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Firstly you should work out the first derivative of the equation y= After differentiating the equation, sub the x value of the point P into the first derivative. This should give you the gradient of the e...
If you already know the text, I would begin by taking a past paper and going through all relevant questions, summarising how you would answer each one. Set a time limit - you’ll have about 30 minu...
This is because the atomic mass of an element is the sum of protons and neutrons. While the proton number is specific for an element, the neutron number can vary for different isotopes of the element. The...
Covalent bonding
Firstly, we want to make both measurements in grams. This means that we need to change 4kg (kilograms) to grams. Kilo means 1000, therefore there must be 1000 grams ( kilo gram) in 1kg. If we have 4kg, th...
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