3.2 Changes of Matter

Can be reversed & NO new substance formed

• physical change

• chemical change

Tags

NGSS.MS-PS1-2

A new substance is formed & is irreversible or not easy reversed

• physical change

• chemical change

Tags

NGSS.MS-PS1-2

melting ice cream

• physical change

• chemical change

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Cooking Eggs

• chemical change

• physical change

Tags

NGSS.MS-LS1-7

NGSS.MS-PS1-2

NGSS.MS-PS1-4

If I heat a substance and it burns it is a .....

• chemical change

• physical change

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

You put 3 ice cubes in a sealed bag and record the mass of the ice in the bag. You wait for the ice to melt. What would you discover?

• The mass of the water in the bag will be less than the mass of the ice in the bag.

• The mass of the water in the bag will be more than the mass of the ice in the bag.

• The mass of the water in the bag will be the same as the mass of the ice in the bag

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

If I have a cookie that is 30 grams. If I crush it up the mass of the crumbs would be?

• The mass would be the same

• The mass would be less

• The mass would be greater

Tags

NGSS.MS-PS1-2

If I burned a piece of paper into ashes which statement would be true?

• The mass would be less than the mass of the paper because it burned

• mass of the ashes would be equal to the mass of the paper before the chemical change

• The volume would be less than the volume of the paper before the chemical change

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

As I increase temperature, the reaction rate will...

• increase (be faster)

• decrease (be slower)

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Sample A is 30 degrees Celsius and Sample B is 100 degree Celsius. If I were to drop a skittle in each, which would have an increased reaction?

• Sample A because the temperature is lower than B

• Sample A because the temperature is greater than B

• Sample B because the temperature is greater than A

• Sample B because the temperature is lower than A

Tags

NGSS.MS-PS1-4