Chapter Two

Question 1

In every measurement, a _____ is followed by a _____

Answer 1

number is followed by a unit

Question 2

What happens if you don’t put a unit behind your measurements during lab?

Answer 2

You lose a point

Question 3

The metric system (SI international system) is a decimal system based on ___, used most in the world, and used everywhere by scientist

Answer 3

10

Question 4

The width of human hair is 0.000 008m is written as _______ in SN

Answer 4

8 x 10(-6)m

Question 5

4,500,000 in SN is _______

Answer 5

4.5 x 10(6)s.

Question 6

Going from a small number to a large number means your scientific notation exp. will be positive or negative?

Answer 6

Negative

Question 7

Going from a large number to a small number means your scientific notation exp. will be positive or negative?

Answer 7

Positive

Question 8

For scientific notation, do you move the decimal point left or right when going from a large number to a small number??

Answer 8

Left

Question 9

For scientific notation, do you move the decimal point left or right when going from a small number to a large number?

Answer 9

Right

Question 10

52,000.0 in SN?

Answer 10

5.2 x 10(4)

Question 11

0.00378 in SN?

Answer 11

3.78 x 10(-3)

Question 12

move the decimal so it’s greater than zero and less than _____

Answer 12

10

Question 13

2.0 x 10(-2) in standard form?

Answer 13

0.020

Question 14

To turn a scientific notation into standard form and the exp is negative, do you move the decimal left or right?

Answer 14

left

Question 15

To turn a SN into standard form and the exp is positive, do you move the decimal left or right?

Answer 15

Right

Question 16

4.5 x 10(3) is:

Answer 16

4,500.0

Question 17

In measurement, your last digit is obtained by______

Answer 17

estimating

Question 18

In measurement, if the line is a bit past 2.7 and just before 2.8, your answer should be:

Answer 18

2.75

Question 19

In measurement, the length is 2.76cm. Identify each number.

Answer 19

2 and 7 are certain (known)
final digit, 6, is estimated (uncertain)
All three digits are still significant, INCLUDING the estimated digit.

Question 20

In measurement, are all reported numbers significant digits, including the estimated digit?

Answer 20

Yes.

Question 21

If a line is just past 9.0, it is not 9.0. It is either ____ or ____

Answer 21

9.03 or 9.04 because it has not passed the 9.1 line either

Question 22

If a line ends right at a line such as 4.5, the final estimation is _____ not _____

Answer 22

4.50, not 4.5

Question 23

1L = _____ mL

Answer 23

1,000mL

Question 24

1L = ___ qt

Answer 24

1.06qt

Question 25

946mL = ___ qt

Answer 25

one quart

Question 26

1m = ____cm

Answer 26

100

Question 27

1m = _____ in

Answer 27

39.4 inches

Question 28

1m = _____yd

Answer 28

1.09yd

Question 29

2.54cm = ___in

Answer 29

one inch

Question 30

1kg = ______g

Answer 30

1,000g

Question 31

1kg = ____lb

Answer 31

2.20lb

Question 32

454g = ____lb

Answer 32

1 lb

Question 33

Water freezes at ___ celsius and boils at ____ celsius

Answer 33

0 and 100

Question 34

Water freezes at ____ F and boils at ______F

Answer 34

32F and 212F

Question 35

The SI unit for volume is the ______

Answer 35

cubic meter (m3)

Question 36

The SI unit for mass is the _____

Answer 36

Kilogram (kg)

Question 37

The SI unit for length is the ____

Answer 37

meter (m)

Question 38

The SI unit for temperature is the ___

Answer 38

Kelvin

Question 39

Is a number a significant figure if it is not a zero?

Answer 39

YEs

Question 40

Is a number a significant figure if it is a zero between nonzero digits?

Answer 40

Yes

Question 41

Is a number a significant figure if it's a zero at the end of a decimal number? (i.e 50. or 16.00)?

Answer 41

Yes (2 and 4 sig fig)

Question 42

True or false, a zero is not a significant figure if it is at the beginning of a decimal number?

Answer 42

True

Question 43

True or false, a zero is a significant figure if it is used as a placeholder in a large number without a decimal point.

Answer 43

False, it is NOT a sig fig if there is no decimal place (850,000 only has two sig fig. 250 only has two sig fig)

Question 44

If a person weighs 178b, what is the body mass in kilograms?

Answer 44

80.9kg

Question 45

A rattlesnake is 2.44m long. How many cm is that?

Answer 45

244cm

Question 46

How many minutes are in 1.6 days?

Answer 46

2,300 min

Question 47

What's the formula to find density?

Answer 47

D=m/v

Question 48

What's the formula to find volume?

Answer 48

V=m/d

Question 49

density is written as:

Answer 49

g/mL (liquid and solid) | g/L (gas)

Question 50

Density of water?

Answer 50

1.00g/mL

Question 51

Specific gravity is the relationship between what?

Answer 51

Between the density of a substance and the density of water

Question 52

Specific gravity is calculated by dividing the density of a sample by the density of water. True or false?

Answer 52

True