#66 Chemical and Physical Changes and Properties

Which of the following is a chemical property?

• Color

• Boiling point

• Reactivity with vinegar

• Density

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Boiling water is an example of a:

• Chemical change

• Physical change

• Exothermic reaction

• Endothermic reaction

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

NGSS.MS-PS3-4

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

• Flammability

• Melting point

• Ability to rust

• Reactivity with acid

Tags

NGSS.MS-PS1-4

Burning wood is an example of a:

• Chemical change

• Physical change

• Exothermic reaction

• Endothermic reaction

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

In an exothermic reaction, energy is:

• Absorbed from the surroundings

• Released into the surroundings

• Neither absorbed nor released

• Used to break bonds only

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

NGSS.MS-PS1-5

NGSS.MS-PS3-3

Which of the following is an example of an endothermic reaction?

• Combustion of gasoline

• Ice melting

• Explosion of fireworks

• Burning of coal

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

The substances that are present before a chemical reaction takes place are known as:

• Catalysts

• Products

• Reactants

• Enzymes

Tags

NGSS.MS-PS1-2

Dissolving sugar in water is an example of a:

• Chemical change

• Physical change

• Exothermic reaction

• Endothermic reaction

Which of the following is a chemical change?

• Freezing water

• Dissolving salt in water

• Rusting of iron

• Cutting paper

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

An exothermic reaction is characterized by:

• A decrease in temperature

• An increase in temperature

• No change in temperature

• Initial cooling followed by heating

Tags

NGSS.MS-PS3-4