Matter Review

1. Which type of separation takes the longest?

• Filtration
• Crystallization
• Distillation
• Paper chromatography

2. Which type of separation can be used to separate not just blood, but also to purify viruses (in a sucrose gradient) or separate bacteria from its growth culture?

• Magnetic separation
• Filtration
• Centrifugation

3. Which kind of separation resembles the making of coffee?

• Filtration
• Distillation
• Paper chromatography

4. Which type of separation would be used to separate a mixture of iron filings from sand?

• Paper chromatography
• Magnetic separation
• None of these

5. Which method of separation takes advantage of the components' individual boiling points?

• Filtration
• Crystallization
• Distillation

6. Is blood a homogeneous or heterogeneous mixture? (think if you got a cut, not after it's been spun down)

• Hom-
• Het-

7. Which of the below is INCORRECT when centrifuging samples:

• Make sure you eyeball your sample's volume with a similar volume in another tube
• Make sure the pattern of your tubes (in the rotor) are symmetrical with one another
• You don't need to balance the rotor of the centrifuge. These are just suggestions.

8. T/F: Shaping copper into wires is a chemical change.

• True
• False

9. T/F: Dissolving sugar in water as a process of making rock candy is a physical change.

• True
• False

10. T/F: Distillation involves separating a hom- mixture.

• True
• False