# science

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• Created by: jennie123
• Created on: 02-11-14 13:52
what is lime stone made up of?
calcium carbonate, CaCO3, which when heated breaks down to form calcium oxide and carbon dioxide. Calcium oxide reacts with water to produce calcium hydroxide.
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what is Thermal decomposition?
Calcium carbonate breaks down when heated strongly. This reaction is called thermal decomposition. Here are the equations for the thermal decomposition of calcium carbonate: calcium carbonateright facing arrow with heatcalcium oxide + carbon dioxide
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which metals easily decompose?
Metals low down in the reactivity series, such as copper, have carbonates that are easily decomposed. This is why copper carbonate is often used at school to show thermal decomposition.
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Calcium oxide reacts with water to form calcium hydroxide, which is an alkali. what is the formula?
calcium oxide + water → calcium hydroxide
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what is limestone?
Limestone is a type of rock, mainly composed of calcium carbonate. Limestone is quarried (dug out of the ground) and used as a building material. It is also used in the manufacture of cement, mortar and concrete.
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cement is made up of what?
Cement is made by heating powdered limestone with clay. Cement is an ingredient in mortar and concrete: mortar, used to join bricks together, is made by mixing cement with sand and water concrete is made by mixing cement with sand, water and
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## Other cards in this set

### Card 2

#### Front

what is Thermal decomposition?

#### Back

Calcium carbonate breaks down when heated strongly. This reaction is called thermal decomposition. Here are the equations for the thermal decomposition of calcium carbonate: calcium carbonateright facing arrow with heatcalcium oxide + carbon dioxide

### Card 3

#### Front

which metals easily decompose?

### Card 4

#### Front

Calcium oxide reacts with water to form calcium hydroxide, which is an alkali. what is the formula?

### Card 5

#### Front

what is limestone?