Science Final Review

What two factors determine the gravitational pull on an object?

• mass and weight

• mass and matter

• velocity and density

• mass and distance

How many electrons does this atom have on the second energy level (shell)?

• 2

• 4

• 6

• 8

If a piece of matter changes shape, what happens to its mass?

• It increases
• It decreases
• it changes randomly
• it stays the same

What is mass?

• the force of an object caused by gravity
• the amount of space something takes up
• the amount of matter in an object
• how fast something is moving

Element or Compound?
H₂O

• Element
• Compound

Element or Compound?
Au

• Element
• Compound

How many elements are represented in the compound?
Na₂CO₃

• 1
• 2
• 3
• 4

At higher temperatures

• particles in an object have less energy
• particles in an object move faster
• a gas contracts

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

This type of substance is formed through a chemical change. 

• Element
• Compound
• Mixture

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-5

Which of the following requires a physical change to separate?

• Element
• Compound
• Mixture