Top answers

what does the atomic number show in the periodic table ?

atomic number shows the number of protonsand proton number = the number of electrons so the overall charge of an atom is neutral.
MA
Answered by Marwa A. • Chemistry tutor
2460 Views

NaOH has a high melting point and conducts electricity in solution. H2O has a low melting point and does not conduct electricity. Explain, using the structure of each, why this is the case.

NaOH is an ionic compound with strong electrostatic attraction between the oppositely charged ions . This means the melting point is high, as the bonds need a lot of energy to overcome. When dissolved, the i...
ST
Answered by Sophie T. • Chemistry tutor
8962 Views

Form the equation for the complete burning of C3H8

Firstly, note that the reaction is complete burning. This means there is no carbon monoxide produce, only carbon dioxide.Secondly, we should know that all simple combustion reactions produce water .So, we kn...
ER
Answered by Edward R. • Chemistry tutor
2978 Views

Explain why graphite conducts electricity.

Each carbon atom forms 3 (covalent) bonds with other carbon atoms. One electron is left to be free, or as we say de-localised, and therefore can move around freely. Therefore an electrical potential can be a...
LS
Answered by Liam S. • Chemistry tutor
2553 Views

Describe and explain the properties of graphene

Graphene has strong covalent bonds between the carbon molecules giving graphene properties such as a high melting point and making it very strong.Due to the delocalised electrons that are free to move across...
HC
Answered by Harry C. • Chemistry tutor
5382 Views