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Review - General Chemistry - Quiz, Exercises of Chemistry

This lecture is from General Chemistry. Key important points are: Review, Lab Safety, Equipment, Lab Equipment, Test, Odors, Used Chemicals, Night Before a Lab, Scientific Measurement, Significant Figures

Typology: Exercises

2012/2013

Uploaded on 01/30/2013

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1.10 Review
I. Lab Safety
1. List 3 pieces of lab safety equipment and the uses for each.
2. Name 3 pieces of lab equipment and the uses for each.
3. How can you test for odors in a lab?
4. Name 2 places you can put used chemicals.
5. What should you do the night before a lab?
II. Scientific Measurement
1. Identify how many significant figures are in the following numbers:
a) 1,756.04 b) 0.098 c) 3,400 d) .003 e)3,400.
2. Put the following values in scientific notation:
a) 4,300,000,000
b) 0.0000000198
c) 52,400
d) .00405
3. Multiply/Divide
a) 0.0045 x 0.034 b) 134.52 x 1.903 c) 1430.2 / 0.567 d) 132 / 12
4. Add/Subtract
a) 0.00745 + 2.110 b) 54.67 4.351 c) 75 + 21.0 d) 156.98 134.51
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1.10 – Review

I. Lab Safety

  1. List 3 pieces of lab safety equipment and the uses for each.
  2. Name 3 pieces of lab equipment and the uses for each.
  3. How can you test for odors in a lab?
  4. Name 2 places you can put used chemicals.
  5. What should you do the night before a lab?

II. Scientific Measurement

  1. Identify how many significant figures are in the following numbers:

a) 1,756.04 b) 0.098 c) 3,400 d) .003 e)3,400.

  1. Put the following values in scientific notation:

a) 4,300,000,

b) 0.

c) 52,

d).

  1. Multiply/Divide

a) 0.0045 x 0.034 b) 134.52 x 1.903 c) 1430.2 / 0.567 d) 132 / 12

  1. Add/Subtract

a) 0.00745 + 2.110 b) 54.67 – 4.351 c) 75 + 21.0 d) 156.98 – 134.

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  1. Three students measured the volume of a tennis ball 5 times each. The accepted value is: 75 mL

Student 1 Student 2 Student 3 Trial 1 71 70 72 Trial 2^81 71 Trial 3 68 64 73 Trial 4 73 76 74 Trial 5 64 81 71

a) which student was most accurate?

b) which student was most precise?

c) what is the % error for student 2, trial 5?

  1. The drive from your house to the mall is 17.8 km long. How many yards will you have to drive to get to the mall? (3 ft = 1 yard, 1.6 km = 1 mile, 1 mile = 5280 ft)
  2. You are looking to buy some gravel to surround your brand new koi pond in your back yard. A bag costs $4.99 per pound, and it weighs 12.00 kg. If 1.0 kg is equivalent to 2.2 lb, how much would you pay for 15 bags of gravel?
  3. You are about to take a cross country trip from Seattle, WA to Miami, FL. You look up the distance and you find out that it is 3,309 miles. If one mile is equivalent to 5,280 ft, and you calibrate that it takes you 1 and a half steps per foot you travel, how many steps would it take you to get from Seattle to Miami?

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