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Explain why graphite conducts electricity. The answer should include structure and bonding of graphite.

Each carbon atom in graphite forms 3 covalent bonds, which means there is one delocalised electron per carbon atom. These delocalised electrons can move through graphite and carry charge.

Answered by Maria S. • Chemistry tutor

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The halogens are elements in Group 7. Bromide is in Group 7. How many electrons are there in the outer shell of a bromine atom? (1 mark)

7 electrons.

Answered by Maria S. • Chemistry tutor

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Using collision theory, explain why increasing the concentration of a reactant increases the rate of reaction.

Chemical reactions occur when reacting particles collide with energy equal to or greater than the activation energy. By increasing the concentration of reactants, there are more reacting particl...

Answered by Alexandra H. • Chemistry tutor

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What will be the resulting molecule if carbon-14 underwent beta decay?

For beta decay, the atomic mass (top number) stays the same and the atomic number (bottom number) increases by one.This will give a nitrogen molecule and beta particle.

Answered by Caitlin W. • Chemistry tutor

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How would you preform the flame test to identify the presence of Sodium in a solution? (3Marks)

Using a clean nichrome wire dip the loop into the solution 2) Hold the loop in the blue flame of a bunsen burner 3) Observe the colour. In this case it will be Yellow.

Answered by Tutor516653 D. • Chemistry tutor

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