Top answers

Why does the first ionisation energy of atoms generally increase across a period?

The first ionisation energy is defined as the energy required to remove one mole of electrons from each atom of a mole of gaseous atoms. As we go along a period in the periodic table, the atomic number incre...
Answered by • Chemistry tutor
4515 Views

How does DNA replication work?

DNA replication is called semi-conservative, because each original strand is used to create a new strand. In order to do this, first we need to separate the two strands: they are unwound and unzipped by the ...
ET
Answered by Ellie T. • Biology tutor
4564 Views

Express as a single logarithm 2 loga 6 loga 3 [2 marks]

loga12 explantion:from simples rules of logs
Answered by • Maths tutor
8947 Views

How can I spot patterns more easily in Abstract Reasoning, when the shapes seem random?

If you're struggling to spot patterns in the shapes on an abstract reasoning question, try to remember the few key ways the question writers tend to make a relationship between the two "sets", or p...
ET
Answered by Ellie T. • UCAT tutor
2556 Views

With aid of diagrams, explain the formation of a U shaped valley

U shaped valleys are formed from V shaped valleys. Ice and snow accumulates in the V shaped valley and enters the cracks where it freezes and expands overnight. As the snow melts during the day this relieves...
Answered by • Geography tutor
7056 Views