7th Grade Mid-Term Exam Review

This set of flashcards covers key vocabulary and concepts from the 7th grade mid-term exam review, focusing on thermal energy, motion, and chemistry.

Conduction

Heat transfer that has to be touching.

Convection

Heat transfer through fluids.

Radiation

Heat transfer through waves.

Thermal Equilibrium

When heat flow stops.

Insulator

Resists flow of energy.

Conductor

Strengthens heat flow.

Kinetic Energy

The transfer of motion.

Displacement

Change of direction.

Balanced Force

Equal forces acting in different directions.

Unbalanced Force

Forces acting opposite of each other.

Net Force

Total force acting on an object.

Acceleration

Change in velocity.

Speed

Distance traveled over time.

Velocity

Change of displacement over time.

Solute

The substance being dissolved.

Solution

A homogeneous mixture containing a solvent and a solute.

Chemical Change

A process that alters the chemical composition of a substance.

Physical Change

A change that does not affect the chemical composition.

Saturated Solution

A solution that holds the maximum amount of dissolved solute.

Atom

The smallest unit of an element.

Element

A substance that cannot be broken down any simpler.

Compound

Two or more different elements combined.

Molecule

Two or more atoms bonded together.