Chem Comm ~ Energy Basics Test

Temperature is the ________ of energy.

• Transfer
• Measure

Which choice below deals with how fast the particles of an object move?

• Heat
• Temperature

A measure of the average kinetic energy of the particles in an object.

• electrical energy

• conduction

• convection

• temperature

Heat, like work, is an energy transfer measured in

• watts

• degrees

• Joules

• Kelvin

Heat transfer occurs (Heat travels from...)

• in many directions.

• both from warm objects to colder ones and from cold objects to warmer ones.

• only from warm objects to colder ones.

• only from cold objects to warmer ones.

Which of these objects has the most THERMAL ENERGY?

• Iceberg

• Ice cube

• Boiling pot of water

• Monkey

Heat is defined as

• the transfer of thermal energy from one object to another due to temperature difference

• the temperature of a solid, liquid, or gas

• The kinetic energy of a solid, liquid, or gas.

As part of a lab experiment, Tasha drops a metal cube into a beaker of water, as shown in the figure below.

After energy in the form of heat transfers between the substances, what is the final temperature of the water?

• The final temperature is 25 °C because there is more water than metal.

• The final temperature is 50 °C because the metal warms the water to the temperature of the metal.

• The final temperature is between 25 °C and 50 °C because energy is transferred from the metal to the water.

• The final temperature is between 25 °C and 50 °C because most of the thermal energy is lost to the air around the substances.

In which region(s) does temperature remain constant?

• Region 1, 3, & 5
• Region 2 & 4
• Region 1 only
• Region 1 & 2

In which region(s) of the graph does a phase change occur?

• Region 1, 3, & 5
• Region 2 & 4
• Region 1 only
• Region 1 & 2