Question 1

Which of the following abbreviations of the given SI base unit is incorrect?

Accepted Answer

A)   second: s
B)   kilogram: kg
C)   meter: m
D)   mole: mol
E)   kelvin: kF) B) and C)
G) B) and E)

Question 2

Which of the following represents the largest volume?

Accepted Answer

A)   10,000 µL
B)   1000 pL
C)   100 mL
D)   10 nL
E)   10 cm3F) A) and D)
G) A) and E)

Question 3

When applying the scientific method, a model or theory should be based on experimental data.

Accepted Answer

A) True 
 B)False

Question 4

If the price of gold at the morning fixing in London was $5310 per lb, what would a kilogram of gold have cost in ≤\le≤  (pounds) ? (Assume an exchange rate of $1.00 = ≤\le≤ 0.545)

Accepted Answer

A)   ( ≤\le≤ 1310) 
B)    ≤\le≤ 3510) 
C)   ( ≤\le≤ 6370) 
D)  ( ≤\le≤ 10400) 
E)   ( ≤\le≤ 17100)  F) A) and D)
G) B) and C)

Question 5

The appropriate number of significant figures in the result of 15.234 - 15.208 is:

Accepted Answer

A)   1
B)   2
C)   3
D)   4
E)   5F) B) and C)
G) None of the above

Question 6

Which of the following correctly expresses 0.000007913 g in scientific notation?

Accepted Answer

A)   7.913 * 106 g
B)   7.913 * 105 g
C)   7.913 *10-5 g
D)   7.913 * 10-6 g
E)   7.913 * 10-9 gF) None of the above
G) A) and E)

Question 7

The joule is the S.I. unit of energy, and is equal to 1 kg m2 s-2. The erg is another energy unit, equal to 1 g cm2 s-2. Use unit conversion methods to work out how many ergs are there in 1 joule.

Accepted Answer

A)   10-1 ergs
B)   10 ergs
C)   102 ergs
D)   105 ergs
E)   107 ergsF) B) and D)
G) B) and C)

Question 8

Select the best statement.

Accepted Answer

A)   Physical changes may be reversed by changing the temperature.
B)   Physical changes alter the composition of the substances involved.
C)   Physical properties are not valid characteristics for identifying a substance.
D)   Physical properties are mostly extensive in nature.
E)   Physical changes are usually accompanied by chemical changes.F) B) and C)
G) B) and D)

Exam 1: Keys to the Study of Chemistry

The appropriate number of significant figures in the result of 15.234 - 15.208 is:

Correct Answer
verified

The joule is the S.I. unit of energy, and is equal to 1 kg m² s^-2. The erg is another energy unit, equal to 1 g cm² s^-2. Use unit conversion methods to work out how many ergs are there in 1 joule.

Correct Answer
verified

When applying the scientific method, a model or theory should be based on experimental data.

Correct Answer
verified

If the price of gold at the morning fixing in London was $5310 per lb, what would a kilogram of gold have cost in $\le$ (pounds) ? (Assume an exchange rate of $1.00 = $\le$ 0.545)

Correct Answer
verified

Which of the following correctly expresses 0.000007913 g in scientific notation?

Correct Answer
verified

Which of the following abbreviations of the given SI base unit is incorrect?

Correct Answer
verified

Select the best statement.

Correct Answer
verified

Which of the following represents the largest volume?

Correct Answer
verified

Exam 1: Keys to the Study of Chemistry

The appropriate number of significant figures in the result of 15.234 - 15.208 is:

Correct AnswerverifiedShow Answer

The joule is the S.I. unit of energy, and is equal to 1 kg m2 s-2. The erg is another energy unit, equal to 1 g cm2 s-2. Use unit conversion methods to work out how many ergs are there in 1 joule.

Correct AnswerverifiedShow Answer

When applying the scientific method, a model or theory should be based on experimental data.

Correct AnswerverifiedShow Answer

If the price of gold at the morning fixing in London was $5310 per lb, what would a kilogram of gold have cost in ≤\le≤ (pounds) ? (Assume an exchange rate of $1.00 = ≤\le≤ 0.545)

Correct AnswerverifiedShow Answer

Which of the following correctly expresses 0.000007913 g in scientific notation?

Correct AnswerverifiedShow Answer

Which of the following abbreviations of the given SI base unit is incorrect?

Correct AnswerverifiedShow Answer

Select the best statement.

Correct AnswerverifiedShow Answer

Which of the following represents the largest volume?

Correct AnswerverifiedShow Answer

Correct Answer
verified

The joule is the S.I. unit of energy, and is equal to 1 kg m² s^-2. The erg is another energy unit, equal to 1 g cm² s^-2. Use unit conversion methods to work out how many ergs are there in 1 joule.

Correct Answer
verified

Correct Answer
verified

If the price of gold at the morning fixing in London was $5310 per lb, what would a kilogram of gold have cost in $\le$ (pounds) ? (Assume an exchange rate of $1.00 = $\le$ 0.545)

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified