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think of it in the form of Ax^2 +Bx +C. Most of the GCSE examples will have A as zero so we will ignore the A. To factorise this you need to find what two numbers multiply to make C and adds to make B. In...

Periodicity:As you move across the row the atomic number increases, ie an additional proton is added for each additional element, this is what makes them different elements rather than isotopes of the sam...

Define cis and trans alkenes:Carbon to carbon single bonds can freely rotate to give a carbon chain that can take on a number of shapes (this is to do with the overlap of p - orbitals to ...

I would most likely present a figure of a dilated & undilated pupal and hopefully this will begin their thought process.
To receive full marks for this answer, I will be looking for the below poi...

When we see light, the colour of light that we see is determined by the wavelength of the light. Violet light has the shortest wavelength, and red light has the longest wavelength. Red shift happens when ...