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26 Cards in this Set
- Front
- Back
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Which 2 particles are found in the central part of the atom |
Proton Neutron |
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Which particle is found in the shells/orbits |
Electron |
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What is the name given to the central part of the atom |
Nucleus |
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What is the charge of an electron |
-1 |
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Which particle has a charge of 0 |
Neutron |
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Which particle has a very small mass |
Electron |
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In a neutral atom the number of protons equals the number of which other particleiso |
Electron |
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Isotopes of an element have the same number of which particle |
Proton |
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Isotopes of the same element have different numbers of which particle |
Neutron |
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What is the approximate radius of an atom |
1x10-10/0.1nm |
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Which separation technique is used to separate sand and water without heating |
Filtration |
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Which separation technique is used to separate 2 soluble coloured substances |
Chromatography |
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Which separation could be used to get pure water from salt water |
Distillation |
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Which separation technique is used to separate a mixture of liquids with different boiling points |
Fractional distillation |
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Which model of the atom suggests that it is a ball of positive charge with negative electrons stuck in it |
Plum pudding |
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In the early 1800s elements in the periodic table where arranged in order of what |
Atomic mass |
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Which scientist left gaps in his version of the periodic table |
Mendeleev |
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In the periodic table group 1 metals are also known as what |
Alkali metals |
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The halogens is another name for which group |
7 |
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Group 1 metals react with water to produce which gas |
Hydrogen |
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What happens to the reactivity of metals as you go down group 1 |
Increases |
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What happens to the reactivity of the halogens as you go down the group |
Decreases |
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What colour is fluorine gas |
Yellow |
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What colour is chlorine gas |
Green |
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What colour is bromine liquid |
Orange/brown |
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What happens to the boiling points of the noble gases as you go down the group |
Increases |
