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C Fundamental Ideas

Q: 1.4 How does a non-metal bond with a non-metal ?

Non-metals bond through sharing an electron ; this process is called covalent bonding .

Q: 2.1 Where is limestone used in building?

Limestone is used in the production of cement - heating and mixing it with powdered clay - and concrete - mixing cement powder with water, sand and crushed powder.

Q: 2.1 What happens to calcium carbonate when it's heated? What reaction is this?

When heated, the calcium carbonate in limestone breaks down to make calcium oxide and carbon dioxide . This reaction is called THERMAL DECOMPOSITION .

4 important questions on C Fundamental Ideas

1.4 How does a non-metal bond with a non-metal?

Non-metals bond through sharing an electron; this process is called covalent bonding.

1.5 Can new atoms be created or destroyed? What effect does this have on chemical reactions?

As energy and elements can never be created or destroyed, the total mass of reactants must equal the total mass of products [balancing equations].
Therefore, the same number of each type of atom need to be on each side of the equation.

2.1 Where is limestone used in building?

Limestoneis used in the production of cement - heating and mixing it with powdered clay - and concrete- mixing cement powder with water, sand and crushed powder.

2.1 What happens to calcium carbonate when it's heated? What reaction is this?

When heated, the calcium carbonate in limestone breaks down to make calcium oxideand carbon dioxide.

This reaction is called THERMAL DECOMPOSITION.

The question on the page originate from the summary of the following study material:

Chem

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