Unit 1 Review (6.5AD)

Which of the following represents an element?

• H₂O

• NaCl

• H₂

• CaCO₃

Salt has a chemical formula of NaCl. Salt is a...

• Compound

• Mixture

• Element

• None of the Above

Tags

NGSS.MS-PS1-1

An element is made up of only one kind of _____.

• isotope

• atom

• plastic

• metal

Tags

NGSS.MS-PS1-1

This picture represents which of the following?

• element

• an atom

• compound

• bubbles

Tags

NGSS.MS-PS1-1

In this diagram, X represents...

• A compound

• An atom

• A mixture

• An element

Tags

NGSS.MS-PS1-1

How is a chemical change different from a physical change?

• there is no difference

• a physical change creates a new substance

• a chemical change creates a new substance

Tags

NGSS.MS-PS1-2

Is burning wood a chemical or physical change?

• chemical
• physical

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Is glass breaking a chemical or physical change?

• chemical
• physical

Which is a chemical change?

• freezing fruit juice
• slicing a potato
• boiling water
• copper metal turning green

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Which of the following is a sign that a chemical reaction has occurred?

• change in shape
• melting
• formation of a gas
• dissolving

Tags

NGSS.MS-PS1-2