Top answers

What is a covalent bond?

A covalent bond is formed between non-metal ions which share some of their outer shell electrons so that each atom has a stable inert gas configuration.
BS
Answered by Bridget S. • Chemistry tutor
7032 Views

Put these elements in ascending order of reactivity: Sodium, carbon, aluminium, copper, zinc, and then using your answer explain which elements can be extracted from their ores by carbon.

Copper, Zinc, Carbon, Aluminium, Sodium Copper and Zinc can be extracted from their ores by carbon, as they are less reactive than carbon.
IM
Answered by India M. • Chemistry tutor
3560 Views

Explain how pressure can effect the rate of reaction (higher chemistry)

Pressure only effects those elements that are in Gaseous state. Therefor when you increase the pressure in a reaction the gas molecules are closer together, there is an increase in density of molecules. When...
ES
Answered by Ehsan S. • Chemistry tutor
4994 Views

What the structure of an atom, and how is the charge and mass calculated?

Structure - central nucleus of protons and neutrons orbited by electrons Charge - proton = +1, neutron = 0 and electron = -1 Mass - number of protons + number of neutrons
BS
Answered by Ben S. • Chemistry tutor
3656 Views

How do metals conduct electricity?

The sea of free, delocalised electrons move through the metal, therefore conducting electricity.
LL
Answered by Louise L. • Chemistry tutor
3312 Views