Top answers

Chemistry
All levels

Why does ice float on water? Use the structure of different states of matter to support your answer.

In a liquid, the particles are very close together, but can move around each other. In a solid, the particles are packed together. Depending on the substance, the solid particles can either be very well-o...

Answered by Akash B. Chemistry tutor
7555 Views

Predict the relative boiling points of propanal, butane and prop-2-en-1-ol from the highest to the lowest boiling point

In prop-2-en-1-ol, the strongest intermolecular forces acting between the molecules are hydrogen bonds. In propanal, the strongest intermolecular forces acting between molecules would be permanent dipole-...

Answered by Rajan K. Chemistry tutor
28678 Views

Describe the effects of changing the temperature on a reaction using Le Chatelier's princriple

Temperature: Exothermic reaction= energy given out to surroundings. Endothermic reaction= energy taken in from surroundings.

If say a reaction runs at 300 degrees and we increase the temperature to...

Answered by Branislav V. Chemistry tutor
1807 Views

Unsaturated fats change bromine water from orange to colourless. How?

Unsaturated fats usually have a C=C double bond, e.g. vegetable oil. So, it's 'unstable' because of the high concentration of negative charge (electrons). Bromine (B2) is not polarised. However, as it app...

Answered by Abi C. Chemistry tutor
7582 Views

What are the differences between exothermic and endothermic reactions?

Reactions are all about the formation and the breaking of bonds between atoms. The formation of bonds within a system causes energy to be released whilst the breaking of bonds requires energy to be applie...

Answered by William L. Chemistry tutor
4809 Views

We're here to help

contact us iconContact usWhatsapp logoMessage us on Whatsapptelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo
Cookie Preferences