Semester Review

Front

What is a closed circuit?

Back

A closed circuit is a complete electrical loop that allows current to flow, enabling devices like bulbs to light up.

Front

Which materials can conduct electricity?

Back

Conductors like copper and iron allow electricity to flow, while insulators like plastic and wood do not.

Front

What is an electromagnet?

Back

An electromagnet is a type of magnet created by an electric current flowing through a wire wrapped around a magnetic core, like iron.

Front

What is the difference between an element and a compound?

Back

An element is a pure substance made of only one type of atom, while a compound is made of two or more different types of atoms chemically bonded together.

Front

What does it mean that matter cannot be created or destroyed?

Back

It means that matter can only change forms; it can be transformed from one type to another but the total amount remains constant.

Front

What is contact force?

Back

Contact force is a push or pull that occurs when two objects are touching each other.

Front

What is gravity?

Back

Gravity is a force that attracts two bodies towards each other, commonly experienced as the force that pulls objects towards the Earth.

Front

What is friction?

Back

Friction is a force that opposes the motion of an object when it is in contact with another surface.

Front

What is a mixture?

Back

A mixture is a combination of two or more substances where each retains its own properties and can be separated by physical means.

Front

What is a chemical reaction?

Back

A chemical reaction is a process where substances (reactants) are transformed into new substances (products) with different properties.