GCSE AQA Trilogy Separate Science Chemistry: Atoms
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20 Terms
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Compound
A substance made up of atoms of two or more different elements joined by chemical bonds. For example, water.
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Element
A pure substance made of only one kind of atom For example, a diamond is made of pure carbon!
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Plum Pudding Model (Thomson)
JJ Thomson's atomic model which depicts a positively charged space containing negatively charged electrons
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Electrons
Negatively charged particles
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Proton
A particle that has a positive charge and is found in the nucleus of an atom
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Sodium
Atomic Number: 11
Symbol: Na
Symbol: Na
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Aluminium
Atomic Number: 13
Symbol: Al
Symbol: Al
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How many neutrons does an aluminium atom have?
14
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How many electrons does an aluminium atom have?
13
10
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What is the mass number of lithium?
7
11
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How many electrons does a lithium atom contain?
3
12
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How many protons are there in an atom of potassium?
19
13
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How many neutrons are there in an atom of potassium?
20
14
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Can you draw a sodium atom?
Sodium
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How many electrons does a sodium atom have?
11
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What is the electron structure of a sodium atom?
2.8.1
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How many electrons are there in an aluminium atom?
13
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What is the electron structure of aluminium?
2.8.3
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What group can aluminium be found in?
Aluminium is a group 3 element
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What is the atomic number of aluminium?
13
