Unit 2 Matter and Energy

What category of substances does the following material fall into?
Salt Water (NaCl + H₂O)

• Element
• Compound 
• Homogeneous Solution
• Heterogeneous Mixture

What category of substances does the following material fall into?
Chocolate Ice Cream

• Element
• Compound 
• Homogeneous Solution
• Heterogeneous Mixture

What category of substances does the following material fall into?
Supreme Pizza

• Element
• Compound 
• Homogeneous Solution
• Heterogeneous Mixture

In which state of matter will the atoms of an element be tightly packed together?

• Solid
• Liquid
• Gas

Tags

NGSS.MS-PS1-4

Sodium chloride (NaCl) is formed in a chemical reaction between sodium (Na) and chlorine (). What is sodium chloride?

• element
• mixture
• compound

Tags

NGSS.MS-PS1-1

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

Is hammering wood together to build a house a chemical or physical change?

• chemical
• physical

Is melting butter for popcorn a chemical or physical change?

• chemical
• physical

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Is burning wood a chemical or physical change?

• chemical
• physical

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

NGSS.MS-PS1-5

What line segment represents only the solid state?

• A-B
• B-C
• C-D
• D-E

Tags

NGSS.MS-PS1-4