Term
| What are paints used for? |
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Definition
| To decorate or protect surfaces. |
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Term
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Definition
| Coloured substances that are used to give paint its colour. |
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Term
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Definition
| Solid particles are mixed with liquid particles, but are not dissolved. |
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Term
| What are emulsion paints? |
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Definition
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Term
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Definition
| Use oil as the solvent (thins). |
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Term
| What are thermochromic pigments? |
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Definition
| Added to paints and change colour when the temperature changes. |
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Term
| What are Phosphorescent pigments? |
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Definition
| Added to paints to make them glow in the dark. |
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Term
| What are 3 rocks that can be used to make buildings? |
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Definition
| Granite, limestone and marble. |
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Term
| What is thermal decomposition? |
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Definition
When something is broken down using heat.
Calcium carbonate - Calcium oxide + Carbon dioxidde. |
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Term
| What 3 things does cement mix with to make concrete? |
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Definition
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Term
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Definition
| When limestone is heated with clay and then crushed. |
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Term
| What is the earth made of? |
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Definition
| Solid inner core, Liquid outer core, the mantle and the thin crust. |
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Term
| What is the outer layer of the earth called? |
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Definition
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Term
| When molten rock cools down what does it form? |
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Definition
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Term
| What is the soil like near volcanoes? |
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Definition
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Term
| How can you extact copper? |
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Definition
| By heating its ore (a rock that contains metal) with carbon. |
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Term
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Definition
| Passing electricity through a solution. |
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Term
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Definition
| A mixture of 2 elements, where at least one is a metal. |
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Term
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Definition
| When it reacts with oxygen and water. |
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Term
| How does a plant respire? |
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Definition
| It uses up carbon dioxide and produces oxygen. |
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Term
| What is a chemical reaction? |
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Definition
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Term
| What is a Catalytic converter? |
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Definition
| It removes poisonous carbon monoxide and nitrogen monoxide in car exhausts, by converting it into carbon dioxide and nitrogen. |
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Term
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Definition
78% nitrogen
21% oxygen
0.035% carbon dioxide
and water vapour. |
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