Matter & Its Interactions PS.8.1

Front

What is matter?

Back

Matter is anything that has mass and takes up space.

Front

What are the three states of matter?

Back

The three states of matter are solid, liquid, and gas.

Front

What is a physical change?

Back

A physical change is a change that affects one or more physical properties of a substance without altering its chemical composition.

Front

What is a chemical change?

Back

A chemical change is a change that results in the formation of new chemical substances.

Front

What is an element?

Back

An element is a pure substance that cannot be broken down into simpler substances by chemical means.

Front

What is a compound?

Back

A compound is a pure substance made of two or more different types of atoms chemically bonded together.

Front

What are noble gases?

Back

Noble gases are a group of elements in Group 18 of the periodic table that are mostly nonreactive due to having a full valence shell.

Front

What is the significance of the atomic number?

Back

The atomic number indicates the number of protons in an atom's nucleus and determines the element's identity.

Front

What is the difference between a gas and a vapor?

Back

A gas is a state of matter that is not only in the gaseous state at room temperature, while a vapor is the gaseous state of a substance that is normally a solid or liquid at room temperature.

Front

What is density?

Back

Density is the mass of a substance divided by its volume, often expressed in grams per cubic centimeter (g/cm³).