Unit 2 Test: The Structure of Matter

Front

What is the structure of matter?

Back

Matter is made up of particles, which can be atoms or molecules, that are in constant motion and interact with each other.

Front

What happens to particles in a liquid when thermal energy is added?

Back

The particles gain kinetic energy, move faster, and may eventually change into a gas.

Front

What is the difference between a compound and a mixture?

Back

A compound is a substance formed when two or more elements chemically bond together, while a mixture is a combination of two or more substances that retain their individual properties.

Front

What is kinetic energy?

Back

Kinetic energy is the energy of motion; the faster an object moves, the more kinetic energy it has.

Front

What occurs during condensation?

Back

Condensation is the process where gas turns into a liquid as thermal energy is removed.

Front

What is the arrangement of particles in a solid?

Back

In a solid, particles are closely packed in a fixed arrangement and can only vibrate in place.

Front

How do particles behave in a gas?

Back

In a gas, particles are far apart, move freely, and fill the entire volume of their container.

Front

What is thermal energy?

Back

Thermal energy is the total kinetic energy of particles in a substance, related to temperature.

Front

What is the process of vaporization?

Back

Vaporization is the process where a liquid turns into a gas when thermal energy is added.

Front

What is a molecule?

Back

A molecule is a group of two or more atoms bonded together, representing the smallest unit of a chemical compound.