Acids and Bases

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  • Created by: alana
  • Created on: 10-11-12 02:52
What is an electron
A negatively charged component of an atom, surrounding the atoms nucleus
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What is a proton
Component of the nucleus with a relative mass number of 1 and charge of +1
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What is a neutron
A component of the nucleus with a relative mass number of 1 and no charge
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What is a nucleus
The centre of an atom composed of protons and neutrons, possessing 99.9% of the mass
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What is the atomic number
The number of protons in the nucleus of an atom. Places it on the periodic table
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What is the atomic mass
The total number of protons and neutrons in the nucleus
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What is a compound
A substance composed of two or more elements
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Element
A class of substances that cannot be seperated into simpler substances by chemical means
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Ion
An electrically charged atom, or goup of atoms formed by the loss or gain of one or more electrons
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What is a cation
A positively charged atom or group of atoms caused by an atom or group of atoms losing one or more electrons
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What is an Anion
A negatively charged atom or group of atoms caused by losing one or more electrons
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What is an Isotope
atoms of the same element that have the same atomic number but different atomic mass (no. of neutrons)
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What is a particle
one of the extremely small constituents of matter. e.g. atoms molecules ions common particles
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What is Particle Theory
The theory that matter is made up of tiny particles which are constantly moving
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What is collision theory
The theory that in order for a chemical reaction to occur two or more particles must collide with sufficient energy and at the correct orientation
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What is concentration
is the measure of how much there is of a given substance
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What is surface area
Total area of exposed surfaces
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What is Kinetic Energy
energy that an object possesses by being in motion
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Reaction Rate
a measure of how fast reactants become products
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What is a catalyst?
a substance that speeds up a chemical reaction but is not used up in that reaction
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What is activation energy?
least amount of energy required to start a chemical reaction
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What is an atom?
is the defining structure of an element. cannot be broken by any chemical means
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Other cards in this set

Card 2

Front

What is a proton

Back

Component of the nucleus with a relative mass number of 1 and charge of +1

Card 3

Front

What is a neutron

Back

Preview of the front of card 3

Card 4

Front

What is a nucleus

Back

Preview of the front of card 4

Card 5

Front

What is the atomic number

Back

Preview of the front of card 5
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