Chemistry

Solid: Solid is like ice which the shape can not be change and it takes amount of spaces and can't be compressed. Most solid can not be poured but sugar, salt and sand can be poured.

Liquid: Liquid is like water which if pour means that it will take up the space of the thing you are pouring into.

Gas: Gas spread out and it will not stay in something that has space unless it has something that stop it from coming out like a lid. Gas are something that can not be seen but it depends what kind of gas it is and gas unlike liquid and solid is easily compressed.

Particle: Particle is like a tiny small bits of something.

Compress: Comress is an action to squeeze something or to make it have less space.

Expand: Expand is when something gets bigger.

Contract: Contract means to draw something together.

Condensation: Condensation is the action of making something smaller or shorter.

Freezing: Freezing means extremely cold.

Melting: Melting mean that it is becoming a liquid from being heated or warmth weather.


 * Solid**: The particles in the solid is tightly packed together.


 * Liquid**: The particles in the liquid is not really tightly together but it is close to each other and the particle can easily slide over each other.


 * Gas**: The particles in gas are throughly spread from each other.


 * Solid**: If you touch a solid object you can feel that it is hard because of the particle packing into each other which make it strong.(eg. Hard Cover Book)


 * Liquid**: When we put our had into water which is liquid the water will rise up abit because our hand takes the liquid space and the particle of the liquid will pop out which make the water rises.(eg. Water)


 * Gas**: Gas is like air which the air hit against our face and it feel like wind.(eg. Wind and Air)

__ QUESTIONS  __ Sublimation is a change of solid turning into a gas when it is not going turning into a liquid.
 * What is sublimation**?

If we increased the pressure of the air and block the space to escape the movement of the particles of the liquid will decresed and if they will turn into gas they need more heat to have more energy.
 * Supposing you increased the pressure of the air above the boiling liquid. What would happen to the boiling point of the water?**

When you are boiling a water up the mountain it will taste bad because up the mountain the pressure is lower and the boiling point will also be low because the boiling point depends on the air pressure so it won't be boiling.
 * Imagine that you are trying to boil water for a cup of tea up a mountain. Why would the cup of tea be fairy horrible?**

When liquid turns into solid it expand this is because ice are more dense and when the ice is frozen space is create between the water molecule.
 * Does water contract or expand on changing from a liquid to a solid?**