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The SI base unit of mass is


A) mg.
B) g.
C) kg.
D) metric ton.
E) lb.

F) A) and C)
G) A) and B)

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50.0 grams of acetic acid are required for an experiment.What volume,in milliliters,of a 1.105 g/cm3 acetic acid solution must be measured for the experiment?


A) 0.0452 mL
B) 45.2 mL
C) 55.3 mL
D) 0.452 mL
E) 4.52 mL

F) A) and E)
G) C) and D)

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Identify this process as a physical or chemical change: Bacteria convert milk to yogurt.

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A(n)_______________ ____________ does not have a uniform composition throughout.

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heterogene...

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What is the volume of a container that contains 14.3 g of a substance having a density of 0.988 g/cm3?


A) 14.1 cm3
B) 0.0691 cm3
C) 14.5 cm3
D) 141 cm3
E) 691 cm3

F) A) and E)
G) A) and D)

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How many mm3 are in 16.7 cm3?


A) 1.67 × 10-5 mm3
B) 1.67 × 10-8 mm3
C) 1.67 × 107 mm3
D) 1.67 × 104 mm3
E) 1.67 × 10-4 mm3

F) C) and D)
G) C) and E)

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Which of these quantities represents the largest mass?


A) 2.0 × 102 mg
B) 0.0010 kg
C) 1.0 × 105 μg
D) 2.0 × 102 cg
E) 10.0 dg

F) A) and B)
G) B) and E)

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Which of the following is a 'substance' according to the definition given in your textbook?


A) Air
B) Tap water
C) Sea water
D) Water
E) Toothpaste

F) A) and B)
G) A) and D)

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Explain the difference between accuracy and precision.

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Accuracy tells us how close a ...

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