Chemical Reaction Properties

A chemical change may involve

• Evolution of gas

• Change in color

• Change in temperature

• All of the above

Tags

NGSS.MS-PS1-2

Silver tarnishes is:

• Physical change

• Chemical change

• Physical property

• Chemical property

Tags

NGSS.MS-PS1-2

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

• Formation of a solid

• Heat exchange

• liberation of gas

• change in state

Tags

NGSS.MS-PS1-2

Which is a statement of the law of conservation of mass?

• Mass can be created or destroyed.

• The total mass of before the reaction is the same as the total mass after the reaction.

• Every reaction creates an equal amount of mass related to the amount of energy required for the reaction.

• The total amount of mass is equal to the volume of both chemicals in the reaction.

Tags

NGSS.MS-PS1-5

A Chemical Change is also known as what?

• Physical Change

• Physical Property

• Chemical Reaction

• Chemical Property

Is milk going sour a physical or chemical change?

• Physical 

• Chemical

Tags

NGSS.MS-PS1-2

Oxygen and iron combine chemically to form rust. Rust is classified as which of the following?

• an atom.

• an element.

• a compound.

• a mixture.

Tags

NGSS.MS-PS1-1

Is mold growing on cheese a physical or chemical change?

• Physical 

• Chemical

Tags

NGSS.MS-PS1-2

Borax is what scientists call a “__________________" agent.

• cross-linking

• gas

• liquid

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

• bending a pop can

• boiling milk

• melting wax

• burning paper

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5