Chemistry Chapter 1
- Created by: elliebaxter
- Created on: 22-12-16 09:28
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- Chemistry Chapter 1
- States of matter
- solids
- Particles do not vibrate and in fixed arrangement
- Liquids
- Particles close together and random arrangement
- Gas
- Particles can move around and in random arrangement, the higher the temp. the more they move (increases pressure)
- Melting and boiling absorb energy, freezing and condensing loose energy
- solids
- Evidence for particles
- Diffusion
- Bromine vapour in air - full tube becomes orange
- Potassium manganite crystals in water - purple colour spreads through water
- Diffusion takes place faster in a gas than a liquid
- ammonia and hydrogen chloride =ammonium chloride - ring of smoke seen in the middle of tube
- Diffusion
- Atomic Structure
- Atoms with the same number of electrons in their outer shell, react similarly
- Proton = +1 charge - mass = 1 Neutron = 0 charge - mass = 1 Electron = -1 - mass = very small
- Isotopes have different numbers of neutrons with identical chemical properties but different physical properties
- States of matter
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