Understanding Chemical Reactions

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

• Reactivity with acid

• Density

• Ability to rust

• Combustibility

What is the term used to describe the temperature at which a solid turns into a liquid?

• Boiling point

• Freezing point

• Melting point

• Sublimation point

Tags

NGSS.MS-PS1-4

Which of the following changes indicates a chemical reaction has occurred?

• Change in state from solid to liquid

• Change in color

• Change in size

• Change in shape

Tags

NGSS.MS-PS1-2

What is the term for the ability of a substance to dissolve in water?

• Density

• Solubility

• Flammability

• Reactivity

Which property is most likely to change during a chemical reaction?

• Mass

• Volume

• Chemical composition

• Shape

Tags

NGSS.MS-PS1-2

What is the boiling point of water at standard atmospheric pressure?

Tags

NGSS.MS-PS1-4

Which of the following is NOT a sign of a chemical reaction?

• Formation of a gas

• Change in temperature

• Melting of ice

• Formation of a precipitate

Tags

NGSS.MS-PS1-2

If a substance is flammable, what does it mean?

• It can dissolve in water

• It can catch fire easily

• It has a strong odor

• It is very dense

Which property would you measure to determine if a substance will float in water?

• Solubility

• Density

• Flammability

• Odor

What happens to the density of a substance if its mass remains constant but its volume increases?

• Density increases

• Density decreases

• Density remains the same

• Density becomes zero