Matter

Learning goals We are learning about the states of matter. We are learning about the particle theory of matter.

Fireworks exploding in the distance … Colours!!!

Matter has many forms Matter: anything that has mass and volume. Mass: a measure of the quantity of matter in an object. kilograms (kg) or grams (g). Volume: a measure of how big an object is or how much space a fluid takes up. litres (L) or millilitres (mL).

Changes of state Solids, liquids, and gases are called states of matter.

Matter Changes melting point: temp at which a solid turns into a liquid (water 0°) reverse process is the freezing point (same temp as MP) boiling point: temp at which a liquid turns to a gas condensing point: temp at which a gas changes into a liquid (same temp as BP)

Water freezing demo

Particle theory All matter is composed of very tiny objects called particles. All particles have spaces between them. Particles present in matter are always in motion (move faster when heated). The particles in a substance attract each other.

Particles and heat Particles move faster when heated, and slower when cooled For a given substance such as water, the state it is in is related to its temperature.

Quick lab activity Have fun. Learn. Follow safety procedures. Clean up when finished.

Learning goals We are learning about the states of matter. We are learning about the particle theory of matter.

Please complete What are two features that all forms of matter have? Use the particle theory of matter to explain what makes a liquid different from a solid of the same substance. Compare the amount of space between particles of a gas with that of a liquid of the same substance. What is the effect of adding heat to the particles in a sample of matter? What is the difference between the melting of water and the melting point of water?