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Chemistry
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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.

Answered by Bridget S. Chemistry tutor
2219 Views

What is Le Chatelier's principle?

If a reaction at equilibrium is subjected to a change in concentration, pressure or temperature, the position of equilibrium will move to counteract that change.

Answered by Bridget S. Chemistry tutor
2018 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.

Answered by India M. Chemistry tutor
1290 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. W...

Answered by Ehsan S. Chemistry tutor
1586 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

Answered by Ben S. Chemistry tutor
1146 Views

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