8th Grade End of Year

When are new substances formed?

• physical changes
• change in shape
• chemical change
• change in  temperature

H₂O is an example of _________

• a compound
• an element
• a homogeneous mixture
• a heterogeneous mixture

No Definite Shape and No Definite Volume

• Gas
• Liquid
• Solid

A stretched rubber band.

• Potential
• Kinetic

What force holds the planets in motion around the sun?

• Magnetic force
• Electrical force
• Gravity
• Air Resistance

What is the number of protons that the element in this image contain?

• 14
• 7
• 15
• 18

Is this balanced?
2HgO → 2Hg + O₂

• Yes
• No

Sound is caused by? 

• force
• vibrations
• instruments

pH greater than 7.

• Acids
• Bases
• All
• pure water

The graph shows Ashley riding her bike to Maria's house. 
What was occurring from point B to point C?

• She was increasing her speed.
• She stopped for 4 minutes.
• She was decreasing in speed
• She returned to the start.