Chemical/Physical Changes

Bubbles that form from baking soda and vinegar combining show that a chemical reaction has taken place. What do the bubbles demonstrate?

• A color change

• A gas is formed

• A solid has dissolved

• A precipitate is formed

Tags

NGSS.MS-PS1-2

Which of these is a chemical change?

• Wood burning

• Rocks breaking down into soil

• Boiling water

• Sugar dissolving in water

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Which does NOT identify the formation of a new substance?

• A gas is produced

• One liquid dissolves into another

• temperature changes

• A solid is formed when two liquids mix together

Tags

NGSS.MS-PS1-2

Fizzing and Bubbling when 2 liquids combine indicates:

• A chemical reaction produced a solid

• No chemical reaction took place

• Only a physical change took place

• A chemical change produced a gas

Tags

NGSS.MS-PS1-2

Cooking or baking is an example of a:

• Chemical change

• Physical change

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

A silver spoon tarnishing is an example of:

• Physical change

• Chemical change

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Leaves changing in the fall is an example of:

• Physical change

• Chemical change

Water separating into hydrogen and oxygen is an example of:

• Chemical change

• Physical change

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Which describes a PHYSICAL CHANGE?

• Molecules combine to form a compound

• A new element is created

• The size, shape or state of matter changes

• Elements combine to form a molecule

Which of the following is a clue that a chemical change has taken place?

• A gas forms

• The substance is smaller

• The substance was shaken up

• The substance looks the same

Tags

NGSS.MS-PS1-2