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Science 2010 SCR
Revision of Simple Chemical Reactions
| Question | Answer |
|---|---|
| Acid+Metal= | Hydrogen |
| Acid+Carbonate= | Carbon Dioxide |
| What is formed when materials burn? | Oxides |
| A Hydrocarbon is? | Anything that burns |
| What 2 substances are formed when hydrocarbons burn? | Carbon Dioxide and Water |
| Give an exmple of a word equation | Iron+Oxigen=Iron Oxide |
| Is burning reversible or irreversible? | Irreversible |
| Inflammable | Easy to catch fire |
| Flammable | Easy to catch fire |
| Non-flammable | Will not catch fire |
| Incomplete burning produces a highly dangerous and poisonous gas called... | Carbon Monoxide |
| How can you remove the heat from the Fire Triangle?Give 2 examples | Water thrown on fire.(Unless it is an oil. petrol or electric fire.Because the water will bounce back boiling hot)Or sand thrown on the fire. |
| How can you remove the oxygen from the Fire Triangle?Give 2 reasons | A non-flammable blanket will smother the fire.Or a Carbon Dioxide Extinguisher.Sprayed at the fire.This will create an invisable blanket. |
| Hydrogen is the ........ gas.It has a ... density.It is lighter than ... and used to be used for balloons and airships. | Lightest Low Air |
| Chemical reactions are .......... Chemical reactions cause ...... changes, ....... appearing and ........... changes. | Irreversible Colour Temperature |
| What is the test for hydrogen gas? | Squeky pop from splint |
| What is the test for carbon dioxide gas? | Carbon Dioxide turns lime water milky |
| A Hydrocarbon is? | Anything that burns |
| What 2 substances are formed when hydrocarbons burn? | Carbon Dioxide and Water |
| Another name for burning is? | Combustion |
| What fraction of air is oxygen? | 1/5 |
| What are the three things that make the Fire Triangle? | Fuel,Oxygen and Heat |
| How can you remove the heat from the Fire Triangle?Give 2 examples | Water thrown on fire.(Unless it is an oil. petrol or electric fire.Because the water will bounce back boiling hot)Or sand thrown on the fire. |
| How can you remove the oxygen from the Fire Triangle?Give 2 reasons | A non-flammable blanket will smother the fire.Or a Carbon Dioxide Extinguisher.Sprayed at the fire.This will create an invisable blanket. |
| Hydrogen is the ........ gas.It has a ... density.It is lighter than ... and used to be used for balloons and airships. | Lightest Low Air |
| What is the test for Oxygen? | Pure Oxygen relights a glowing splint |
| Phisical changes are .......... and can go back to thier original form. | Reversible |
| Acid+Alkali= | Salt+Water |
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