Chapter 2 Chemistry and Measurements

Question 1

what are the units of measurement within the metric system for volume, length, mass, temperature, and time?

Answer 1

Question 2

what is the unit of measurement within the SI system for volume, length, mass, temperature and time?

Answer 2

Question 3

what are measured numbers defined as?

Answer 3

come from measurements
can include estimated numbers

Question 4

what are exact numbers defined as?

Answer 4

given by definition (1m = 1000mm) or by counting

Question 5

how many sig figs in the number 850,000?

Answer 5

2

Question 6

how many sig figs in the number 0.00045?

Answer 6

2

Question 7

how many sig figs in the number 88.00?

Answer 7

4

Question 8

how do you determine the amount of sig figs in the final answer of a multiplication or division problem?

Answer 8

should have the least number of sig figs from any of the quotients or multiples within the problem

Question 9

how do you determine the amount of sig figs in the final answer of a addition or subtraction problem?

Answer 9

final answer should have the least number of digits AFTER the decimal point

Question 10

what should the answer be in this equation?:

Answer 10

Question 11

what should the answer be in the equation,
101.050g + 22.30g + 7.03g + 2.1g ?

Answer 11

Question 12

what is the formula for finding the specific gravity?

Answer 12

can simply be found by taking the density of the specified substance and just get rid of its units of measure (specific gravity is unitless)

Question 13

what is a mnemonic that can be used to remember the prefixes within the metric and SI system?

Answer 13

Question 14

Be able to show work for converting 35.1m to cm

Answer 14