Chemistry Keywords

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What is an Acid?
A substance containing hydrogen that has a pH of less than 7
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What is Activation Energy?
The energy required to start a chemical reaction.
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What is Alcohol?
A homologous series with an -OH functional group.
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What is an Alkali?
A substance containing oxygen that has a pH of more than 7 and less than 14.
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What is an Alkane?
A unsaturated hydrocarbon which has a general formula of CnH2n+2.
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What is an Alkene?
A saturated hydrocarbon with a double bond between the carbon atoms. General formula is CnH2n.
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What is an Alloy?
A mixture of two or more metals which aren't chemically bonded together.
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What is an Anhydrous?
A substance without water in it.
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What is an Aqueous Solution?
A solution made by dissolving a substance into water.
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What is an Atom?
The smallest part of an element.
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What is an Atomic Number?
The number of protons in nucleus of an element.
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What is Avogadro's Constant?
The number of defined particles in one molecule of the substances
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What is a Base?
An alkaline compound that reacts with a compound to form salts.
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What is Bond Energy?
The energy required to break a bond or the energy released when a new bond is made.
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What is Bonding?
The method through which atoms are held together in a substance.
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What is a Catalyst?
A substance that increases the rate of reaction.
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What is Chromatography?
The process of separation of different liquids via filter paper.
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What is the Collision Theory?
The idea that increasing the number of collision between particles will increase the rate of reaction.
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What is Concentration?
The amount of one type of substance in a medium.
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What is Condensation?
The change of state from gas to a liquid.
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What is a Conductor?
a medium or volume that allows heat or electricity to pass through it.
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What is Covalent Bonding?
The sharing of electrons between two atoms when bonding together.
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What is Cracking?
The breaking down of an organic compound or hydrocarbon into a smaller compound.
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What is Crystallisation?
The formation of crystals when a saturate solution is left to cool.
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What is Density?
The mass of a substance divided by its volume.
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What is a Displacement Reaction?
A reaction when a more reactive element takes place of a less reactive element.
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What is Distillation?
A method of separating a liquid from a mixture by boiling and condensing.
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What is Electrolysis?
The break down of an ionic compound using electricity.
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What is an Electron?
A small charged particle found rotating around the nucleus of an atom.
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What is an Element?
A simple substance containing only one type of atom.
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What is Endothermic?
A chemical reaction which takes heat from the surroundings.
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What is Evaporation?
The charge of state from liquid to gas.
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What is Exothermic?
A chemical reaction which gives out heat to the surroundings.
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What is Fermentation?
The breakdown of glucose by yeast without the use of oxygen, producing ethanol and carbon dioxide.
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What are Fossil Fuels?
A fuel formed from the remains and skeletons of dead matter from over a million years ago.
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What is Fraction?
A group of molecules with a similar boiling point.
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What is Freezing?
The change of state from liquid to gas.
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What is Fuel?
A substance that releases energy when combusted.
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What is a Functional Group?
A group of atoms which are responsible for the characteristics and chemical reactions for the homologous series.
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What is Galvanising?
Coating a metal with a protective layer of zinc.
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What is a Group?
A vertical column of elements in the periodic table.
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What is the Haber Process?
The industrial process of the production of ammonia from hydrogen and nitrogen.
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What is a Hydrocarbon?
A compound containing only carbon and hydrogen.
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What is an Insulator?
A medium or substance that does not conduct heat or electricity.
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What are Isomers?
Substances with the same molecular formula but a different arrangement and order of atoms.
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What are Isotopes?
Atoms of the same element with a different number of neutrons.
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What is Limewater?
Calcium Hydroxide solution used as a test for the presence of carbon dioxide.
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What is Malleable?
Can be bent or hammered into shape.
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What is Litmus?
An indicator which shows whether a substance is acidic or alkaline.
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What is the Mass Number?
The number of protons and neutrons in an atom.
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What is Melting?
The change of state from solid to liquid.
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What is a Mole?
The relative formula mass of a substance in grams.
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What is a Monomer?
A molecule that can combine to form a polymer.
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What is Neutralisation?
The reaction of an acid and an alkali to form a neutral product.
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What is a Noble Gas?
An nonreactive element found in Group 0 of the periodic table.
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What is the Nucleus?
The central section of an atom which contains protons, neutrons and electrons.
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What are Ores?
Rocks containing traces of metal or metal compounds within them.
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What is Oxidation?
Loss of electrons in a chemical reaction.
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What is an Oxidising Agent?
The substance which adds oxygen to another substances.
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What is a Period?
A horizontal row of elements in the periodic table.
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What is the Periodic Table?
The arrangement of elements in the order of increasing atomic number in a table.
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What is the pH Scale?
A scale which shows how acidic or alkaline a substance is.
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What is Polymer?
A substance which is made up of loads of small molecules joined together.
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What is Polymerisation?
The chemical reaction combining monomers to form polymers.
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What is a Proton?
A charged particle found in the nucleus of an atom.
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What is Qualitative Analysis?
A method of finding out the elements present in an unknown substance via a series of chemical tests.
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What is Rate of Reaction?
The amount of product made in a certain amount of time.
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What is the Reactivity Series?
A list of elements ordered in terms of increasing reactivity.
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What are Redox Reactions?
Reactions where both reduction and oxidation occur.
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What is a Reducing Agent?
A substance that removes oxygen from another substance.
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What is Reduction?
Gain of electrons in a chemical reaction.
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What is Relative Atomic Mass?
The mass of an atom using the universal scale.
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What is a Reversible Reaction?
A reaction that can be reversed so the products can be turned back into the reactants.
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What is Rust?
The chemical erosion of iron and steel.
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What are Salts?
Compounds formed when the hydrogen in an acid is displaced by a metal.
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What is Solubility?
The amount of solute that dissolves in a given quantity of solvent
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What is a Solute?
A substances that can be dissolved.
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What is a Solution?
A mixture of a solute and a solvent.
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What is a Solvent?
A substance that dissolves a solute.
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What is Thermal Decomposition?
The breakdown of compounds via heat.
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What is a Universal Indicator?
A mixture of indicators combined as one that can be used to measure the pH of a substance.
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What is Yield?
The amount of product gained from a reaction.
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Other cards in this set

Card 2

Front

The energy required to start a chemical reaction.

Back

What is Activation Energy?

Card 3

Front

A homologous series with an -OH functional group.

Back

Preview of the back of card 3

Card 4

Front

A substance containing oxygen that has a pH of more than 7 and less than 14.

Back

Preview of the back of card 4

Card 5

Front

A unsaturated hydrocarbon which has a general formula of CnH2n+2.

Back

Preview of the back of card 5
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