1.

List the seven SI base quantities, units, and symbols.

TIME Second (s)

2.

Give the correct SI derived units of the following quantities. Density Speed Acceleration Force Pressure kg/m3

Energy

3.

Convert the following: μm (Ans. 1.22)

a. 1.22 x 10-9 km = b. 6.523 x 10-4 nm = c. 2.5x 10-9 nm3 = d. 30.5 cm/s = e. 9.6 ng/mm2 = 4.

Mm (Ans. 6.523 x 10-19) mm3 (Ans. 2.5 x 10-27) km/h (Ans. 1.09 x 106) kg/m2 (Ans. 9.6 x 10-6)

Perform the following calculations and report each answer with the correct number of significant figures and units. b. 2.457 m x 1.2 m x 2.45 m d. 3.6050 cm x (24.10 cm - 23.10 cm)

a. 3.45 m – 3.4 m c. (50.214 g – 49.93 g) x 1.224 cm / 55.22 cm3 e. 4.0 x 102 cm – 3 cm f.

2.7612g 2.7601g

2.20cm 3

g 26.167m 83m

5.100m

h.

12.64 cm – 48 mm + 0.246 m (answer in meters) 7.87 g/m2 (16.1 m – 8.44 m)

i.

Ans. a) 0.1 m; b) 7.2 m3; c) 6.3 x 10-3 g/cm2; d) 3.61 cm2; e) 4.0 x 102 cm; f) 5.0 x 10-4 g/cm3; g) 21.4 g/m3; h) 0.324 m ; i) 1.03 g/cm3 5.

The element beryllium is considered toxic at a concentration of 3.0 x 10-12 g/cm3. What is this concentration in ng/m3? (Ans. 3.0 x 103)

6.

The average density of the earth is 5.52 g/cm 3. What is its density in: a) μg/mm3? (Ans. 5.52 x 103) b) lb/ft3? (1 lb = 453.6 g; 1 in = 2.54 cm) (Ans. 345)

7.

Diamond has a density of 3.513 g/cm3. The mass of diamonds is often measured in “carats” where 1 carat = 200 mg. What is the volume (in cm 3) of a 2.5 carat diamond? (Ans. 0.14) The density of a liquid alcohol is 0.79 g/cm 3. A tank measuring 3.2 m x 0.0020 km x 4.1 mm is filled with the alcohol. What is the mass of the contents in kg? (Ans. 21) The density of gold is 19.3 g/ cm 3. A 3.4 mg sample of gold is hammered into a square foil that is 8.6 × 10−6 cm thick. What is the length of a side of the square, in cm? (Ans. 4.5) A 14-karat gold ring contains 58.3% gold and weighs 12.41 g. If gold sells for $276.00/ounce, what is the value of...

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