Chapter 1 worksheet

Name___________________________________

MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.

1) Molecules can be described asA) mixtures of two or more pure substances.B) heterogeneous mixtures.C) mixtures of two or more elements that has a specific ratio between components.D) two or more atoms chemically joined together.E) homogeneous mixtures.

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2) Choose the pure substance from the list below.A) sugarB) lemonadeC) sea waterD) milkE) air

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3) Choose the heterogeneous mixture from the list below.A) black coffeeB) chicken noodle soupC) chlorine gasD) sports drinkE) carbon (graphite)

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4) Ammonia is an example ofA) an element. B) a compound.C) a homogeneous mixture. D) a heterogeneous mixture.

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

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6) Which of the following are examples of intensive properties?A) volumeB) massC) densityD) None of the above are examples of intensive properties.E) All of the above are examples of intensive properties.

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7) Which of the following are examples of a chemical change?A) water boilingB) leaves turning color in the fallC) coffee brewingD) salt dissolves in waterE) None of the above are chemical changes.

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8) If a solution has a temperature of 355 K, what is its temperature in degrees celsius?A) 628°C B) 82°C C) 279°C D) 165°C E) 179°C

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9) How many of the following numbers contain 3 significant figures?0.408 9.040 0.0400 9.05 × 1024

A) one B) two C) three D) four

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10) Without using a calculator, solve the following problem:[(1 × 10-8) × (1 × 105)]2

(1 × 106)

A) 1 × 100 B) 1 × 106 C) 1 × 10-18 D) 1 × 10-12

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11) Round off 00907506 to four significant figures.A) 9.075 × 105 B) 9076 C) 0091 D) 9100

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12) The width, length, and height of a large, custom-made shipping crate are 1.22 m, 3.22 m, and0.83 m, respectively. The volume of the box using the correct number of significant figures is__________ m3.A) 3.3 B) 3.26057 C) 3.261 D) 3.2606 E) 3.26

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13) How many significant figures are there in the answer for the following problem?[(143.7 - 121) × 2.06]

0.600 = ?

A) one B) two C) three D) four

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14) How many significant figures are there in the answer for the following problem?56.4 + 0.8822 + 21 = ?

A) one B) two C) three D) four

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

A) 15.000 cmB) 15.0 cmC) 15.00 cmD) 15 cmE) 20 cm

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16) How many cm3 are contained in 3.77 × 104 mm3?A) 3.77 × 10-10 cm3

B) 3.77 × 106 cm3

C) 3.77 × 101 cm3

D) 3.77 × 104 cm3

E) 3.77 × 1020 cm3

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17) A student performs an experiment to determine the density of a sugar solution. She obtains thefollowing results: 1.71 g/mL, 1.73 g/mL, 1.67 g/mL, 1.69 g/mL. If the actual value for thedensity of the sugar solution is 1.40 g/mL, which statement below best describes her results?A) Her results are neither precise nor accurate.B) Her results are accurate, but not precise.C) Her results are both precise and accurateD) Her results are precise, but not accurate.E) It isn't possible to determine with the information given.

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18) An alligator is 244.0 cm long. How long is he in feet?A) 6.00 ft B) 9.00 ft C) 8.00 feet D) 96.0 ft E) 20.3 ft

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19) How many cm are in 22.2 ft?A) 4.70 cm B) 677 cm C) 56.4 cm D) 0.728 cm E) 105 cm

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20) Gas is sold for $1.399 per liter in Toronto, Canada. Your car needs 12.00 gallons. How much willyour credit card be charged in Canadian dollars?A) $67.15 B) $4.44 C) $63.54 D) $16.79

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21) 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) 7.1 gallonsB) 24 gallonsC) 21 gallonsD) 47 gallonsE) 2.3 gallons

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Answer KeyTestname: CHAPTER1WORKSHEET

1) D2) A3) B4) B5) A6) C7) B8) B9) C10) D11) A12) A13) B14) B15) C16) C17) D18) C19) B20) C21) A

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