08 / 06 Thursday Kaupapa: Observe and discuss more evidence that supports Particle Theory

Do you remember? What are the three physical states of matter? What is particle theory? Define “particles”

Particle Theory Everything is made up of tiny particles. Particles are defined as “the smallest bits” of a substance. The particles are active (they are constantly moving).

Solid Liquid Gas

Particles in a solid – animation

Evidence of Particle Theory

Solid Liquid Gas

Particle Theory Everything is made up of tiny particles. Particles are defined as “the smallest bits” of a substance. The particles are active (they are constantly moving).

Particle Theory (contd.) When the particles absorb heat (when they are heated), they become more active.

Make particles more active

“Particle Theory” Are you convinced?

More Evidence: Air Expansion

Then why does the balloon expand? Because there is no air going in or coming out of the balloon and the bottle, the number of particles inside is not changed. Then why does the balloon expand? Because – when the particles are heated, they become ______ ______ and apply more pressure from inside.

More Evidence: Collapsing Cans

What have we learnt today? What is particle theory? Describe some evidence that supports the theory

Demo: Oobleck