Chemistry keywords Flashcards
NEUTRAL
A liquid with a pH value equal to pH7.
ACID
A liquid with a pH value less than pH7.
ALKALI
A liquid with a pH value greater than pH7.
ALUMINIUM
A very light metal used to make kitchen foil and saucepans.
ATOM
The smallest possible part of a element.
BUNSEN BURNER
A piece of apparatus that burns gas and is used to heat apparatus.
CHROMATOGRAPHY
A way of separating a mixture of coloured dyes or pigments such as found in ink.
COMPOUND
The substance formed when two or more elements are chemically combined together. eg HYDROGEN (element) + OXYGEN (element) = WATER
CONDENSE (condensation)
This is what happens when a gas turns to a liquid due to being cooled down. For example when steam touches a cold mirror.
COPPER
A pink metallic element. It is a very good conductor of heat and electricity. It is the metal that wires are usually made from.
DECOMPOSE (decomposition)
The chemical change that takes place when a compound is split apart into two (or more) simpler substances, usually by heating.
DISTILLATION
The name of the process used for obtaining the SOLVENT from a SOLUTION. Eg obtaining pure water from sea water.
ELEMENT
Chemical substances that contain only one kind of atom. They are listed in the Periodic Table.
EVAPORATION
The process for obtaining the solute from a solution by warming the solution and letting the solvent evaporate away.
FILTRATION
The process used for separating a SOLID from a LIQUID. Eg removing dirt from water