Chemicals - Matter

This week in Chemicals, we are learning about Matter and Particle Theory. We have learnt lots of thing about Matter but what is Particle Theory?

Particle Theory

Particle Theory is about how particles in things such as solid, liquid and gas move and interact with each other. All matter is made out of particles, whether if its a solid, liquid or gas and all particles in a pure substance are the same. Ther is a space between all particles and the more solid an object is, the tighter the space between the particles are. All particles are always moving and liquids and gases move more freely than solids since solid particles can only vibrate instead of moving around freely on its own. There are attractive forces between particles and solids have the most attractive force because it holds all the particles together. Temperature affects the speed at which particles move, the more kinetic energy and heat are made the more it will affect the speed of which the particles move and the more cold and freezing the particles are, the more it slows down the kinetic energy, therefore an object solidifies.

Diffusion

Diffusion is the movement of particles from high concentration to low concentration. An example of Diffusion is when someone sprays perfume on themselves, the people near that person will smell the perfume first and other people further from the person will smell it last.

Experiment

We have used potassium permanganate to see if particles move slower or faster in cold or warm water.

I have noticed that particles move slower in cold water and particles move quicker in warm water.