Physical Science Review 2

What is the chemical formula of Magnesium chloride?

• MgCl

• MgCl₂

• MgC

• MgC_2

What is the chemical formula of sodium sulfate?

• SSO₄

• SoSO₄

• NaSO₄

• Na₂SO₄

What is the name of this chemical, H₂SO₄?

• Hydrogen sulfate

• Sulfuric acid

• Sulfate

• Sulfate hydrogen

Which of the following is a heterogeneous mixture?

• brass

• sand

• Kool-aid

• vanilla yogurt

Which of the following is a homogeneous mixture?

• jello

• granite

• dirt

• salsa

Having the ability to be drawn into a wire describes which property?

• Malleable
• Ductile
• Brittle
• Nonconductor

An unknown substance has the following properties: luster, brittle, a nonconductor of electricity, and high density.  How would it be classified?

• Metal
• Nonmetal
• Metalloid

The elements argon, krypton, and xenon are all non-metals. What property would these elements have in common?

• Good conductor of thermal energy
• Poor conductor of electricity
• Shiny, lustrous surface
• Soft and malleable

What does this graph represent?

• Constant speed
• Acceleration
• Not moving

Shona cycles at an average speed of 8km/h. How far has she travelled if she cycles for 4 hours?

• 55km
• 32km
• 43km
• 32miles