Physical and Chemical Changes

When liquids change to solids, we say that they have _______.

• frozen

• evaporated

• melted

• boiled

Tags

NGSS.MS-PS1-4

When liquids change to gases, we say that they have _______ or _______.

• boiled, evaporated

• frozen, solidified

• condensed, liquefied

• melted, sublimated

Tags

NGSS.MS-PS1-4

Define physical change.

• A physical change is a change in which the substance's physical properties remain the same.

• A physical change is a change in which the substance's chemical composition is altered.

• A physical change is a change in which the substance's physical properties are altered, and its chemical composition remains the same.

• A physical change is a change in which the substance's physical properties, such as shape, size, or state of matter, are altered, but its chemical composition remains the same.

Tags

112.25.

Which of the following is a physical property? 

• rusting 
• boiling 
• rotting 
• burning 

A mixture can be physically separated?

• True

• False

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

• Ability to oxidize

• Reactivity with a base.

• Dissolving salt in water.

• Ability to burn in oxygen

Tags

NGSS.MS-PS1-2

In a physical change -

• The reactants combine to change to something new

• The law of the conservation of mass is broken

• Gases are produced through an exothermic reaction

• A change happens but the item remains the same

Tags

NGSS.MS-PS1-4

A ​ (a)   is a change in which no new substances form.

• Physical Change
• Volume
• Investigation
• Mass
• Matter

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

I slice a log into pieces.

This is a physical change because ___.

• I changed the size.

• I changed the state.

• I made a new substance.

Is burning wood a chemical or physical change?

• chemical
• physical

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5