701229
Descrição
FlashCards por jennifersnowbell, atualizado more than 1 year ago
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Criado por jennifersnowbell
aproximadamente 10 anos atrás
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| Questão | Responda |
| List the Reactivity Series in order. | Potassium, Sodium, Calcium, Magnesium, Aluminium, Zinc, Iron, Lead, Copper, Silver, Gold |
| More reactive metals are harder to extract from their ores. What do they need? | Electrolysis- when chemical energy breaks down the ores |
| Why does aluminium seem so unreactive when it's high up in the reactivity series | When aluminium reacts with oxygen, it makes a protective oxide layer which stops further reactions. |
| What will happen to most metals when they react with air? | They tarnish; makes a dull layer of metal oxide on surface. |
| What happens when magnesium, lead and silver is burnt in air? | Magnesium- burns violently Lead- reacts slowly Silver- no reaction |
| Metal+Oxygen= | Metal Oxide |
| More reactive metals react vigourously with ........ water to produce ........ | cold, hydroxides |
| Less reactive metals react quickly with ...... to produce....... | steam, oxides |
| Metal + Water = Less Reactive Metal+ Steams= | Metal Hydroxide + Hydrogen Metal Oxide + Hydrogen |
| The lower the ........, the ..... visible the reaction of metals with acid. | reactivity, less |
| Metal + Acid= | Salt + Hydrogen |
| What is the test for hydrogen? | When a lit splint is near hydrogen, there will be a squeaky pop. |
| What does Displacment mean? | Taking place of |
| What is the rule for displacement reactions? | A more reactive metal will displace a less reactive metal. |
| Magnesium + Copper Sulphate= Copper + Zinc Sulphate= | Magnesium Sulphate + Copper No change |
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