chemical and physical changes

Chemical change

• Two or more molecules are mixed together

• Two or more molecules interact forming new molecules

• change to size or shape

• Change in color

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

When two or more substances join and react the new material has?

• new chemical properties

• change in mass

• change in smell

• No new properties

Tags

NGSS.MS-PS1-2

Digestion

• physical

• chemical

Tags

NGSS.MS-LS1-7

soured milk

• chemical

• physical

Tags

NGSS.MS-PS1-2

cutting up fruit

• physical

• chemical

Tags

NGSS.MS-LS1-7

rust

• physical

• chemical

Tags

NGSS.MS-PS1-2

Evidence of chemical change

• color change

• precipitate forms

• bubbles

• change in shape

Tags

NGSS.MS-PS1-2

Evidence of a physical change

• burning

• fizzing

• change in state of matter

Tags

NGSS.MS-PS1-4

sign of chemical change

• unexpected temperature change

• shape change

• texture change

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

Select all the physical changes

• purposely changing the temperature

• changing the shape

• changing the color

• forming a precipitate