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Flashcards by potet13, updated more than 1 year ago
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Created by Farha Idrees
about 9 years ago
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Copied by potet13
about 9 years ago
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| Question | Answer |
| Name an unreactive metal. | -Gold -Silver -Copper |
| Give an example of a very reactive metal. | -Potassium -Sodium -Calcium |
| a) What type of bubbles form when most metals react with acids? | a) Hydrogen bubbles are formed when metals react with acids. |
| What is a displacement reaction? | When a more reactive metal will displace a less reactive metal from its compound. |
| What two types of reactants does a displacement reaction contain? | - a metal - the compound of a different metal |
| What is the evidence of the reaction taking place? | -the more reactive metal disappears as it forms a solution -the less reactive metal coats the surface of the more reactive metal -there can sometimes be a change in colour or temperature |
| What happens when iron and copper sulphate react? (how the metals looked like at the start, how they ended up, and the word equations) | -The copper sulphate starts off as a bright blue, then, after the reaction, it ends up as a pale blue. -The iron starts off as silver, then ends up brown copper coloured coating -iron + copper sulphate = copper + iron sulphate |
| Why does iron replace copper, in the copper sulphate compound, when they react? | Iron replaces copper as it is simply more reactive. |
| (This is the order of reactivity- from most to least reactivity- aluminium, zinc, iron, lead, copper) Write the products:a) aluminium + zinc sulphate b) copper + lead sulphate c) zinc + iron sulphate | a) aluminium + zinc sulphate = zinc + aluminium sulphate b) copper + lead sulphate = the same since copper is less reactive than lead c) zinc + iron sulphate = iron + zinc sulphate |
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