Exam 3: Matter and Energy

When methane is burned with oxygen,the products are carbon dioxide and water.If you produce 9 grams of water and 11 grams of carbon dioxide from 16 grams of oxygen,how many grams of methane were needed for the reaction?

Which of the following is NOT an example of a physical property?

What is the value of 98 °F in units of °C?

The process of boiling water is an endothermic process.

Temperature is defined as the transfer of thermal energy caused by a temperature difference.

The large heat capacity of water limits large fluctuations in temperature near bodies of water during the summer months.

How would you classify salt water?

Temperature is simply a measure of the motion of atoms and molecules.

An amorphous solid has long range,repeating order.

Which state of matter has atomic spacing that is far apart and definite shape?

When 49.5 J of heat was transferred to 7.3 g iron at 22°C,the temperature of iron increases to 37°C.What is the specific heat of iron in J/g∙°C?

Air is a pure substance.

In calculating the relationship between the amount of heat added to a substance and the corresponding temperature change,the specific heat capacity is usually represented by which symbol?

The energy of position is called kinetic energy.

Melting point can be defined as the temperature when a solid becomes a liquid.The melting point of the chemical acetone is -95°C.Which state of matter would you expect to exist for acetone at a temperature of -94°C?

The boiling point of water is: (1)212 °F (2)0°C (3)373 K

Which of the following is a heterogenous mixture?

How many joules are in 55.2 calories?