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General Chemistry - Chemistry I and Lab > Module 2 - Measurement > Flashcards

Module 2 - Measurement Flashcards

1
Q

Imagine that Sarah gave you a sheet of paper with 2.7 L written on it. What type of measurement does this represent?

A

volume

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2
Q

0 ºC is the coldest possible temperature.

A

false

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3
Q

A measure of 9 nm is smaller than 9.2 m.

A

true

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4
Q

A micrometer is equal to how many meters?

A

10-6 m

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5
Q

On the Celsius scale, water freezes at 32°.

A

false

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6
Q

The length of a bacterium is usually measured in microns.

A

true

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7
Q

There are seven significant figures in 0.0893140 L.

A

false

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8
Q

Thermometers have no uncertainty.

A

false

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9
Q

How many significant figures are in the following measurement?

87.9340 g

A

6

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10
Q

Because they have tick marks, beakers can be used for measuring solutions accurately.

A

false

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11
Q

In the metric system, what is the basic unit of length?

A

m

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12
Q

When pouring from graduated cylinders, some volume is lost as liquid remains in the cylinder.

A

true

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13
Q

Conversion factors are used to determine the number of significant figures present in a calculated value.

A

false

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14
Q

7.38 x 105 is larger than 8.78 x 104.

A

true

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15
Q

16.9 mg is equivalent to __________ grams.

A

0.0169

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16
Q

Long distance runners normally track how far they run while training. What SI unit would be used to do this?

A

meters

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17
Q

Fahrenheit is to ______ as feet is to _______.

A

kelvin; meters

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18
Q

____ is the prefix that represents 1000 times greater than the base unit.

A

kilo

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19
Q

One-tenth can be identified as _____ or _____.

A

0.1; deci

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20
Q

How is the base number represented using exponential terms?

A

10^0

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21
Q

When traveling to a European country, one will most likely see the temperature displayed in Celsius. If it is 25°C in Paris, France, what would this temperature be in Fahrenheit?

A

77°F

22
Q

Convert 19°C to Kelvin.

A

292.15k

23
Q

To calculate Kelvin from Fahrenheit, one must convert to Celsius first.

A

true

24
Q

Petrologists are scientists that study rocks. If a petrologist finds a rock with a mass of 86g and a volume of 10cm3, what is the rock’s density?

A

8.6g/cm3

25
Q

Density can be represented in g/cm3 or g/mL.

A

true

26
Q

Which set of numbers is most precise?

A

6.81, 6.7, 6.79, 6.72

27
Q

The less significant figures, the greater precision.

A

false

28
Q

If the desired measurement is 19.5 m, which measurement is most accurate?

A

19.475 m

29
Q

The mass of an empty Boeing 737-800 airplane is about 41,145kg. Which of the following would be the best choice for recording this measurement in scientific notation?

A

4.11 x 104

30
Q

If a person is 5 feet 8 inches tall, what is their approximate height in centimeters?

A

173cm

31
Q

A standard bathtub can hold 302 liters of water. Which represents this measurement in quarts with the appropriate number of significant figures?

A

319qt

32
Q

A school holds a contest where students guess how many gumballs are in a very large container in the gymnasium. The actual number of gumballs is 3.84 x 105. In standard notation, there are ______ gumballs.

A

384,000

33
Q

A dog is weighed during a visit to the vet and is recorded at 25.8 pounds. Convert this weight into kilograms with the appropriate number of significant figures.

A

11.7kg

34
Q

Converting from miles to inches generally includes the use of a single conversion factor.

A

false

35
Q

A house sells for $492,200. This price can most accurately be represented in scientific notation as…

A

4.92 x 105

36
Q

The meteorologist indicated that the temperature would reach a high of 86 °F. What is this temperature on the Celsius scale?

A

30 °C

37
Q

A measurement reported as 0.001 grams could also be reported as 1…

A

mg

38
Q

What is the density (rounded to the nearest whole number) of a gold sample that has a mass of 12.3 grams and a volume of 0.77 milliliters?

A

16 g/mL

39
Q

If the volume of juice was measured using the metric system, what base unit would be reported?

A

L

40
Q

Which of the following is equivalent to 1,000,000 g?

A

1 Mg

41
Q

Based on the rules of significant figures, how should the following calculation be reported?

67.403 cm x 31.8 cm = ?

A

2140 cm2

42
Q

Use the arrow to indicate the measurement that should be reported:

A

3.52 inches

43
Q

Based on the rules of significant figures, how should the following calculation be reported?

274.13 g + 37.531 g + 49.2 g = ?

A

360.9 g

44
Q

Round 0.013849 to three significant figures.

A

0.0138

45
Q

Which measurement has the least amount of uncertainty?

A

3.123 L

46
Q

What conversion factor would you use to calculate 39 grams to kilograms?

A

1 kg / 1000 g

47
Q

How many milligrams are in 5.3 kilograms? Report your answer based on the rules of significant figures.

A

5.3 x 106

48
Q

How many pounds are in 620.0 grams? Report your answer based on the rules of significant figures.

A

1.367 lb

49
Q

What is the standard notation value of 7.221 x 10-4?

A

0.0007221

50
Q

If your height is 66 inches, how many centimeters tall are you? Report your answer based on the rules of significant figures.

A

170 cm

General Chemistry - Chemistry I and Lab (11 decks)

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