Chemistry Year 10

How is a positively charged ion formed from an atom?

Which of these words could be used to describe air?

What force holds together oppositely charged ions in an ionic compound?

What is a covalent bond?

What term is given to the spreading out of particles through a liquid or gas?

Which method would you use to separate alcohol and water?

What sorts of elements are involved in covalent bonding?

Which is a typical property of molecular covalent substances?

When CO2 is removed from calcium carbonate, what is formed?

Which of the following will not conduct electricity?

Do you enjoy chemistry?

Which atom is the most stable: F, Ne, Na, Ca?

What will be the charge on a sulphide ion, formed from a sulphur atom?

What would be the best way to separate insoluble calcium carbonate powder from water?

Which allotrope (form) of pure carbon is the hardest?

When solid copper sulphate is added to water and stirred, what is the solute?

Why is limestone added to the blast furnace during the extraction of iron?

Why do ionic compounds usually have high melting points?

What is present at the centre of an atom?

The modern periodic table is usually credited to Dmitri Mendeleev. What nationality was he?

What is the maximum number of electrons that can fit into the second shell?

Which atoms have the same number of protons but different numbers of neutrons?

What will be the formula of an ionic compound formed from calcium and oxygen?

What atom has the electron configuration 2,8,5?

When a negative ion is formed because an atom has gained an electron, describe this process?

What will be the charge on an aluminium ion?

How could a mixture of iron and sulphur be separated?

Which sub-atomic particle has a mass of 1 and no charge?

What name is given to a substance that is made from more than one element?

What was the significance of Mendeleev leaving gaps in his periodic table?