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29 Cards in this Set
- Front
- Back
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What does the pH scale measure? |
The acidity of a substance |
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What colour does an acid turn using indicator |
Red, orange or yellow |
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What colour does an alkali turn using an indicator |
Blue or purple |
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What colour does a neutral substance turn an indicator |
Green |
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Give an example of an acid |
Vinegar |
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Give an example of an alkali |
Baking soda |
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Is water an acid, neutral or an alkali |
Neutral |
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Will a substance with a high concentration of hydrogen ions have a high or low pH |
Low. They are acids |
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Do acids contain hydroxide ions? |
Acids contain hydroxide ions but the concentration of hydrogen ions will be greater |
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Do alkalis contain more hydrogen or hydroxide ions |
Hydroxide |
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Can water conduct electricity |
Mostly but only if the water has enough ions |
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Acids conduct electricity because... |
They have H+ (hydrogen) ions |
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Alkalis conduct electricity because... |
They have OH- (hydroxide) ions |
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Pure water has equal concentrations of what |
H+ and OH- |
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What does diluting an acid or an alkali do to it's pH value |
Diluting an acid increases it's pH while diluting an alkali decreases it's pH |
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What kind of solutions do non metal oxides form when they dissolve in water |
Acidic |
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What kind of solutions do metal oxides form when they dissolve in water |
Alkaline |
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The pH of a solid metal oxide is what |
Impossible to measure |
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What type of charge does hydroxide have |
Negative |
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What happens when sulfur dioxide is mixed in the air |
Acid rain |
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Limestone can be used to do what to acid rain |
Neutralise it |
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Which elements do the fuels we burn contain |
Carbon, sulfur and nitrogen |
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What is formed during neutralisation reactions |
Salts |
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When naming a salt, where does the first name come from |
The metal used in the reaction |
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When naming a salt, where does the second name come from |
The acid used in the reaction |
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If the metal sodium and the acid hydrochloric reacted, what would their salt name be |
Sodium Chloride |
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Which metal and acid were used to form magnesium sulfate |
Magnesium and sulfuric acid |
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Nitric acid + aluminium would give you which salt |
Aluminium Nitrate |
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When an acid reacts with a metal carbonate which three products does it create |
A salt, carbon dioxide gas and water |
