Matter and Energy Test Review

Matter can be classified by:

• Its Physical State

• Its Uses

• Its Color

• All of These

Tags

NGSS.MS-PS1-4

Elements and Compounds are considered:

• Organic Molecules

• Heterogeneous Mixtures

• Pure Substances

• Homogenous Mixtures

What type of reaction releases energy into the surroundings?

• Exothermic

• Endothermic

• Isotonic

• Hypothermic

Tags

NGSS.MS-PS3-5

Which reaction absorbs energy from the surroundings?

• Endothermic

• Hyperthermic

• Exothermic

• Ectothermic

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

What is the term for the minimum energy required to start a reaction?

• Potential Energy

• Kinetic Energy

• Activation Energy

• Threshold Energy

Which of the following is a characteristic of an endothermic reaction?

• Releases heat

• No energy change

• Decreases entropy

• Absorbs heat

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

What can be said of a closed system when an exothermic reaction proceeds in an aqueous solution?

• There is a net energy loss.

• There is a net energy gain.

• Heat is transferred from the water to the reactants.

• Heat is transferred from the reactants to the water.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5

How many significant figures does the following number have: 0.002040

• 6
• 4
• 3
• 2

What is 78.5 rounded to one significant figure?

• 79
• 78.5
• 70
• 80

What would be the effect on the particles if more heat is supplied to the system?

• They would slow down
• They would stop moving
• They would speed up
• There would be no effect

Tags

NGSS.MS-PS1-4