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describe in terms of electrons what happens when magnesium oxide is formed from magnesium and oxygen atoms?

Magnesium in a metal, whereas oxygen is a non metal - therefore magnesium oxide is formed by an ionic bond (if it were 2 non metals it would be a covalent bond). It is important to understand that atoms pref...
MK
Answered by Maaedah K. • Chemistry tutor
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Using examples, explain the difference between price elastic and inelastic.

Price elastic refers to when a change in the price of a good or services creates a larger percentage change in the demand for that good, or PED > 1. An example of an elastic good is Hovis Bread, because t...
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Answered by Rebecca H. • Economics tutor
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Given the curve y=x^2 +1 and the line y=k, find, using graphical methods only, the value of k for which there is exactly one solution.

Graphically, the solution of a pair of simultaneous equations is the point of intersection between both curves. If we want only one solution to the system of equations, then there should only be one point of...
MT
Answered by Marcos T. • Maths tutor
3242 Views

Factorise the following expression x^2+11x+24=0

Find two values that multiply together to make 24, and add together to make 11 List the factors of 24:24,112,26,48,3 Here we can see the only numbers that add together to make 11 are 8 and 3, so these are th...
LM
Answered by Lauren M. • Maths tutor
3640 Views

How can you distinguish between an endothermic reaction and an exothermic reaction based on temperature change of the surroundings.

In an exothermic reaction, energy is released from the system and into the surroundings, the system loses energy so the surroundings gain energy. The surroundings gain energy as heat and therefore there is a...
KS
Answered by Kuba S. • Chemistry tutor
13766 Views