# BI 253 Lab 1st quiz

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1. A Kg is equal to how many grams?
1x10³ grams
2. A mg is equal to how many grams?
1x10⁻³ grams
3. A microgram is equal to how many grams?
1x10⁻⁶ grams
4. A ng is equal to how many grams?
1x10⁻⁹
5. A cm is equal to how many meters?
1x10⁻²
6. What is the conversion for ⁰F --> ⁰C?
⁰F = 1.8C + 32
7. What is the conversion for ⁰C --> ⁰F?
⁰C = ⁰F-32/1.8
8. The ____ variable goes on the Y axis.
Dependent
9. The ____ or ___ variable goes on the X axis.
• Manipulated
• Independent
10. A discrete variable has ___ ___ & employs a ___ graph.
• Limited Values
• Bar
11. A continuous variable has ___ ___ & employs a ___ graph.
• Unlimited Values
• Line
12. Define an acid.
Substance that releases or causes release of H⁺ into solution
13. There is a ___ difference between pH units.
Tenfold
14. Define a base.
A substance that can remove H⁺ fr solution lowering concentration of H⁺
15. Explain buffer solution.
Solutions containing components that enable the solution to somehow resist lg changes in pH when either an acid or base is added

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 Author: medic11 ID: 170047 Filename: BI 253 Lab 1st quiz Updated: 2012-09-10 18:10:24 Tags: BI 253 Lab Folders: Description: 1st quiz material Show Answers:

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