Deck 1: Matter, Measurement, and Problem Solving

Question 1

Two or more substances in variable proportions,where the composition is variable throughout are considered

A)a solution.
B)a homogeneous mixture.
C)a compound.
D)an amorphous solid.
E)a heterogeneous mixture.

Answer 1

a heterogeneous mixture.

Question 2

Choose the homogeneous mixture from the list below.

A)cola
B)air
C)concrete
D)trail mix
E)blood

Answer 2

air

Question 3

Which of the following represents a hypothesis?

A)Sodium reacts with water to form sodium hydroxide and hydrogen gas.
B)Nitrogen gas is a fairly inert substance.
C)Nickel has a silvery sheen.
D)When a substance combusts,it combines with air.
E)When wood burns,heat is given off.

Answer 3

When a substance combusts,it combines with air.

Question 4

Which of the following statements is true?

A)A scientific law is fact.
B)Once a theory is constructed,it is considered fact.
C)A hypothesis is speculation that is difficult to test.
D)An observation explains why nature does something.
E)A scientific law summarizes a series of related observations.

Question 5

Two or more substances in variable proportions,where the composition is constant throughout are considered

A)a compound.
B)an element.
C)a heterogeneous mixture.
D)a homogeneous mixture.
E)a crystalline solid.

Question 6

Choose the homogeneous mixture from the list below.

A)Kool-Aid
B)mud
C)ice water
D)salad dressing
E)salsa

Question 7

Dalton's Atomic Theory states

A)that all elements have several isotopes.
B)that matter is composed of small indestructible particles.
C)that the properties of matter are determined by the properties of atoms.
D)that energy is neither created nor destroyed during a chemical reaction.
E)that an atom is predominantly empty space.

Question 8

Give the composition of water.

A)two hydrogen atoms and two oxygen atoms
B)one hydrogen atom and one oxygen atom
C)two hydrogen atoms and one oxygen atom
D)one hydrogen atom and two oxygen atoms

Question 9

Which of the following statements about crystalline and amorphous solids is true?

A)A crystalline solid is composed of atoms or molecules arranged with long-range repeating order.
B)An example of a crystalline solid is glass.
C)An example of an amorphous solid is table salt (NaCl).
D)An amorphous solid is composed of atoms or molecules arranged with long-range repeating order.
E)An amorphous solid has the well-ordered geometric arrangements of atoms.

Question 10

A substance that can't be chemically broken down into simpler substances is considered to be

A)a homogeneous mixture.
B)an element.
C)a heterogeneous mixture.
D)a compound.
E)water.

Question 11

Choose the heterogeneous mixture from the list below.

A)Gatorade
B)chlorine gas
C)black coffee
D)chicken noodle soup
E)carbon (graphitE)

Question 12

The statement,"In a chemical reaction,matter is neither created nor destroyed" is called

A)The Law of Conservation of Mass.
B)Dalton's Atomic Theory.
C)The Scientific Method.
D)The Law of Multiple Proportions.
E)The Law of Definite Proportions.

Question 13

Choose the pure substance from the list below.

A)sea water
B)sugar
C)air
D)lemonade
E)milk

Question 14

Which of the following is an example of physical change?

A)Sugar is dissolved in water.
B)Coffee is brewed.
C)Dry ice sublimes.
D)Ice (solid water)melts.
E)All of these are examples of physical change.

Question 15

Identify a liquid.

A)definite volume and definite shape
B)definite volume and no definite shape
C)definite shape and no definite volume
D)no definite shape and no definite volume

Question 16

The Scientific Method

A)is just a theory.
B)is a strict set of rules and procedures that lead to inarguable fact.
C)isn't used much in modern chemistry.
D)is based on continued observation and experiment.
E)is a framework for proving an argument you know to be true.

Question 17

Choose the pure substance from the list below.

A)tea
B)a casserole
C)carbon monoxide
D)sugar water
E)pomegranate juice

Question 18

Which of the following statements about the phases of matter is true?

A)In both solids and liquids,the atoms or molecules are loosely packed.
B)Solids are highly compressible.
C)Gases are highly compressible.
D)Atoms in solids,liquids and gases can move freely
E)Liquids have a fixed volume.

Question 19

Molecules can be described as

A)a mixture of two or more pure substances.
B)a mixture of two or more elements that has a specific ratio between components.
C)two or more atoms chemically joined together.
D)a heterogeneous mixture.
E)a homogeneous mixture.

Question 20

A substance composed of 2 or more elements in a fixed,definite proportion is considered

A)a homogeneous mixture.
B)a heterogeneous mixture.
C)a compound.
D)a solution.
E)an alloy.

Question 21

Determine the mass of an object that has a volume of 88.6 mL and a density of 9.77 g/mL.

A)298 g
B)1100 g
C)907 g
D)568 g
E)866 g

Question 22

Which of the following is an example of chemical change?

A)Copper building materials develop a green patina over time.
B)Water vapor condenses on the window.
C)Ethanol evaporates.
D)A mixture of hydrogen and oxygen gas explodes on ignition.
E)A helium balloon goes up in the air.

Question 23

Which of the following are examples of intensive properties?

A)density
B)volume
C)mass
D)None of the above are examples of intensive properties.
E)All of the above are examples of intensive properties.

Question 24

Which of the following is an example of physical change?

A)Dew forms on a blade of grass.
B)A Halloween light stick glows after shaking.
C)An egg solidifies during cooking.
D)A hydrogen balloon explodes when contacted with a flame.
E)An iron pipe rusts in the yard.

Question 25

Which of the following represents a physical property?

A)Sodium metal is extremely reactive with chlorine gas.
B)Mercury is a silver liquid at room temperature.
C)the tendency of aluminum to "rust"
D)the flammability of butane fuel
E)the unreactive nature of argon gas

Question 26

All of the following are SI units of measurement,except

A)meter.
B)gram.
C)second.
D)kelvin.
E)mole.

Question 27

A student performs an experiment to determine the density of a sugar solution.She obtains the following results: 4.71 g/mL,4.73 g/mL,4.67 g/mL,4.69 g/mL.If the actual value for the density of the sugar solution is 4.40 g/mL,which statement below best describes her results?

A)Her results are precise,but not accurate.
B)Her results are accurate,but not precise.
C)Her results are both precise and accurate
D)Her results are neither precise nor accurate.
E)It isn't possible to determine with the information given.

Question 28

Which of the following statements about energy is false?

A)Energy can be converted from one type to another.
B)The total energy of a system remains constant.
C)Thermal energy is the energy associated with its position or composition.
D)Kinetic energy is the capacity to do work.
E)Systems tend to change in order to lower their potential energy.

Question 29

The outside air temperature is 30°F,what is the temperature in Kelvin?

A)303 K
B)307 K
C)274 K
D)272 K

Question 30

If a solution has a temperature of 355 K,what is its temperature in degrees celsius?

A)165°C
B)628°C
C)179°C
D)79°C
E)82°C

Question 31

A student performs an experiment to determine the density of a sugar solution.She obtains the following results: 4.11 g/mL,4.81 g/mL,4.95 g/mL,3.75 g/mL.If the actual value for the density of the sugar solution is 4.75 g/mL,which statement below best describes her results?

A)Her results are precise,but not accurate.
B)Her results are accurate,but not precise.
C)Her results are both precise and accurate
D)Her results are neither precise nor accurate.
E)It isn't possible to determine with the information given.

Question 32

A physical change

A)occurs when iron rusts.
B)occurs when sugar is heated into caramel.
C)occurs when glucose is converted into energy within your cells.
D)occurs when water is evaporated.
E)occurs when propane is burned for heat.

Question 33

If the temperature is 25°C,what is the temperature in °F?

A)45°F
B)298.15°F
C)77°F
D)-3.89°F

Question 34

Which of the following represents a chemical property of hydrogen gas?

A)It is gaseous at room temperature.
B)It is less dense than air.
C)It reacts explosively with oxygen.
D)It is colorless.
E)It is tasteless.

Question 35

If the temperature is 25°C,what is the temperature in K?

A)45 K
B)298 K
C)77 K
D)-3.89 K

Question 36

If the temperature is 178°F,what is the temperature in degrees Celsius?

A)352°C
B)451°C
C)67°C
D)81.1°C
E)378°C

Question 37

Determine the volume of an object that has a mass of 455.6 g and a density of 19.3 g/cm³.

A)87.9 mL
B)42.4 mL
C)18.5 mL
D)23.6 mL
E)31.2 mL

Question 38

A chemical change

A)occurs when methane gas is burned.
B)occurs when paper is shredded.
C)occurs when water is vaporized.
D)occurs when salt is dissolved in water.
E)occurs when Kool-Aid is stirred into water.

Question 39

Determine the density of an object that has a mass of 149.8 g and displaces 12 .1 mL of water when placed in a graduated cylinder.

A)8.08 g/mL
B)1.38 g/mL
C)12.4 g/mL
D)18.1 g/mL
E)11.4 g/mL

Question 40

Which of the following is an example of a chemical change?

A)coffee brewing
B)water boiling
C)nails rusting
D)salt dissolving in water
E)freezing of water

Question 41

How many mg does a 433 kg sample contain?

A)4.33 × 10^-4 mg
B)4.33 × 10⁷ mg
C)4.33 × 10^-3 mg
D)4.33 × 10⁶ mg
E)4.33 × 10⁸ mg

Question 42

How many cm³ are contained in 3.77 × 10⁴ mm³?

A)3.77 × 10⁴ cm³
B)3.77 × 10¹ cm³
C)3.77 × 10^-10 cm³
D)3.77 × 10²⁰ cm³
E)3.77 × 10⁶ cm³

Question 43

How many significant figures are in 3.408 × 10⁴ m?

A)3
B)4
C)5
D)7
E)8

Question 44

What answer should be reported,with the correct number of significant figures,for the following calculation? (965.43 × 3.911)+ 9413.4136

A)13189
B)13189.2
C)1.32 × 10⁴
D)1.3 × 10⁴
E)1.319 × 10⁴

Question 45

What wavelength of light would you report in units of nm,if the light had a wavelength of
7.60 × 10^-10 m?

A)7.60 × 10^-3 nm
B)7.60 × 10^-19 nm
C)1.32 nm
D)0.760 nm
E)760 nm

Question 46

Read the temperature with the correct number of significant figures.

A)87°C
B)87.2°C
C)87.20°C
D)87.200°C
E)87.2000°C

Question 47

If the walls in a room are 955 square feet in area,and a gallon of paint covers 15 square yards,how many gallons of paint are needed for the room? (3 ft = 1 yd)

A)47 gallons
B)21 gallons
C)7.1 gallons
D)24 gallons
E)2.3 gallons

Question 48

Read the water level with the correct number of significant figures.

A)5 mL
B)5.3 mL
C)5.32 mL
D)5.320 mL
E)5.3200 mL

Question 49

What answer should be reported,with the correct number of significant figures,for the following calculation? (249.362 + 41)/ 63.498

A)4.6
B)4.57
C)4.573
D)4.5728
E)4.57277

Question 50

How many significant figures are in the measurement,0.0005890 g?

A)4
B)5
C)6
D)7
E)8

Question 51

Read the length of the metal bar with the correct number of significant figures.

A)20 cm
B)15 cm
C)15.0 cm
D)15.00 cm
E)15.000 cm

Question 52

A person weighs 77.1 kg.What is their weight in pounds?

A)154 pounds
B)170 pounds
C)35.0 pounds
D)162 pounds

Question 53

Convert 15.0 km to miles.

A)24.1 miles
B)9.32 miles
C)591 miles
D)33.1 miles

Question 54

Read the length of the metal bar with the correct number of significant figures.

A)20 cm
B)15 cm
C)15.0 cm
D)15.00 cm
E)15.000 cm

Question 55

How many kL does a 1.25 × 10⁸ cL sample contain?

A)1.25 × 10³ kL
B)1.25 × 10¹³ kL
C)1.25 × 10⁴ kL
D)1.25 × 10¹² kL
E)1.25 × 10² kL

Question 56

How many significant figures are in the measurement,463.090 m?

A)2
B)3
C)4
D)5
E)6

Question 57

If an object has a density of 8.65 g/cm³,what is its density in units of kg/m³?

A)8.65 × 10^-3 kg/m³
B)8.65 × 10^-7 kg/m³
C)8.65 × 10³ kg/m³
D)8.65 × 10¹ kg/m³
E)8.65 × 10^-1 kg/m³

Question 58

What answer should be reported,with the correct number of significant figures,for the following calculation? (433.621 - 333.9)× 11.900

A)1.19 × 10³
B)1.187 × 10³
C)1.1868 × 10³
D)1.18680 × 10³
E)1.186799 × 10³

Question 59

If a room requires 25.4 square yards of carpeting,what is the area of the floor in units of ft²?
(3 ft = 1 yd)

A)76.2 ft²
B)8.47 ft²
C)282 ft²
D)229 ft²
E)68.6 ft²

Question 60

How many significant figures are in 1009.630 mL?

A)3
B)4
C)5
D)6
E)7

Question 61

The factor 10^-3 corresponds to which prefix?

A)deka
B)deci
C)milli
D)centi

Question 62

What decimal power does the abbreviation f represent?

A)1 × 10⁶
B)1 × 10³
C)1 × 10^-1
D)1 × 10^-15
E)1 × 10^-12

Question 63

A flash drive contains 4 gigabytes.How many bytes does it contain?

Question 64

Describe the difference between an intensive and extensive property using examples.

Question 65

Define precision.

Question 66

What is the difference between a physical property and a chemical property? Give an example of each.

Question 67

What symbol is used to represent the factor 10^-1?

A)M
B)m
C)μ
D)d

Question 68

What is the volume (in cm³)of a 43.6 g piece of metal with a density of 2.71 g/cm³?

A)16.1
B)19.5
C).425
D)6.65
E)none of the above

Question 69

Define matter.

Question 70

NaN is an example of

A)a compound.
B)an element.
C)a heterogeneous mixture.
D)a homogeneous mixture.

Question 71

Which of the following is the smallest volume?

A)44 cm³
B)1.0 dL
C)5.5 × 10³ mL
D)1.0 × 10⁸ nL

Question 72

The factor 1,000,000 corresponds to which prefix?

A)deka
B)deci
C)mega
D)milli

Question 73

Gasoline is an example of

A)a compound.
B)an element.
C)a heterogeneous mixture.
D)a homogeneous mixture.

Question 74

A sample of liquid isopropyl alcohol is placed in a sealed container.Some of the volatile isopropyl alcohol vaporizes.Does the mass of the sealed container and its contents change during the vaporization? Explain.

Question 75

Define the law of the conservation of energy.

Question 76

Gold is an example of

A)a compound.
B)an element.
C)a heterogeneous mixture.
D)a homogeneous mixture.

Question 77

Gas is sold for $1.399 per liter in Toronto,Canada.Your car needs 12.00 gallons.How much will your credit card be charged in dollars?

A)$16.79
B)$67.15
C)$4.44
D)$63.54

Question 78

Crude oil is an example of

A)a compound.
B)an element.
C)a heterogeneous mixture.
D)a homogeneous mixture.

Question 79

What decimal power does the abbreviation pico represent?

A)1 × 10⁶
B)1 × 10⁹
C)1 × 10^-1
D)1 × 10^-12
E)1 × 10^-15

Question 80

What happens to the density of a sample of iron metal as it is heated from room temperature to 100°C? (This is below the melting point of iron. )