter

Labelling

Label the parts of the microsop

Drag labels to their correct position on the image

revolving nosepiece

fine adjustment know

objective lens

coarse adjustment knob

ocular lens

stage

light source

Labelling

Label the parts of the animal cell

Drag labels to their correct position on the image

golgi apparatus

Lysosome

mitochrondia

Endoplasmic reticulum

nucleous

cytoplasm

Multiple Choice

What is the difference between a plant cell and an animal cell?

• Plant cells have a cell wall, animal cells do not.

• Animal cells have chloroplasts, plant cells do not.

• Plant cells have a nucleus, animal cells do not.

• Animal cells have a cell wall, plant cells do not.

Multiple Choice

What is the function of each cell organelle?

• Nucleus - Packages proteins

• Mitochondria - Controls cell activities

• Ribosome - Synthesizes proteins

• Chloroplast - Holds food, water, and waste

Multiple Choice

Which part of the digestive process involves the esophagus?

• Grinding up food

• Absorbing nutrients

• Pushing food to the stomach

• Excreting undigested food

Multiple Choice

What is the difference between chemical and physical digestion?

• Chemical digestion involves enzymes, while physical digestion involves chewing.

• Physical digestion uses acids, while chemical digestion uses teeth.

• Chemical digestion occurs in the mouth, while physical digestion occurs in the stomach.

• Physical digestion is faster than chemical digestion.

Multiple Choice

What is the main job of the circulatory system?

• To digest food

• To transport nutrients and oxygen

• To break down waste

• To produce energy

Multiple Choice

How do the digestive and circulatory systems work together?

• They both produce energy for the body.

• The digestive system breaks down food, and the circulatory system transports nutrients.

• They both remove waste from the body.

• The circulatory system digests food, and the digestive system transports nutrients.

Multiple Choice

What is malnutrition?

• Excessive intake of vitamins

• Lack of proper nutrition

• Eating too much protein

• Drinking too much water

Multiple Choice

What type of food is the primary source of energy in the body?

• Carbohydrates

• Protein

• Fat

• Vitamins

Multiple Choice

What are the six essential nutrients?

• Carbohydrates, Proteins, Fats, Water, Vitamins, Minerals

• Sugars, Starches, Fibers, Water, Enzymes, Hormones

• Proteins, Fats, Sugars, Water, Minerals, Enzymes

• Carbohydrates, Fats, Proteins, Water, Hormones, Vitamins

Multiple Choice

Can energy be created or destroyed? Why or why not?

• Yes, energy can be created and destroyed.

• No, energy cannot be created or destroyed; it can only change forms.

• Yes, energy can be created but not destroyed.

• No, energy can be destroyed but not created.

Multiple Choice

What is the difference between biotic and abiotic factors?

• Biotic factors are non-living, while abiotic factors are living.

• Biotic factors are living, while abiotic factors are non-living.

• Biotic factors are chemical, while abiotic factors are physical.

• Biotic factors are physical, while abiotic factors are chemical.

Multiple Choice

Which trophic level contains the most energy?

• Producer

• Primary consumer

• Secondary consumer

• Tertiary consumer

Multiple Choice

What is an example of a decomposer?

• Lion

• Mushroom

• Eagle

• Shark

Multiple Choice

Which of the following is a primary consumer?

• Grass

• Rabbit

• Hawk

• Snake

Multiple Choice

What is the difference between a food chain and a food web?

• A food chain shows one path of energy flow, while a food web shows multiple paths.

• A food chain is a complex network, while a food web is a simple linear sequence.

• A food chain includes only producers, while a food web includes only consumers.

• A food chain is found in water, while a food web is found on land.

Multiple Choice

The maximum number of individuals an ecosystem can support is known as its carrying capacity. Why do populations rarely exceed the carrying capacity of their ecosystem?

• Due to unlimited resources

• Due to limited resources and competition

• Due to lack of predators

• Due to constant climate conditions

Open Ended

After learning about chemical storage and disposal, what is one question you still have or something you would like to know more about regarding chemical safety?