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Why does the reactivity of the Group 1 elements increase as you go down the group?

As you descend group 1, there is an increasing number of electron shells, therefore increasing the distance between the positive nucleus and the negative outer electron which decreases the attraction between...
BJ
Answered by Bethan J. • Chemistry tutor
2944 Views

Explain the formation of the ionic compound Calcium Chloride

This is an example of ionic bonding, meaning that the cation (calcium) will lose electrons and the anion (chloride) will gain electrons so all ions will have a full outer shell.Calcium will form a 2+ ion, me...
BJ
Answered by Bethan J. • Chemistry tutor
23632 Views

(x+2)(x-3) expand and simplify

A key algebraic technique for double brackets is FOILx^2 -3x + 2x -6simplify furtherx^2 -x -6can check by factorisingthe integers adds to make "the number" and multiply to make "the x"
GF
Answered by Grace F. • Maths tutor
3828 Views

Describe the formation of a waterfall.

A waterfall is an erosional landform found in the upper course of a river. Its formation starts as water flows over rock eroding downwards by hydraulic action and abrasion (and perhaps corrosion). Differenti...
GF
Answered by Grace F. • Geography tutor
3769 Views

What is the best way to structure an essay and/or written response?

The beauty of English Literature is that, on many occasions, there is no right or wrong answer. Different people interpret different texts in different ways and as long as you outline your answer clearly , i...
RH
4900 Views