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Chemistry
GCSE

What's the difference between an atom and an ion?

Atoms and ions are both made up of proton's and neutrons in the nucleus with electrons orbiting around. The difference is atom's have equal number of proton's and electrons while ions have more or less el...

OB
Answered by Oliver B. Chemistry tutor
7657 Views

Outline the limestone cycle including the relevant equations.

Calcium carbonate undergoes thermal decomposition to form calcium oxide and carbon dioxide.

Calcium Oxide (CaO) can undergo an exothermique réaction with water to product Calcium Hydroxide, also kn...

PM
6702 Views

Explain the collision theory.

Collision theory states that for a reaction to occur, particles must collide with sufficient energy, sometimes in specific orientation. The minimum amount of energy needed for a reaction to occur is calle...

YC
Answered by Young C. Chemistry tutor
6959 Views

Butane, C4H10 is burned completely in excess oxygen, write the balanced chemical formula for the reaction, name the products and type of reaction.

We need to think about the number of atoms of each element in the reactants and ensure these are the same in the products.

This is the basic UNBALANCED equation.

C4H10 ...

CJ
Answered by Callum J. Chemistry tutor
27568 Views

describe the electrostatic force between water molecules

a type of wander waals force called hydrogen bonding due to the slightly positive hydrogens and slightly negative oxygen. this occurs because of the uneven attraction for electrons between the oxygen and ...

MS
Answered by Murray S. Chemistry tutor
2143 Views

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