Top answers

Explain in terms of structure why giant ionic lattices have high melting and boiling points. [4]

Giant ionic lattices are regular structures, held together by ionic bonds. These ionic bonds are strong electrostatic forces of attraction between oppositely charged ions, acting in all directions. Energy is...
RN
Answered by Ruth N. • Chemistry tutor
26742 Views

Comment on the use of metaphor in Simon Armitage’s poem ‘The Manhunt’ and the effect it has upon the reader.

In ‘The Manhunt’, in which a soldier’s wife describes her attempts to reconnect with her psychologically and physically damaged husband, Armitage regularly employs metaphors to convey the soldier’s fractured...
ES
10839 Views

In a sale, normal prices are reduced by 18%. The sale price of an umbrella is £25.83. Work out the normal price of the umbrella.

Once again break down the question: All prices are reduced by 18%, so sale price is 100% (normal price) - 18% (sale price) = 82%. As we know what the sale price is, but we DO NOT KNOW the normal price we can...
KS
Answered by Kenji S. • Maths tutor
11569 Views

Describe the similarities and differences between the processes of diffusion and osmosis. [4]

Both diffusion and osmosis are processes concerning the movement of molecules from an area of high concentration to an area of low concentration, along a concentration gradient. Any type of molecule can move...
RN
Answered by Ruth N. • Biology tutor
3484 Views

Simplify: 5a + 2 – a + 9

For this question, we need to simplify the expression, and to do this, we first should rearrange the way it is written, so similar (or like) terms are next to each other. So in rearranging the expression we ...
SR
Answered by Sindhu R. • Maths tutor
8731 Views