Chemistry Key Words

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Activation Energy
Minimum amount of energy needed to start reaction
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Alkane
Saturated hydrocarbon - CnH2n+2
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Alkene
Unsaturated hydrocarbon with a double bond - CnH2n
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Anhydrous
A mixture not containing water
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Aqueous solution
Mixture made by soluble substance being added to water
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Atom
The smallest part of an element
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Base
The oxide, hydroxide or carbonate of a metal that will react with an acid, forming a salt as one of the products
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Catalyst
A substance that speeds up a chemical reaction but remains chemically unchanged
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Compound
A substance made when two or more elements are chemically bonded together
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Covalent Bond
The attraction between 2 atoms that share one or more pairs of electrons
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Distillation
Separation of a liquid from a mixture by evaporation followed by condensation.
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Electrolysis
The breakdown of a substance containing ions by electricity.
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Element
A substance made up of only 1 type of atom. An element cannot be broken down chemically into any simpler substances.
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Endothermic
A reaction that takes in energy from the surroundings.
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Equilibrium
The point in a reversible reaction in which the forward and backwards rates of reaction are the same. Constant
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Exothermic
A reaction that gives out energy into the surroundings.
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Fractional Distillation
Separation of many substances in a mixture by heating, using the fact that they have different boiling points.
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Giant Covalent Bond
A structure with many atoms joined to each other by lots of strong, covalent bonds
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Ion
A charged particle
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Isotope
Same atomic number different mass number
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Mass number
The sum of the number of neutrons and protons in an atomic nucleus.
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Mixture
A substance consisting of two or more substances mixed together
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Molecule
Two or more atoms held together by covalent bonds.
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Product
A chemical substance formed as a result of a chemical reaction.
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Relative formula mass
The sum of the relative atomic masses of the elements as given in the formula for any non-molecular compound.
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Salt
A compound formed by replacing hydrogen in an acid by a metal
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VIscosity
A measure of a fluid's thickness or resistance to flow.
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Other cards in this set

Card 2

Front

Saturated hydrocarbon - CnH2n+2

Back

Alkane

Card 3

Front

Unsaturated hydrocarbon with a double bond - CnH2n

Back

Preview of the back of card 3

Card 4

Front

A mixture not containing water

Back

Preview of the back of card 4

Card 5

Front

Mixture made by soluble substance being added to water

Back

Preview of the back of card 5
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