Chapter 2

Question 1

What is the formula for scientific notation?

Answer 1

N*10^n

Question 2

If decimal is moved left, n is…

Answer 2

positive

Question 3

If decimal is moved right, n is…

Answer 3

negative

Question 4

What do you do with the exponent when adding or subtracting in scientific notation?

Answer 4

Convert to the same exponent

Question 5

What do you do with the exponent when multiplying or dividing in scientific notation?

Answer 5

Add them together if it’s multiplication, and subtract if it’s division

Question 6

What are the 5 sig fig rules?

Answer 6

• all non-zero digits are significant
• zeros that appear between non-zeros are significant
• leading zeros are never significant
• trailing zeros in a number with a decimal are significant

Question 7

What is the rounding rule for sig figs in addition and subtraction?

Answer 7

limit the answer to the lowest in the column

Question 8

What is the rounding rule for sig figs in multiplication and division?

Answer 8

limit the number of sig figs to the lowest amount in the equation

Question 9

What are the 5 measurement prefixes bigger than a base measurement (in decreasing order)?

Answer 9

• giga
• mega
• kilo
• hecto
• deka

Question 10

What are the 6 measurement prefixes smaller than a base measurement (in decreasing order)?

Answer 10

• deci
• centi
• milli
• micro
• nano
• pico

Question 11

How many cm are in 3.55 m?
(100 cm = 1 m)

Answer 11

355 cm

Question 12

Convert 58.2 Ms to megaseconds
(1 Ms = 10^6 s)

Answer 12

5.82*10^-8 Ms

Question 13

How many seconds are in a day?
(1d = 24h; 60m = 1h; 60s = 1m)

Answer 13

86,400s

Question 14

What is the formula for density?

Answer 14

p=m/v

Question 15

Find density when v=36.5 L and m=10.0 kg (kg/L)

Answer 15

1.049 kg/L

Question 16

Put 554,780,000 in scientific notation

Answer 16

5.5*10^11