untitled

Multiple Choice

The diameter of a carbon atom is 0.000 000 000 154 m. What is this number expressed in scientific notation?

• 1.54 x 10¹² m
• 1.54 x 10^-12 m
• 1.54 x 10¹⁰ m
• 1.54 x 10^-10 m

Multiple Choice

The expression of 5008 km in scientific notation is ____.

• 5.008 x 10³ km
• 50.08 X 10^-4 km
• 5.008 x 10^-3 km
• 5.008 x 10⁴ km

Multiple Choice

The closeness of a measurement to its true value is a measure of its ___.

• precision
• accuracy
• reproducibility
• usefulness

Multiple Choice

Which of the following measurements contains two significant figures?

• 0.004 00 L
• 0.004 04 L
• 0.000 44 L
• 0.004 40 L

Multiple Choice

Which group of measurements is the most precise? (Each group of measurements is for a different object.)

• 2 g, 3 g, 4 g
• 2.0 g, 3.0 g, 4.0 g
• 2 g, 2.5 g, 3 g
• 1 g, 3 g, 5 g

Multiple Choice

Three different people weigh a standard mass of 2.00 g on the same balance.  Each person obtains a reading of 7.32 g for the mass of the standard.  These results imply that the balance that was used is ____.

• accurate
• precise
• accurate and precise
• neither accurate nor precise

Multiple Choice

Which of the following measurements is expressed to three significant figures?

• 0.007 m
• 7077 mg
• 7.30 x 10^-7 km
• 0.070 mm

Multiple Choice

In the measurement 0.503 L, which digit is the estimated digit?

• 5
• the 0 immediately to the left of the 3
• 3
• the 0 to the left of the decimal point

Multiple Choice

How many significant figures are in the measurement 40,500 mg?

• two
• three
• four
• five

Multiple Choice

What is the measurement 111.009 mm rounded off to four significant digits?

• 111 mm
• 111.0 mm
• 111.01 mm
• 110 mm

Multiple Choice

What is the measurement 1042 L rounded off to two significant digits?

• 1.0 x 10³ L
• 1040 L
• 1050 L
• 1.1 x 10³ L

Multiple Choice

The chief advantage of the metric system over other systems of measurement is that it ____.

• has more units
• is in multiples of 10
• is in French
• is derived from nature itself

Multiple Choice

What is the SI unit of mass?

• liter
• joule
• candela
• kilogram

Multiple Choice

What is the temperature of absolute zero measured in ^oC?

• -373^oC
• -273^oC
• -173^oC
• -73^oC

Multiple Choice

If the temperature changes by 100 K, by how much does it change in ^oC? 

• 0^oC
• 37^oC
• 100^oC
• 273^oC

Multiple Choice

What is the quantity 0.0075 meters expressed in centimeters?

• 0.075 cm
• 0.75 cm
• 7.5 cm
• 70.5 cm

Multiple Choice

What is the quantity 7896 millimeters expressed in meters?

• 7.896 m
• 78.96 m
• 789.6 m
• 789,600 m

Multiple Choice

What is the quantity 987 milligrams expressed in grams?

• 0.000 987 g
• 0.987 g
• 9.87 g
• 98,700 g

Multiple Choice

What is the density of an object having a mass of 8.0 g and a volume of 25 cm³?

• 0.32 g/cm³
• 2.0 g/cm³
• 3.1 g/cm³
• 200 g/cm³

Multiple Choice

What is the volume of 45.6 g of silver if the density of silver is 10.5 g/mL?

• 0.23 mL
• 4.34 mL
• 479 mL
• none of the above

Multiple Choice

How many significant figures does the following number have: 0.002040?

• 6

• 4

• 3

• 2

Multiple Choice

John is a scientist and he recorded a measurement as 0.998005 in his experiment. How many significant figures does this measurement have?

• 9

• 10

• 6

• 5

Multiple Choice

Determine the number of significant figures in 10-L.

• 4

• 3

• 2

• 1

Multiple Choice

Determine the number of significant figures in 13410000 m.

• 4

• 3

• 2

• 1

Multiple Choice

Calculate 5.50 cm + 5.5 cm and give your answer with the correct number of significant figures.

• 11 cm
• 11.0 cm
• 11.00 cm
• 11.000 cm

Multiple Choice

Express 23400 in proper scientific notation.

• 2.34 x 10⁴

• 2.3 x 10³

• 2.30 x 10⁵

• 2.34 x 10³

Multiple Choice

What is 78.5 rounded to one significant figure?

• 79
• 78.5
• 70
• 80

Multiple Choice

Calculate 1.23 m x 0.89 m and give your answer with the appropriate number of significant figures.

• 1.0 m²

• 1.1 m²

• 1.0947 m²

• 1.09 m²

Multiple Choice

Calculate 12.34 + 1.234 + 0.1234.

• 13.6974

• 13.697

• 13.70

• 13.7

Multiple Choice

What is the result of 1345.567 divided by 23.56? (Use significant figures!)

• 57.11

• 58.11

• 56.75

• 83.49

Multiple Choice

How would you write 564,000,000 in scientific notation?

• 5.64 x 10^-7
• 5.64 x 10⁶
• 5.64 x 10⁸
• 56.4 x 10⁷

Multiple Choice

Express the following in scientific notation: 0.000457

• 457 x 10⁶

• 457 x 10^-6

• 4.57 x 10⁴

• 4.57 x 10^-4

Multiple Choice

It is a measure of how close measurements come to each other when they are made in the same way

• Accuracy
• Precision
• Error
• Extrapolation

Multiple Choice

How close a measurement is to the accepted value is called..

• Accuracy

• Precision

• Significant

• Estimate

Multiple Choice

Which Student is the most Precise?

• Alex

• Shandra

• Luis

Multiple Choice

What are significant figures?

• They are the reliably known digits that a measurement contains.

• They are diagrams representing significant atoms and molecules.

• They are measurements which are important to everyday life.

• They are units of measurement in the International System of Units.

Multiple Choice

Select the measurement with the correct number of significant figures.

• 8.250

• 8.25

• 8.2

• 8

Multiple Choice

Select the measurement with the correct number of significant figures.

• 6 cm

• 6.770 cm

• 6.77 cm

• 6.775 cm

Multiple Choice

How many significant figures are in the following measurement?

2.51 m

• 1 significant figure

• 2 significant figures

• 3 significant figures

• 4 significant figures

• 5 significant figures

Multiple Choice

How many significant figures are in the following measurement?

0.008 s

• 4 significant figures

• 1 significant figure

• 3 significant figures

• 8 significant figures

Multiple Choice

How many significant figures are in the following measurement?

1052.8 km

• 5 significant figures

• 3 significant figures

• 10 significant figures

• 2 significant figures

• 4 significant figures

Multiple Choice

How many significant figures are in the following measurement?

3025.000 g

• 5 significant figures

• 7 significant figures

• 6 significant figures

• 3 significant figures

• 1 significant figure

Multiple Choice

How many significant figures are in the following measurement?

500 mL

• At least 1 significant figure

• 3 significant figures

• 2 significant figures

• 5 significant figures

• 4 significant figures

Multiple Choice

How many significant figures are in the following measurement?

5.0 × 10² s

• 5 significant figures

• 3 significant figures

• 1 significant figure

• 2 significant figures

• 0 significant figures

Multiple Choice

What is the following measurement rounded to 3 significant figures?

6.589 cm

• 6.59 cm

• 6.58 cm

• 6.589 cm

• 6.60 cm

• 6.5 cm

Multiple Choice

What is the following measurement rounded to 3 significant figures?

584.49 s

• 584.4 s

• 585 s

• 584.5 s

• 584 s

• 580 s

Multiple Choice

What is the following measurement rounded to 5 significant figures?

787.985 kg

• 788 kg

• 787.98 kg

• 787.99 kg

• 788.00 kg

Multiple Choice

What is the following measurement rounded to 4 significant figures?

4.3254 m

• 4.325 m

• 4.320 m

• 4.326 m

• 4.300 m

Multiple Choice

How many significant figures are in the result for the following calculation?

$$6.08\ kg\times5.0\ \frac{m}{s}$$  

• 3 significant figures

• 1 significant figure

• 2 significant figures

• 4 significant figures

• 5 significant figures

Multiple Choice

How many significant figures are in the result for the following calculation?

$$\frac{65.3\ J}{50.085\ s}$$  

• 5 significant figures

• 2 significant figures

• 1 significant figure

• 3 significant figures

Multiple Choice

What is the result for the following calculation? Ensure that the correct number of significant figures are included in the calculated result.

$$25.085\ m\ +\ 16.2\ m$$  

• 41.3 m

• 41.2085 m

• 41.285 m

• 41.2 m

Multiple Choice

What is the result of the following calculation? Ensure that the correct number of significant figures are included in the calculated result.

$$12.582\ s\ -\ 5.23\ s$$  

• 7.360 s

• 7.36 s

• 7.35 s

• 7.352 s

• 7.350 s

Multiple Choice

For significant figures, which term is the limiting term in the following calculation?

$$17.2\ g\ +\ 9\ g\ +\ 36.333\ g\ +\ 0.58\ g$$  

• 17.2 g

• 9 g

• 36.33 g

• 0.58 g

Multiple Choice

Which set of measurements demonstrates accuracy and precision if the true value is equal to 25.0 cm?

• 19.9 cm

  20.0 cm

  20.0 cm

  20.1 cm

  20.2 cm

• 24.8 cm

  24.9 cm

  25.0 cm

  25.0 cm

  25.1 cm

• 17.2 cm

  18.9 cm

  19.8 cm

  20.0 cm

  22.0 cm

• 23.5 cm

  24.9 cm

  25.0 cm

  26.3 cm

  26.5 cm

Multiple Choice

What is precision in the context of scientific measurement?

• The consistency of a set of measurements and the extent to which they are clustered together.

• The extent to which a set of measurements aligns itself with the established true value.

• A change in the direction of the rotational axis for a given case of rotational motion.

• The number of reliably known digits in a given measurement.

Multiple Choice

How many significant figures does the following number have: 0.998005

• 9
• 10
• 6
• 5

Multiple Choice

How many significant figures does 1.90 have?

• 2

• 4

• 6

• 8

Multiple Choice

Round 0.010229 to four sig figs

• 1022
• 1023
• 0.01023
• 0.01022

Multiple Choice

Round 1009 to three sig figs

• 100
• 101
• 1010
• 1000

Multiple Choice

Round 1047.78 to three sig figs

• 104
• 105
• 1050
• 1050.00

Multiple Choice

1145.678 + 4.56 + 623.9789 + 78.1 = ? (Use significant figures!)

• 1852.3
• 2000
• 1952.3
• 1853.5

Multiple Choice

Solve & Round to Correct Sig Figs.
100 / 2.0 = 

• 50
• 50.
• 50.0
• 50.00

Multiple Choice

Solve & Round to Correct Sig Figs.
4.5 x 2.34 = 

• 11
• 10.52
• 10.5
• 10

Multiple Choice

1345.567 / 23.56 = ? (Use significant figures!)

• 57.11
• 58.11
• 56.75
• 83.49

Multiple Choice

Express 7.89 x 10^-8 in common notation.

• 0.0000000789
• 0.789
• 0.00000789
• 0.000000000789

Multiple Choice

Multiply (2.45 x 10⁸) x (8.78 x 10⁶) and express in scientific notations.

• 2.15 x 10¹⁵
• 2.15 x 10¹⁴
• 2.10 x 10¹⁴
• 2.10 x 10¹⁵

Multiple Choice

Express 23400 in proper scientific notation. 

• 2.34 x 10⁴
• 2.3 x 10³
• 2.30 x 10⁵
• 2.34 x 10³

Multiple Choice

The diameter of a carbon atom is 0.000 000 000 154 m. What is this number expressed in scientific notation?

• 1.54 x 10¹² m
• 1.54 x 10^-12 m
• 1.54 x 10¹⁰ m
• 1.54 x 10^-10 m

Multiple Choice

The chief advantage of the metric system over other systems of measurement is that it ____.

• has more units
• is in multiples of 10
• is in French
• is derived from nature itself

Multiple Choice

What is the quantity 0.0075 meters expressed in centimeters?

• 0.075 cm
• 0.75 cm
• 7.5 cm
• 70.5 cm

Multiple Choice

How many significant figures does the following number have: 0.002040

• 6
• 4
• 3
• 2

Multiple Choice

Add (7.405 x 10⁴) + (5.15 x 10^-6) and express in standard form.

• 7405
• 74050.0000051
• 74050.51
• 74050.000000000051

Multiple Choice

How would you write -5.6 x 10^-3 in standard form?

• 0.0056
• -5,600
• 0.00056
• -0.0056

Multiple Choice

Which of the following is correct scientific notation?

• 20.35 x 10⁴
• .2035 x 10⁴
• 2035 ⁴
• 2.035 x10⁴

Multiple Choice

Which of the following measurements contains two significant figures?

• 0.00400 L
• 0.00404 L
• 0.00044 L
• 0.00440 L

Chemical Properties and Changes

Physical Vs. Chemical

Multiple Choice

Characteristics that can be observed or measured; for example, color, melting point, and conductivity

• conductivity

• hardness

• physical change

• physical properties

Multiple Choice

A physical property that describes the ability to transfer heat or electrical energy

• conductivity

• hardness

• physical change

• physical properties

Multiple Choice

The measurement of the ability of a solid to dissolve in a liquid

• conductivity

• hardness

• physical change

• solubility

Multiple Choice

Which of the following statements is true about the arrangement of particles in matter?

• The particles in a gas are closer together than the particles in a liquid.

• The particles in a liquid are spread farther apart than the particles in a gas.

• The particles in a gas are spread farther apart than the particles in a solid.

• The particles in a solid are spread farther apart than the particles in a liquid.

Multiple Choice

Chewing food to break it down into smaller particles represents a _________ change, but the changing of starch into sugars by enzymes in the digestive system represents a ___________change.

• Chemical then Physical

• Physical then Chemical

• Both Physical

• Both Chemical

Multiple Choice

Which of the following is evidence of a physical change?

• New substance

• Shape Change

• Light produced

• Gas released.

Multiple Choice

Hydrochloric acid reacts with potassium hydroxide to produce a salt, water,and heat.

• Chemical Change

• Physical Change

Multiple Choice

A physical change is

• a change where the characteristics do not change the substance

• a change where the characteristics do change the substance

• a change where the chemistry changes

Multiple Choice

Which of the following examples represents a physical change?

Multiple Choice

What is the definition of chemical change?

• any change that results in the formation of one (or more) new chemical substance(s).

• changing of only the appearance of the object

• matter cannot be created or destroyed, only change form

• changes affecting the form of a chemical substance, but not its chemical composition.

Multiple Select

Choose every image that represents a chemical change.

Multiple Choice

Which of the following IS a clue that a chemical change has occurred?

• State of matter change

• Size Change

• Change in temperature

• Shape change

Multiple Choice

Is Gatorade powder dissolving in water physical or chemical change?

• Physical

• Chemical

Multiple Choice

Determine the number of Significant Figures in 101.00 mL.

• 5
• 4
• 3
• 2

Multiple Choice

Determine the number of Significant Figures in 101320 Pa.

• 5
• 4
• 3
• 6

Multiple Choice

Determine the number of Significant Figures in 0.0100 m

• 5
• 4
• 3
• 2

Multiple Choice

Determine the number of Significant Figures in 10.0 g

• 1
• 4
• 3
• 2

Multiple Choice

Determine the number of Significant Figures in 1.0 x 10¹ g.

• 1
• 4
• 3
• 2

Multiple Choice

Determine the number of Significant Figures in 10 L.

• 4
• 3
• 2
• 1

Multiple Choice

Determine the number of Significant Figures in 0.000204 kg.

• 4
• 3
• 6
• 1

Multiple Choice

Determine the number of Significant Figures in 13410000 m.

• 4
• 3
• 8
• 1

Multiple Choice

Convert the following to scientific notation. 
0.000480 
(keep the same number of sig figs)

• 4.80 x 10⁴
• 4.80 x 10^-4
• 4.8 x 10^-3
• 4.8 x 10^-4

Multiple Choice

How would you write 564,000 in scientific notation with 4 sig figs?

• 5.640 x 10^-5

• 5.640 x 10⁴

• 5.640 x 10⁵

• 5.64000 x 10⁵

Multiple Choice

Convert to scientific notation with 3 sig figs:
520,000,000  

• 520 x 10⁶
• 5.20 x 10⁷
• 5.20 x 10⁸
• 0.52 x 10⁹

Multiple Choice

What is the Volume in the graduated cylinder?

• 63.5 mL
• 63 mL
• 63.55 mL
• 6 mL

Multiple Choice

Where do we read the level of liquid?

• The highest point the liquid touches
• The bottom of the meniscus
• Half way between, we make an educated guess and round it
• The top of the meniscus

Multiple Choice

Which of these could be a correct measurement for the volume shown?  Click on this image for a better look.

• 40 mL
• 43 mL
• 43.0 mL
• 43.00 mL

Multiple Choice

Which is the correct measurement of the red line?  

• 9 cm
• 8.5 cm
• 8.50 cm
• 8.1 cm

Multiple Choice

How many significant figures does 1.90 have?

• 2

• 3

• 4

• 8

Multiple Choice

Round 1009 to three sig figs

• 100
• 101
• 1010
• 1000

Multiple Choice

Round 1047.78 to three sig figs

• 104
• 105
• 1050
• 1050.00

Multiple Choice

1145.678 + 4.56 + 623.9789 + 78.1 = ? (Use significant figures!)

• 1852.3

• 2000

• 1952.3

• 1853.5

Multiple Choice

Solve & Round to Correct Sig Figs.
4.5 x 2.34 = 

• 11
• 10.52
• 10.5
• 10

Multiple Choice

1345.567 / 23.56 = ? (Use significant figures!)

• 57.11
• 58.11
• 56.75
• 83.49

Multiple Choice

Multiply (2.45 x 10⁸) x (8.78 x 10⁶) and express in scientific notations.

• 2.15 x 10¹⁵

• 2.15 x 10¹⁴

• 2.10 x 10¹⁴

• 2.10 x 10¹⁵

Multiple Choice

How many significant figures does the following number have: 0.002040

• 6
• 4
• 3
• 2

Multiple Choice

Which of the following measurements contains two significant figures?

• 0.00400 L
• 0.00404 L
• 0.00044 L
• 0.00440 L

Multiple Choice

The number of significant figures in: 405,000

• 6

• 5

• 4

• 3

Multiple Choice

Which ruler would be able to provide a measurement of 2.21cm?

• A

• B

• C

Multiple Choice

Three different people weigh a standard mass of 2.00 g on the same balance.  Each person obtains a reading of 7.32 g for the mass of the standard.  These results imply that the balance that was used is ____.

• accurate
• precise
• accurate and precise
• neither accurate nor precise

Multiple Choice

What is 98.907 rounded to 1 significant figure?

• 98.9
• 90
• 100
• 98.91

Multiple Choice

This bullseye demonstrates...

• High Accuracy & High Precision
• High Accuracy & Low Precision
• Low Accuracy & High Precision
• Low Accuracy & Low Precision

Multiple Choice

Which Student is the most Precise?

• Alex

• Shandra

• Luis

Multiple Choice

Chemistry can be defined as the study of ...

• the environment and the solution to environmental problems

• motion, force, and energy

• the composition of matter and the changes it undergoes

• living organisms

Multiple Choice

What is the SI unit for mass?

• kg

• mol

• g

• kelvin

Multiple Choice

What is the SI unit for length?

• meter

• kg

• kelvin

• mol

Multiple Choice

What is the SI unit for temperature?

• kelvin

• celsius

• fahrenheit

• joule

Multiple Choice

How close a series of measurements are to each other is known as

• accuracy

• precision

• error

• significant figures

Multiple Choice

Which is more precise for measuring time?

• a digital clock that measures to the tenth of a second

• 
  a clock with minute and hour hands

• a digital stopwatch that measures to the hundreth of a second

Multiple Choice

How many significant figures are in the measurement 0.00130 cm?

• 5

• 2

• 3

• 4

Multiple Choice

How many significant figures are in the measurement 2.40 x 10^-5 cm?

• 5

• 2

• 3

• 4

Multiple Choice

How many significant figures are in the measurement 2200 cm?

• 5

• 2

• 3

• 4

Multiple Choice

How many significant figures are in the measurement 45000. cm?

• 5

• 2

• 3

• 4

Multiple Choice

How many significant figures are in the measurement 90.00 cm?

• 5

• 2

• 3

• 4

Multiple Choice

What is the correct measurement?

• 8

• 8.0

• 8.00

• 8.000

Multiple Choice

Written in scientific notation, the measurement 0.000 065 cm is...

• 6.5 x 10⁵ cm

• 6.5 x 10⁴ cm

• 6.5 x 10^-5 cm

• 6.5 x 10^-4 cm

Multiple Choice

Written in scientific notation, the measurement 78 000 cm is...

• 7.8 x 10⁴ cm

• 7.8 x 10⁵ cm

• 7.8 x 10^-4 cm

• 7.8 x 10^-5 cm

Multiple Choice

Determine the average mass of the following data set: 48.0 g, 53.0 g, 59.0 g, 62.0 g

• 55.5 g

• 55.75 g

• 56.0 g

• 56.25 g

Multiple Choice

If a student determines the mass of a weight to be 45.0 g, and the weight is stamped "50.00 g", the student's percent error is...

• 10.0%

• -10.0%

• 11.1%

• -11.1%

Multiple Choice

All of the following units could be used to measure volume EXCEPT

• liter

• cm³

• mL

• mol

Multiple Choice

Which of the following units has been named for a person?

• mole (mol)

• kelvin (K)

• milliliter (mL)

• megameter (Mm)