Term
| which metal in the reactivity series is hardest to remove from its ore ? |
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Definition
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Term
| list the reactivity series in the correct order |
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Definition
potassium,
sodium,
calcium,
magnesium,
aluminium,
carbon,,
zinc,,
iron,
lead,
hydrogen,
copper,
silver,
gold. |
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Term
| name six properties of alkalis |
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Definition
have a high pH,,,
often feel soapy,,,
can be corrosive,,,
they neutralise acids to make salts,,
they are soluble bases,,,
are usually oxides, hydroxides or carbonates,,, |
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Term
| name eight propoties of acids |
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Definition
have a low pH,,,
can kill some cells,,,
can be corrosive,,,
are neutralised by bases,,
they make hydrogen,,,
make carbon dioxide,,,
acid have hydrogen in there names,,, |
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Term
| name the 3 most reactive metals |
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Definition
potassium ,,
sodium ,,
calcium . |
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Term
complete the sentence .....
metals above ______ in the reactivity series will always react with water to produce hydrogen. |
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Definition
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Term
| what is the equation for metals reactiong with air ? |
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Definition
| metal + oxygen ---> metal oxide |
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Term
what will the out come be with ...
iron + copper sulphate ---> ?? |
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Definition
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Term
| what do all these rocks have in comman limestone, chalk, and marble ? |
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Definition
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Term
| potatoes like a pH of around 5.0 - 5.5 what is this an acid or an alkalis ? |
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Definition
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Term
complete this sentence ...
the _____ the reactivity the less visible the reaction |
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Definition
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Term
| how would you measure the pH of a unknown liquid ? |
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Definition
using a universal indicator .......
an indicator is a dye which changes colour depending on whether a liquid is an acid or an alkali. |
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Term
| is washing up liquid an acid or an alkaline? |
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Definition
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Term
| If on the pH scale it goes dark red, is it a strong acid, weak acid,strong alkaline or weak alkaline? |
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Definition
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Term
| What is the equation of for neutralisation? |
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Definition
| Acid + base = a salt + water |
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Term
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Definition
| neutralisation is a displacement reaction |
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Term
| how can you tell if a metal has reacticted with the oxygen in the air by what it looks like and by its name? |
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Definition
| in its name it will have oxide ,,,,,, and it will have a dull layer on the surface |
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Term
| what happens if the soil has the wrong pH ? |
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Definition
| it can reduce plant growth |
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Term
| what happens if acid rain reacts with calcuim carbonate? |
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Definition
| it cause a chemical reaction and it into calcium, salt, water and carbon dioxide |
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Term
| why do we use gold and silver jewellery ? |
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Definition
| because they are not very reactive metals |
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Term
| name two metals that react with steam? |
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Definition
| can be from magnessium ,,,,,, aluminium ,,,,,,zinc ,,,,,, iron |
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