Chapter 2 Vocabulary Review

Conductor

• A material that allows the flow of electrical current or thermal energy.

• A substance that resists the flow of electrical current.

• A device that stores electrical energy.

• A material that reflects thermal energy.

Gas

• A state of matter consisting of particles that have neither a defined volume nor defined shape.

• A state of matter with a fixed volume but no fixed shape.

• A state of matter that has a defined shape and volume.

• A state of matter that is always solid at room temperature.

Thermal Energy

• heat

• cold

• light

• electricity

Solubility

• The ability of a substance to dissolve in a solvent or liquid.

• The measure of how much solute can be dissolved in a given amount of solvent at a specific temperature.

• The process of separating a mixture into its individual components.

• The capacity of a substance to conduct electricity when dissolved in water.

Matter

• Anything that has mass and takes up space.

• A substance that can be seen but not touched.

• A form of energy that cannot be measured.

• A type of chemical reaction that occurs in solids.

Less Dense

• Having a higher density compared to another substance, SINKS

• Having a lower density compared to another substance, FLOATS

• Having the same density as another substance, NEUTRAL

• Having an undefined density, VARIABLE

More Dense

• Having a lower density compared to another substance, FLOATS

• Having a higher density compared to another substance, SINKS

• Having the same density as another substance, NEUTRAL

• Having a variable density depending on temperature, CHANGES

Electrical Energy

• Energy caused by the movement of electrons;

• Energy stored in chemical bonds;

• Energy produced by friction;

• Energy released during nuclear reactions;

Magnetism

• The force exerted by magnets when they attract or repel each other.

• A type of energy that can be harnessed for electricity.

• The ability of materials to conduct heat.

• A phenomenon that occurs only in metals.

Solid

• a state of matter that has a definite shape and volume 

• a state of matter that flows and takes the shape of its container 

• a state of matter that has no definite shape but has a definite volume 

• a state of matter that can be compressed easily