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Chemistry
GCSE

Balance the equation: C4H8 + O2 goes to CO2 + H2O

Balance the carbon atoms first by adding a 4 in front of the CO2,

Then balance the hydrogen atoms by adding a 4 in front of the H2O, 

Count up the number of oxgens on the right hand side: (4...

JH
Answered by Jack H. • Chemistry tutor
13632 Views

Explain why an atom has no overall charge

Atoms are made up of three different types of particle. Protons and neutrons exist in the nucleus, while electrons orbit.

The relative charges of these particles mean that protons are positive whil...

SK
Answered by Salko K. • Chemistry tutor
6610 Views

What is produced when Sodium Carbonate reacts with Hydrochloric Acid

Since any metal carbonate reacts with any acid to produce a salt and water and carbon dioxide, the resulting product from that specific reaction will be sodium chloride, water

PL
Answered by Patrick L. • Chemistry tutor
13970 Views

How do I draw a dot and cross diagram to show covalent bonds?

Start by identifying the atoms that are going to be bonded to each other, for example, two hydrogen atoms, and then work out how many electrons are in the outer shell of those atoms. Hydrogen only has one...

FR
10025 Views

An unknown compound burns with a lilac flame and produces a yellow precipitate when mixed with dilute nitric acid and silver nitrate. Give the formula of the compound.

(Talk about needing to memorise colour tests for base metals and tests for Halides) The compound is KI (potassium Iodide) because potassium compounds burn with a lilac flame, and production a pale yellow ...

MH
Answered by Matthew H. • Chemistry tutor
11987 Views

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