Search our library of GCSE questions

Top answers

All subjects

GCSE

Potassium forms an ionic compound with sulfur. Describe what happens when two atoms of potassium react with one atom of sulfur. Give your answer in terms of electron transfer.

Electrons are transferred from potassium to sulfur. 2 potassium atoms each lose one electron forming K+ / 1+ ionsSulfur atoms gain 2 electrons forming S2- / 2- ions. This results in the ionic formula K

Answered by Mariam B. • Chemistry tutor

2150 Views

A(0,2) and B(6,5) are two points on the straight line ABCD. If AB=BC=CD find the coordinates of the point D

If AB=BC=CD then the difference between each of the points is the same. If we look at the difference between A and B we can see that B is 6 further to the right, and 3 further up. So if we then add (6,3) ...

Answered by Rebekah V. • Maths tutor

10552 Views

How do I approach an unseen poem in an exam?

An exam question asking your thoughts on an unseen poetry is assessing your ability to understand the key message and techniques of a written piece of work. The important thing to remember with this sort ...

Answered by Hannah W. • English Literature tutor

4028 Views

What is Agnosticism?

The belief, that one cannot know if (a) God exists.

Answered by Lara B. • Philosophy and Ethics tutor

1851 Views

Describe the bonding between sodium and chlorine in NaCl

Sodium donates its outer shell (valence) electron to chlorine, so that both have a full outer shell. Sodium and chlorine are then held together by electrostatic forces of attraction between the positively...

Answered by Sarah B. • Chemistry tutor

2572 Views