Term
| The early atmosphere of earth was formed of... |
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Definition
| Gases that escaped from volcanoes. |
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Term
| We know the main gases were... |
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Definition
| Water and CO2 because they are still produced by volcanoes. |
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Term
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Definition
| One of the most reactive gases in the atmosphere. |
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Term
| Oxidation can be seen in... |
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Definition
| Rusted metals and maintenance of fire. |
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Term
| Recent rocks contain iron oxide, older rocks iron is not oxidised. This proves... |
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Definition
| Oxygen levels in the atmosphere have increased. |
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Definition
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Definition
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Definition
| Water vapour in the atmosphere condensing and precipitating. |
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Term
| Carbon dioxide _______ into the oceans, causing... |
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Definition
| Dissolved, the levels in the atmosphere to drop. |
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Term
| Early sea plants released... |
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Definition
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Term
| Evolution of life caused... |
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Definition
| Major changes to the atmosphere. |
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Term
| The modern atmosphere contains 78%... |
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Definition
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Term
| The modern atmosphere contains 21%... |
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Definition
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Term
| The modern atmosphere contains 0.03%... |
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Definition
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Term
| Igneous rock is formed by... |
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Definition
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Term
| Sedimentary rock is formed by... |
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Definition
| Layering sediments on the ocean floor. |
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Term
| Metamorphic rock is formed by... |
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Definition
| Sedimentary rock coming under heat and pressure. |
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Term
Igneous rock underground has...
And is Called... |
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Definition
Larger crystals.
Intrusive. |
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Term
Igneous rock above ground has...
And is called... |
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Definition
Smaller crystals.
Extrusive. |
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Term
| Chalk and Limestone are... |
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Definition
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Term
| Chalk and Limestone can turn into... |
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Definition
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Term
| Limestone, chalk and marble are made of... |
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Definition
| CaCO3 (Calcium Carbonate). |
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Term
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Definition
| Protons, Neutrons and Electrons. |
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Term
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Definition
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Definition
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Definition
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Term
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Definition
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Term
| A base is a compound that... |
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Definition
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Term
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Definition
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Term
| Soluble bases are called... |
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Definition
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Term
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Definition
| A compound is split up using electrical energy. |
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Term
| Chlorine can be produced by electrolysis of... |
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Definition
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Term
| The negative electrode is the... |
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Definition
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Term
| The positive electrode is the... |
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Definition
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Term
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Definition
| Lit splint in a test tube makes a pop. |
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Term
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Definition
| Damp indicator paper bleaches white. |
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Term
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Definition
| A glowing splint relights. |
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Term
| Crude oil is a mixture of many... |
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Definition
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Term
| Crude oil can be broken into separate hydrocarbons by... |
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Definition
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Term
| Most hydrocarbons in crude oil are... |
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Definition
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Term
| All alkanes have the formula... |
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Definition
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Term
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Definition
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Term
| Alkenes are hydrocarbons that have a... |
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Definition
| Carbon-carbon double bond. |
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Term
| Cracking is a process that... |
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Definition
| Breaks long chain alkanes into short chain alkanes and alkenes. |
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Term
| Alkenes are used to make... |
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Definition
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Term
| A single alkene is called a... |
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Definition
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