Top answers

Chemistry
GCSE

What is a catalyst?

A catalyst lowers the activation energy of a reaction and therefore increases the rate of reaction. The catalysts reacts with the reactants but is regenerated again i...

HG
Answered by Hannah G. Chemistry tutor
4627 Views

What do you get when you add an acid to a metal hydroxide?

If you add an acid to a metal oxide you get a salt and water.

For example: 

HCl + NaOH ---> NaCl + H2O

JM
Answered by Jenny M. Chemistry tutor
4668 Views

How do enzymes affect the rate of reaction?

Enzymes are known as biological catalyst and work by lowering the activation energy of a reaction. They do this by providing an alternative pathway whi...

BO
Answered by Bukky O. Chemistry tutor
19035 Views

How do you calculate the relative formula mass of a compound?

The relative formula mass ...

VK
21837 Views

What is a racemic mixture?

To explain a racemic mixture it is firstly necessary to explain what an enantiomer is.

Enantiomers are stereoi...

KG
Answered by Katie G. Chemistry tutor
23153 Views

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