1. Gold is a precious metal that is chemically unreactive. It is used mainly In jewelry, dentistry, and electronic devices. A piece of gold ingot with a Mass of 301g has a volume of 15.6 cm3. Calculate the density of gold. Answer : 19.3 g/cm3

2. A Piece of platinum metal with a density of 21.5 g/cm3 has a volume Of 4.49 cm3. What is its mass? Answer 96.53g

3. The density of mercury, the only metal that is a liquid at room temperature, Is 13.6 g/ml. Calculate the mass of 5.50 mL of the liquid. Answer: 74.8 g

4. The density of sulfuric acid in a certain car battery is 1.41 g/ml. Calculate the mass of 242 mL of the liquid. Answer 341.22g

5. Solder is an alloy made of tin and lead that is used in electric circuits. A certain solder has a melting point of 224 C. What is its melting point in Degrees Fahrenheit? Answer 435 F Helium has the lowest boiling point of all the elements at -452 F. Convert this temperature to degrees Celsius. Answer: -269 C Mercury, the only metal that exist as a liquid at room temperature, melts At -38.9C. Convert its melting point to Kelvins Answer: 234.3 K

6. Convert 327.5 C ( the melting point of lead) to degrees Fahrenheit Answer: 621.5 F Convert 172.9 ( the boiling point of ethanol to degrees Celsius Aswer 72.27 C Convert 77K, the boiling point of liquid nitrogen, to degrees Celsius Answer: -160.15

7. Determine the number of significant figures in the following measurements: a)478 cm b)6.01g c)0.825 m d)0.043 kg e)1.310 x 10 22 atoms f)700ml Answers: a)3 b)3 c)3 d)2 e)4 f)1

8. Determine the number of significant figures in each of the following Measurements: a)24ml b)3001g c)0.0320 m 3 d)6.4 x 10 4 molecules e)560 kg Answers: a)2 b)4 C)3 d)2 e) 2

9. Carry of the following arithmetic operations to the correct numbers of Significant figures: a)11251.1 g + 0.1983 g b)66.59 L – 3.113 L c)8.16 m X 5.1355 d)0.0154 kg / 88.3 ml e)2.64 X 10 3 cm + 3.27 X 10 2 cm Answers: a)11254.3 b)63.48 c)41.9 d).000174 e)2.97 x 10 ^3

10. Carry out the following arithmetic operations and round off the answers To the appropriate number of significant figures a)26.5862 L + 0.17 L b)9.1 g – 4.682 g c)7.1 X 10 4 dm X 2.2654 X 10 2 dm d)6.54 g / 86.5542 ml e)(7.55 X 10 4 m) –(8.62 X 10 3 m) Answers: a)26.76 b) 4.4 c) 17 x 10^6 d).0756 e) 6.69 x 10^4

11. A person averages daily intake of glucose ( a form of sugar) is 0.0833 pound (lb), What is the mass in milligrams ( mg)? 1lb = 453.6g Answers: 3.78 X 10^4 mg

12. A roll of aluminum foil has a mass of 1.07 kg, What is its mass in pounds? Answer: 2.35 ibs

13. An average adult has 5.2 L of blood. What is the volume of blood in m 3 Answers: 5.2 x 10 ^-3 m^3

14. The volume of a room is 1.08 X 10 8 dm 3. What is the volume is m 3 Answer: 1.08 x 10^8 X 10 ^-1