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45 Cards in this Set
- Front
- Back
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How do you find the number of protons? |
the atomic number |
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How do you find the number of neutrons? |
Mass number - atomic number |
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How do you find the number of electrons? |
The atomic number |
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Where are protons, neutrons and electrons found in a atom? |
nucleus (centre of atom) Electrons orbit the nucleus |
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What is a molecule? |
Group of atoms bonded together |
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What is a compound? |
Composed of two or more seperate elements |
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What is an isotope? |
Same element but with different mass ( more neutrons) |
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What is the mass of an atom? |
Mainly determined by number of protons and neutrons in nucleus |
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What is relative isotopic mass? |
Mass of individual isotope |
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Sighs of reaction? |
Colour change, gas produced, engery change, soild formed. |
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Speeds up reaction ? |
Increase temperature, increase concentration, increase surface area or add a catalyst |
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What is a protons charge? |
1 positive |
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What's a protons mass? |
1 a.m.u |
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What's an neutrons charge? |
No charge |
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What's a neutrons mass? |
1 a.m.u |
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What's an electrons charge? |
1 negative |
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What's an electrons mass? |
No mass |
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Why are atoms neutral? |
number of protons = number of electrons |
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What is a covalent compound? |
two nonmetals, sharing |
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What's an ionic compound? |
one metal and one non-metal, not sharing |
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What’s exothermic? |
A reaction that increases in temperature |
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What’s exothermic? |
A reaction that increases in temperature |
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What’s endothermic? |
A reaction that decreases temperature |
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What’s exothermic? |
A reaction that increases in temperature |
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What’s endothermic? |
A reaction that decreases temperature |
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What's the salt name for hydrochloric acid? |
Chloride |
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What's the salt name for nitric acid? |
Nitrate |
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What's the salt for sulphuric acid? |
Sulphate |
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What's the salt for sulphuric acid? |
Sulphate |
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What type of reaction occurs between an acid and an alkali? |
Neutralisation |
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What's the salt for sulphuric acid? |
Sulphate |
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What type of reaction occurs between an acid and an alkali? |
Neutralisation |
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What name is given to a substance of pH 7? |
Neutral |
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What's the salt for sulphuric acid? |
Sulphate |
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What type of reaction occurs between an acid and an alkali? |
Neutralisation |
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What name is given to a substance of pH 7? |
Neutral |
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What name is given to a substance of pH more than 7? |
Alkali |
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What's the salt for sulphuric acid? |
Sulphate |
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What type of reaction occurs between an acid and an alkali? |
Neutralisation |
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What name is given to a substance of pH 7? |
Neutral |
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What name is given to a substance of pH more than 7? |
Alkali |
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What name is given to a substance of pH less than 7? |
Acid |
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What is the name given to the reactive metals in Group 1 of the periodic table? |
Alkali metals |
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What is the name given to the reactive metals in Group 1 of the periodic table? |
Alkali metals |
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What name is given to the unreactive gases in group 8 (or group 0) on the periodic table? |
Noble gases |
