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Chemistry
GCSE

What is the difference between Ionic and Covalent Bonding

IonicIonic bonding happens between metals and non-metals. The electrons in ionic bonding are given or taken. For example, Sodium + Chlorine --> Sodium Chloride. (Na + Cl --> NaCl ) ...

Answered by Ananya T. Chemistry tutor
1887 Views

Explain the trend in reactivity of the elements in Group 7.

The Halogens decrease in reactivity as you descend through the group. The atoms increase in size and Mr as you go down the group. Therefore their outer electrons are further away from the positive charge ...

Answered by Kirsten S. Chemistry tutor
6211 Views

In terms of electrons, what happens when magnesium atoms react with oxygen atoms to produce magnesium oxide?

Magnesium loses two electrons which are transferred to the oxygen atom (so oxygen gains two electrons). In this way, both magnesium and oxygen will acheive a stable full outer shell of electrons. The elec...

Answered by Reka K. Chemistry tutor
12268 Views

What is an isotope?

Atoms of the same element with different numbers of neutrons 

Answered by Bella S. Chemistry tutor
1905 Views

How many moles are in 6g of carbon?

moles = mass/mrn = 6/12n= 0.5

Answered by Lucy O. Chemistry tutor
5865 Views

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