Created by Chloe Roberts
over 10 years ago
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Question | Answer |
Image:
Chem_2 (image/png)
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C1 2 |
What is Limestones Main formula | CaCO3 |
How is cement made? | Limestone is mixed with clay and heated strongly in a kiln. The product is then grounded up to make a fine powder. |
Name the FOUR substances used to make concrete | Sand Water Small stones OR Crushed rock Cement |
What is meant by THERMAL DECOMPOSITION of a compound | Type of reaction where a substance is broken down by heat |
Name the products formed when calcium carbonate is heated strongly | Calcium Oxide Carbon Dioxide |
What is the word equation for the reaction of calcium oxide with water | Calcium oxide + water = Calcium Hydroxide |
Why does limewater go cloudy when mixed with carbon dioxide | The lime and the carbon dioxide react to form calcium carbonate, meaning a solid in the particles is formed and this turns the lime water cloudy. |
Why does acid rain damage limestone | When acidic rainwater falls on limestone or chalk, a chemical reaction happens. New soluble substances are formed in the reaction. These are washed away and the rock is weathered. |
When Limestone is heated what happens | It Glows (LIME light) |
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