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An enzyme is a biological catalyst
Perform chemical reactions by lowering the activation energy (could then draw out ener...
Water molecules have a molecular formula of H2O. The O-H bond in water is a polar bond. This is because there is a big difference in electronegativity between the oxygen and the water. It is known that ox...
The best way to remember the difference between independent and dependent variables is when you are conducting an experiment you are looking to see if one variable (the independent variable) has an effect...
The principle necessary to answer this question is the conservation of linear momentum. This means that the sum of the momentum of the hammer and nail before impact must be equal to the total momentum of ...
x2 + 15 x + 50 = 0 (rearrange by adding 50 to both sides)
(x + 10)(x + 5) = 0 (factorise the quadratic equation)
x + 10 = 0 or x + 5 = 0 (for the a...
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