Notes-Physical and Chemical Changes

What is the act of altering a substance called?

• Trait

• Change

• Condition

• Event

Tags

NGSS.MS-PS1-4

Which of the following is NOT a characteristic of "change"?

• It is an event

• It is a trait

• It involves a before and after condition

• It can be physical or chemical

Tags

NGSS.MS-PS1-5

What are the two types of change mentioned?

• Physical and Biological

• Chemical and Biological

• Physical and Chemical

• Biological and Environmental

Tags

NGSS.MS-LS2-4

What is a characteristic of a physical change?

• It changes the identity of the substance.

• New substances are formed.

• It is always irreversible.

• It occurs without changing the identity of the substance.

What happens to new substances during a physical change?

• New substances are always formed.

• No new substances are formed.

• New substances are sometimes formed.

• New substances are always formed and are reversible.

Tags

NGSS.MS-PS1-4

How often is a physical change reversible?

• Always

• Never

• Sometimes

• Rarely

What does a physical change alter in a substance?

• Chemical composition

• Identity of the substance

• Form or appearance

• Atomic structure

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

• Rusting of iron

• Burning of wood

• Melting of ice

• Baking a cake

Which of the following is an example of a change in shape?

• Melting ice cream

• Painting a wall

• Crushed soda can

• Mixing salt and sand

What is an example of a change in state?

• Crushed soda can

• Melting ice cream

• Sanding wood

• Painting a wall

Tags

NGSS.MS-PS1-4