91Ó°ÊÓ

Identify each of the following as a physical or chemical property: (3.2) a. Mercury has a silvery shiny appearance. b. Mercury is a liquid in room temperature. c. The volume of mercury expands upon heating, therefore it is used as a thermometric liquid. d. Mercury reacts with yellow sulfur to form a red solid.

Identify each of the following as a physical or chemical property: (3.2) a. burning of gasoline to give \(\mathrm{CO}_{2}\) and water vapor b. souring of milk c. magnetizing a compass needle d. dicing potatoes into small pieces

Identify each of the following as a physical or chemical change: (3.2) a. Apples turn brown after cutting. b. A fertilized egg turns into an embryo. c. Damp clothes are dried under the sun. d. Egg white is set upon heating.

Identify each of the following as a physical or chemical change: (3.2) a. Aspirin tablets are broken in half. b. Carrots are grated for use in a salad. c. Malt undergoes fermentation to make beer. d. A copper pipe reacts with air and turns green.

Calculate each of the following temperatures in degrees Celsius and kelvins: (3.3) a. The highest recorded temperature in the continental United States was \(134^{\circ} \mathrm{F}\) in Death Valley, California, on July 10,1913 . b. The lowest recorded temperature in the continental United States was \(-69.7^{\circ} \mathrm{F}\) in Rodgers Pass, Montana, on January 20,1954

Calculate each of the following temperatures in kelvins and degrees Fahrenheit: (3.3) a. The highest recorded temperature in the world was \(58.0^{\circ} \mathrm{C}\) in El Azizia, Libya, on September 13,1922 . b. The lowest recorded temperature in the world was \(-89.2^{\circ} \mathrm{C}\) in Vostok, Antarctica, on July 21,1983 .

What is \(-20^{\circ} \mathrm{F}\) in degrees Celsius and in kelvins? (3.3)

What is \(56^{\circ} \mathrm{F}\) in degrees Celsius and in kelvins?

A \(0.50-\mathrm{g}\) sample of vegetable oil is placed in a calorimeter. When the sample is burned, \(18.9 \mathrm{~kJ}\) is given off. What is the energy value (kcal/g) for the oil? (3.5)

A 1.3 -g sample of rice is placed in a calorimeter. When the sample is burned, \(22 \mathrm{~kJ}\) is given off. What is the energy value (kcal/g) for the rice? (3.5)