Top answers

Chemistry
GCSE

What are reaction rates and what are the associated factors?

Reaction rate is the speed at which a reaction will occur.Increasing the temperature, pressure and concentration will increase the reaction rate.

Answered by Moneeb A. Chemistry tutor
1566 Views

How can I increase the rate of reaction between two substances, without changing the chemicals I use?

Rate of reaction is based on collision frequency: chemicals react when molecules come into contact with each other with enough energy to react. If you want to increase the rate of reaction, you need to fi...

Answered by Eleanor Grace G. Chemistry tutor
1822 Views

In terms of structure and bonding, explain why graphite is able to conduct electricity.

Carbon is in group 4 of the periodic table therefore has 4 electrons in its outer shell which are available for bonding. Each carbon atom in graphite forms 3 covalent bonds with another carbon atom within...

Answered by Har-Kiran K. Chemistry tutor
7039 Views

Why is iodine a solid at room temperature and chlorine a gas, despite being in the same group?

Iodine is further down group 7 than chlorine. Their group number only describes the number of electrons they have in their outer shell. As iodine has a higher atomic number than chlorine, it also has more...

Answered by Stephen A. Chemistry tutor
46757 Views

Balance the following equation: Na + H2O -> NaOH + H2

2Na + 2H2O -> 2NaOH + H2

Answered by Alexander L. Chemistry tutor
3714 Views

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