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Chemistry revision (Properties of Metals (Make oxides when reacted with…
Chemistry revision
Separating techniques
Compound
two or more different elements joined together
Mixture
two or more substances that aren't chemically joined together
Dissolve
When a substance disappears in liquid
Separation by evaporation
Evaporating a substance into a liquid
Chromatography
Separates inks
it allows us to identify unidentified chemicals at a crime scene
The three states of matter
Solid
Particles hardly move, just vibrate
Strongly bonded together
Little energy/space between them
Arranged in a fixed pattern
Liquid
The particles vibrate and move
Weakly bonded
Not in a regular pattern
Gas
Move with speed
little bonding
lots of energy and space between them
Properties of non-metals
Brittle
Dull
Poor conductors
Insulator
non magnetic
Can be found in the periodic table
Non-metal oxides are acidic
Low denseties
Low melting and boiling points
React with oxygen to make oxides
Properties of Metals
Make oxides when reacted with oxygen
In periodic table
High denseties
Good conductors
Malleable
Magnetic
Strong & tough
Ductile
Sonorous
High melting & boiling points
make alloys when mixed with other metals
Shiny when polished/freshly cut
Naming elements
Atom
A tiny particle
Smallest part of a chemical element that can exist
Element
A substance that cannot be broken down into simpler substances