Matter changes form but not chemical identity

• physical change

• property

• catalyst

• translucent

Tags

NGSS.MS-PS1-4

A chemical change is when matter changes chemically and a __________ substance is formed.

Tags

NGSS.MS-PS1-2

A property of hydrogen gas is that it is

• lightweight

• flammable

• invisible

• dark gray

A substance that makes a reaction faster by lowering the activation energy is

• reactant

• product

• catalyst

• activation energy

Tags

NGSS.HS-PS1-4

A ______________ is the substance that starts a chemical reaction

Tags

NGSS.MS-PS1-5

Activation energy is

• the energy at the end of a reaction

• the minimum amount of energy to start a reaction

• a catalyst

• the energy given off during a reaction

Tags

NGSS.MS-PS1-4

Sugar dissolves in water

• Chemical Change
• Physical Change

Indicate whether the photo depicts a physical change or chemical change.

• Physical change

• Chemical change

Tags

NGSS.MS-PS1-4

Is this an example of a physical or chemical change?

• physical

• chemical

Tags

NGSS.MS-PS1-2

Select all of the following images that show a physical change:

• 
• 
• 
• 
•