Matter Examples in Chemistry

Start with the recap, study the fully worked examples, then use the practice problems to check your understanding of Matter.

This page combines explanation, solved examples, and follow-up practice so you can move from recognition to confident problem-solving in Chemistry.

Concept Recap

Anything that has mass and takes up space (has volume), including solids, liquids, gases, and plasma.

Everything you can touch, see, or weigh is matter. Air is matter too — you just can't see it.

Read the full concept explanation →

How to Use These Examples

  • Read the first worked example with the solution open so the structure is clear.
  • Try the practice problems before revealing each solution.
  • Use the related concepts and background knowledge badges if you feel stuck.

What to Focus On

Core idea: Matter is the 'stuff' the universe is made of. It exists in different states and can be classified by its properties.

Common stuck point: Energy (like heat or light) is not matter — it has no mass or volume.

Worked Examples

Example 1

easy
Define matter and give three examples of things that are matter and three that are not.

Solution

  1. 1
    Matter is anything that has mass and occupies space (has volume).
  2. 2
    Examples of matter: water, air, iron — all have measurable mass and volume.
  3. 3
    Not matter: light, heat, sound — these are forms of energy, not substances.

Answer

\text{Matter has mass and volume. Energy (light, heat, sound) is not matter.}
The distinction between matter and energy is fundamental in science. Matter can exist in different states (solid, liquid, gas) and can undergo physical and chemical changes.

Example 2

medium
Classify each as a physical or chemical property: (a) boiling point, (b) flammability, (c) color, (d) reactivity with acid.

Practice Problems

Try these problems on your own first, then open the solution to compare your method.

Example 1

easy
Is air considered matter? Justify your answer.

Example 2

hard
A student claims that heat and light are forms of matter because they can be detected and measured. Evaluate this claim using the definition of matter.
← Back to Matter Practice Mode