Exploring Physical and Chemical Changes

The video tutorial explains the differences between physical and chemical changes in matter. Physical changes involve alterations in size, shape, or form without changing the substance itself, such as cutting paper or melting wax. Chemical changes result in the formation of new substances, like cooking pancakes or rusting metal, and are irreversible. The video provides examples of both types of changes, highlighting their properties and effects.

What remains unchanged when paper is cut?

• Color

• Material

• Size

• Shape

What happens to water when it is frozen?

• Dissolves

• Remains liquid

• Becomes solid

• Turns to gas

Tags

NGSS.MS-PS1-4

Can a physical change be easily reversed?

• No, never

• Sometimes

• Yes, always

• Not applicable

What is true about the water cycle in terms of physical changes?

• Water changes states

• Water is destroyed

• Water becomes a solid only

• Water disappears

Tags

NGSS.MS-ESS2-4

NGSS.MS-PS1-4

What type of change does a towel undergo when it gets wet?

• Chemical

• Biological

• Permanent

• Physical

What happens to pancakes after cooking?

• They undergo a chemical change

• They disappear

• They can be reverted to batter

• They undergo a physical change

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

NGSS.MS-PS1-5

What is a key characteristic of a chemical change?

• Physical properties remain

• Reversible

• Irreversible

• No new substances formed

What happens to an apple when it turns brown?

• Physical change

• Chemical change

• No change

• All of the above

Tags

NGSS.MS-PS1-2

What does rusting of metal signify?

• No change

• State change

• Physical change

• Chemical change

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

What does not change when clay is heated?

• Color

• Texture

• Chemical composition

• Shape

Tags

NGSS.MS-PS1-5