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28 Cards in this Set
- Front
- Back
- 3rd side (hint)
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What sub atomic particles does the nucleus contain? |
Protons and neutrons |
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Which SA particle has ___ charge: 1. Positive 2. Neutral 3. Negative |
1. Proton 2. Neutron 3. Electron |
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What's different about isotopes from the usual element |
Different amount of neutrons |
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What's a compound? |
2 elements that are chemically bonded |
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What type of bond contains a metal and a non-metal |
Ionic |
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Losing or gaining electrons turns the atom into what? |
Ion |
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What's the difference between a mixture and compound |
Mixtures can be separate easily as they are not chemically bonded |
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What separation technique is used to separate an insoluble solid from a liquid |
Filtration |
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Two ways to separate soluble solids from solutions |
1. Evaporation 2. Crystallisation |
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What can be used to separate solutions? |
Distillation |
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What can be used to seperate a mixture of liquids (and in particular which one) |
Fractional distillation ( crude oil) |
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Who designed the plum pudding model |
JJ THOMPSON |
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Who proved the plum pudding model wrong and how? |
Rutherford, alpha particles scattering experiment |
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Who proposed the nuclear model |
Bohr |
Niel |
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Who discovered the proton |
Rutherford |
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What did Mendeleev do that made scientists accept his periodic table |
Leave gaps and predict new elements |
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How did the elements used to be arranged before Mendeleev |
By their atomic mass |
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What did Mendeleev change about the periodic table? |
The order of some of the elements to make their properties fit. This makes the groups have similar properties. Also left gaps |
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Properties of metals: (3) |
1. Strong and malleable 2. Conduct heat / electricity 3. High melting / boiling points |
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Group 1 trends DOWN the group:(3) |
1. Increasing reactivity 2. Lower melting/boiling points 3. Higher RAM |
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What does a reaction with group 1 elements and water produce |
Hydrogen, and a vigorous reaction |
Gas |
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What gas do group 1 metals react with to form metal ___ |
Oxygen, oxides |
Breath |
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Group 7 trends DOWN group:(3) |
1. Less reactive 2. Higher melting / boiling points 3. Higher RAM |
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What can reactive halogens do to less reactive ones |
Displace |
D_________ |
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What is special about group 0 elements |
Inert, unreactive |
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Pattern down group 0: |
Boiling points increase |
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:) |
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What is the radius of an atom? |
1x10^-10 |
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