Chemical and Physical Changes Assessment

What is a physical change?

• A change where the identity of the material does not change

• A change where the identity of the material changes

• A change that always involves a color change

• A change that always involves a temperature change

Tags

NGSS.MS-PS1-4

Which of the following is true about a chemical change?

• It always involves a change in temperature

• The identity of the material remains the same

• The identity of the material changes

• It always involves a change in color

Tags

NGSS.MS-PS1-2

What is an atom?

• A compound made up of different molecules

• The smallest unit of an element that retains its properties

• A molecule made up of different elements

• The largest unit of an element

Tags

NGSS.MS-PS1-1

What is a molecule?

• A single element

• A group of atoms bonded together

• A single atom

• A mixture of different compounds

Tags

NGSS.MS-PS1-1

Are all chemical changes reversible?

• Only if energy is absorbed

• Always

• Sometimes

• Never

What is the definition of a chemical change?

• A change that results in a new substance with different properties

• A change that does not alter the identity of the material

• A change that always involves a temperature increase

• A change that always involves a color change

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

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

• The total mass increases

• The total mass decreases

• The total mass remains the same

• The total mass varies depending on the reaction

Tags

NGSS.MS-PS1-5

During a chemical change, what happens to the atoms in the original molecules?

• They disappear

• They regroup into different molecules

• They remain unchanged

• They turn into energy

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Is energy always released during a chemical change?

• Always

• Sometimes

• Never

• Only in exothermic reactions

Tags

NGSS.HS-PS1-4

Is dissolving a chemical change?

• Always

• Sometimes

• Never

• Only if the solvent is water