Physical and Chemical Changes States of Matter

A s'more is a dessert made by placing a piece of chocolate and a toasted marshmallow between 2 graham crackers. The warmth of the marshmallow causes the chocolate to melt. What change occurs to the chocolate when it melts - physical or chemical change?

• physical because it changes states but it is still chocolate

• physical because it forms something new

• chemical because it changes states but it is still chocolate

• chemical because it forms something new

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

A s'more is a dessert made by placing a piece of chocolate and a toasted marshmallow between 2 graham crackers. The warmth of the marshmallow causes the chocolate to melt. If the marshmallow catches fire while being toasted, it turns black and does not taste sweet. What type of change happens to the marshmallow in this situation?

• physical because it changes colors

• physical because it changes flavor

• chemical because part of it forms something new, a different color, and isn't as sweet

Tags

NGSS.MS-PS1-2

Cutting something is a

• physical change

• chemical change

Grilling meat is

• a physical change

• a chemical change

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

NGSS.MS-PS1-5

If you take away enough heat from water, what will happen to the water?

• It will begin to boil.

• It will become a solid.

• It will turn into a gas.

• It will increase in weight.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

A different chemical substance is formed when (chemical change)

• a cloth is cut

• a cup breaks

• a piece of paper burns

• a piece of chalk breaks apart

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

When sugar is dissolved in water, has a chemical change or a physical change taken place?

• physical change

• chemical change

Tags

NGSS.MS-PS1-2

Which change of matter causes the identity of the matter to change?

• physical change

• chemical change

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

This change of matter can be easily observed and does not change what the matter is.

• chemical change

• physical change

Is crushing a can a physical change or a chemical change?

• physical change

• chemical change