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15 Cards in this Set
- Front
- Back
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What kind of charge and ions are found in alkalis? |
Negative charge & hydroxide ion |
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What kind of charge and ions are found in acids?
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positive charge and hydrogen ion |
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What do metals create when they react with acids? |
Salt and a hydrogen gas |
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Acid+alkali= |
water+salt |
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How do strong acids ionise? |
Completely |
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How do weak acids ionise? |
Partially |
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What is an aqueous solution? |
a substance dissolved in water |
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How can iron be extracted from iron ore ? |
extracted using carbon. |
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What is a displacement reaction? |
when a more reactive element displaces a less reactive element from its compound |
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How can aluminium be extracted from aluminium ore? |
extracted using electricity. this is electrolysis. |
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What is oxidation? |
when an element reacts with the air it oxidises |
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What does an alkali create when it reacts with water? |
a hydrogen gas and a metal hydroxide |
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What is an endothermic reaction? |
A reaction that takes in heat from its surroundings |
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What is an exothermic reaction? |
A reaction that lets out heat |
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What is an ion ? |
individual particles broken down from a substance dissolved in water. |
