Top answers

Can you please help understand this diagram I drew in class?

After the student show me the diagram, I would ask them what topic they are currently doing in chemistry and what text book they are working with. After going threw that procidure I would then upload the dia...
TM
Answered by Tara M. • Chemistry tutor
2701 Views

State and describe the structure, bonding and properties in Sodium Chloride.

Sodium chloride is an ionic compound. It is made of sodium ions which have lost an electron to become positively charged (Na+) and chloride ions which have gained an electron to become negatively charged (Cl...
VR
Answered by Vianka R. • Chemistry tutor
53309 Views

What is a exothermic reaction?

An exothermic reaction is one where the products have less energy than the starting reactants. This means the reaction must give out energy, usually in the form of heat or sound. As a result of this, H (the ...
FP
Answered by Fraser P. • Chemistry tutor
4416 Views

Crude oil is a fossil fuel - what is a fossil fuel and how is crude oil separated into its fractions?

A fossil fuel is a substance like coal, oil, or natural gas formed from decayed plant or animal remains which can be burned to produce energy and power. Crude oil is separated by fractional distillation - fi...
ES
Answered by Ella S. • Chemistry tutor
4247 Views

Describe how and explain why vegetable oils are hardened for use in foods

Vegetable oils are unsaturated because they contain lots of carbon-carbon double bonds. If we react them with hydrogen at 60oC in the presence of nickel catalyst they will become saturated, also called harde...
AM
Answered by Angus M. • Chemistry tutor
2939 Views