Semester exam Physical Science Review Part 1

Front

What are compounds?

Back

Compounds are substances made from atoms of two or more elements that are chemically joined together.

Front

Which of the following is not a compound: HCl, Cl, NaCl, CO2?

Back

Cl is not a compound; it is an element.

Front

Describe the particle movement in liquids.

Back

In liquids, particles move relative to each other but remain in contact.

Front

What is the energy of motion called?

Back

The energy of motion is called kinetic energy.

Front

Why is water not considered an element?

Back

Water is not an element because it is made of two different elements: hydrogen and oxygen.

Front

What is a homogeneous mixture?

Back

A homogeneous mixture is a mixture in which the composition is uniform throughout.

Front

What is a heterogeneous mixture?

Back

A heterogeneous mixture is a mixture in which the composition is not uniform throughout.

Front

What is the difference between an element and a compound?

Back

An element is a pure substance that cannot be broken down into simpler substances, while a compound is made of two or more elements chemically bonded.

Front

What is potential energy?

Back

Potential energy is the stored energy in an object due to its position or state.

Front

What is the definition of kinetic energy?

Back

Kinetic energy is the energy an object possesses due to its motion.