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7G Science revise
7G Science Revision States of Matter gas, liquid, solid
| Question | Answer |
|---|---|
| What are the 3 states of matter | Solid, Liquid and Gas |
| Liquids flow but cannot be squashed true or false | true |
| what is particle theory | a theory that explains the different properties of solids, liquids and gases, this is also called particle model |
| what is pressure | air particles hitting another object |
| why can't we feel air pressure? | because we're so used to it |
| how do you make a balloon stop expanding | when the pressure inside the balloon is balanced with the pressure outside the rubber stops stretching |
| what is a vacuum? | when you suck all the air out of something, it is also a space where there are no particles at all |
| true or false, squashed gas and normal gas have the same mass | true |
| what is gas particles held in? | aether |
| what is diffusion? | when particles spread and move on their own and even out the spaces, it also happens in liquids |
| does a solid change shape? | no |
| do particles stay very still | no they jiggle but you can't see them unless with a microscope |
| how do ice cubes melt? | they a literally boxes of water, when something is heated the particles move faster, the ''box'' encasing the water inside breaks from the force of the particles bumping in the ''wall'' of it then the water spills out |
| how do you measure the volume of an object? | first you have to find out the density (mass/volume). volume is measured in cubic centimetres (cm3) |
| name the odd one out carbon dioxide, carbon monoxide, water, lemon juice, brick | brick |
Created by:
tnguyen17
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