5340054
Description
Flashcards by Farha Idrees, updated more than 1 year ago
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Created by Farha Idrees
almost 8 years ago
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| Question | Answer |
| Name an unreactive metal. | -Gold -Silver -Copper |
| Give an example of a very reactive metal. | -Potassium -Francium -Rubidium |
| a) What type of bubbles form when most metals react with acids? b) How can we use the answer to (a) to help us compare the reactivity between different metals? c) Give an example between two metals for (b). | a) Hydrogen bubbles are formed when metals react with acids. b) We can use the rate of bubbling to compare the reactivity between metals- reactive metals bubble more faster than unreactive metals. c) For example, we know that lithium is less reactive than potassium because it has a slower rate of bubbling than potassium. |
| 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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