Heat and Matter

How is the term "heat" used differently in science as opposed to everyday language?

• Heat means hot.

• Heat means movement.

• "Heat" in every day language means the thermal energy and the transfer of the thermal energy from one thing to another. In science, "heat" refers to the energy transferred because of the temperature difference between two things.

• Did I mention that heat is HOT?

What is Thermal Energy (TE)

• Heat

• Average kinetic energy of all the particles in a material; measured by a thermometer in degrees

• The total kinetic (motion) energy of the tiny particles that make up matter; the faster the particles move, the warmer the matter becomes

• The simplest unit of a chemical compound that can exist, formed when two or more atoms join together chemically

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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.

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What are three ways heat transfers?

• Conduction

• Convection

• Radiation

• Conductor

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Heat is energy transferred between two objects of different temperature.

• True

• False

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Temperature

• Average kinetic energy of all the particles in a material; measured by a thermometer in degrees

• The total kinetic (motion) energy of the tiny particles that make up matter; the faster the particles move, the warmer the matter becomes

• The sum of all the kinetic energy (KE) and potential energy (PE) that is found within a substance

• Energy that is stored in a system or object

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You are doing your homework at a desk that is underneath a lamp. You start to feel hotter because of _?_ from the lamp.

• conduction

• convection

• radiation

States of Matter

• Gas

• Water

• Solid

• Liquid

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What is Matter?

• Movement of energy from one system to another

• The simplest unit of a chemical compound that can exist, formed when two or more atoms join together chemically

• Energy of motion

• Anything that has volume and mass

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The total thermal energy of a system depends jointly on the temperature, total number of _______________ in the system, and the _______________ of the material.

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