Explaining Properties of Matter
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Chemical Properties
A property that can be observed only by changing the identity of a substance
Physical Properties
A property that can be observed without changing the identity of a substance
Appearance
What something looks like
Thermal Conductivity
How easily heat can pass through a material
Electrical Conductivity
How easily electricity can pass through a material
Magnetic
A material that gets attracted to a magnet
Malleability
How easy it is to bend a material
Ductility
How easy it is to draw a material into a wire
Density
Mass divided by volume. How much matter there is in a given volume.
Hardness
How well a material resists deformation
Lustre
How well a material reflects light. How shiny it is.
Alloy
A mixture of two or more metals
Acid
A chemical that produces hydrogen ions when dissolved in water.
Alkali
A chemical that produces hydroxide ions when dissolved in water.
Neutral
A solution that has a pH of 7.
pH
A measure of how acidic or alkaline a solution is
Indicator
A substance that changes colour in solutions of different pH
Solution
A mixture of a solute (solid) dissolved in a solvent (liquid). E.g. salt water
Concentration
The amount of a substance dissolved in water
Nutrealisation Reaction
A reaction between an acid and an alkali resulting in a neutral solution.