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20 Cards in this Set
- Front
- Back
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What is an element? |
An element is a substance mad of only one type of atom |
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Where are protons, neutrons and electrons positioned in an atom? |
Protons - nucleus Neutrons - nucleus Electrons - outer shells what |
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What are the relative charges of a Proton, a Neutron and a Electron? |
Proton - +1 Electron - -1 Neutron - 0 |
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What are protons, neutrons and electrons called? |
Sub-atomic particles |
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What are protons, neutrons and electrons called? |
Sub-atomic particles |
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How do atoms have no overall charge? |
The number of electrons are equal to the number of protons and therefore the charges balance out, meaning there is no overall charge. |
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What is the atomic number of a atom? |
The number of protons in an atom |
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What is atomic mass? |
The sum of protons and neutrons in an atom |
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What are the number of protons,neutrons and electrons in oxygen? |
Protons - 8 Electrons - 8 Neutrons - 16-8 = 8 |
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What is the rule for electronic structures of atom diagrams? |
Fill the inner shell first in a 2,8,8,2 order |
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What are the group 1 metals called? How many electrons are in the router shell? |
- Alkali metals - 1 electron in their outer shell |
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When alkali metals react with water what do they produce? |
A metal hydroxide + hydrogen |
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When alkali metals react with water what do they produce? |
A metal hydroxide + hydrogen |
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How do alkali metals react with oxygen? |
They burn vigorously when heated with oxygen |
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When alkali metals react with water what do they produce? |
A metal hydroxide + hydrogen |
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How do alkali metals react with oxygen? |
They burn vigorously when heated with oxygen |
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What do alkali metals produce when they react with oxygen? |
Metal oxides |
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What are the group 0 elements called? |
The noble gases |
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Why are the noble gases unreactive? |
They have full outer shells/stable arrangements of electrons |
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When atoms share pairs of electrons what type of bond is it? |
A covalent bond (Molecules) |
