Exploring Matter, Chemical/Physical Changes and Heat Transfer

Which of the following best describes the Law of Conservation of Mass?

• Mass can be created and destroyed.

• Mass is neither created nor destroyed in a chemical reaction.

• Mass is always increasing in a closed system.

• Mass is always decreasing in a closed system.

Tags

NGSS.MS-PS1-5

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

• Burning wood

• Melting ice

• Rusting iron

• Baking a cake

Tags

NGSS.MS-PS1-4

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

• Freezing water

• Dissolving sugar in water

• Cooking an egg

• Cutting paper

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

What type of heat transfer occurs when you feel the warmth of the sun on your skin?

• Conduction

• Convection

• Radiation

• Insulation

Which process is an example of conduction?

• Boiling water

• A metal spoon getting hot in a pot of soup

• Warm air rising to the ceiling

• Sunlight warming the ground

Tags

NGSS.MS-PS3-3

Which type of heat transfer is responsible for the circulation of air in the atmosphere?

• Conduction

• Convection

• Radiation

• Insulation

Tags

NGSS.MS-ESS2-6

Which of the following is an example of radiation?

• Heat from a fireplace warming a room

• Heat from a stove warming a pot

• Heat from the sun warming your face

• Heat from a heater warming the air

What is the main difference between a physical and a chemical change?

• Physical changes are reversible, chemical changes are not.

• Chemical changes involve a change in state, physical changes do not.

• Physical changes create new substances, chemical changes do not.

• Chemical changes are always visible, physical changes are not.

Tags

NGSS.MS-PS1-1

Which type of heat transfer occurs when warm air rises and cool air sinks?

• Conduction

• Convection

• Radiation

• Insulation

Tags

NGSS.MS-ESS2-6

What happens to the total mass of reactants and products in a chemical reaction?

• The total mass increases.

• The total mass decreases.

• The total mass remains constant.

• The total mass doubles.

Tags

NGSS.MS-PS1-5