Top answers

What are the components of an atom and what are their properties?

An atoms is composed of a central NUCLEUS , with ELECTRONS occupying shells, moving around the nucleus. The nucleus is composed of PROTONS and NEUTRONS . The PROTON has a relative mass of 1 and a charge of +...
AR
Answered by Axel R. • Chemistry tutor
7810 Views

How would you correctly carry out a flame test, and what colour would potassium yield, and what colour would lithium yield?

Answer First a wire loop is cleaned with diluted hydrochloric acid, which is then dipped into the sample metal or solution. This is then held over an open flame and the colour emitted is observed. The colour...
CK
9299 Views

What are moles in Chemistry?

The moles is the amount of a substance that we are measuring, its like measuring how many coins I have in my pocket, but instead how many atoms of an element we have. We use the equation moles=mass/RMM to wo...
LP
Answered by Lucy P. • Chemistry tutor
4723 Views

What is an isotope?

Each element has a unique number of protons. For example, every carbon atom contains 12 protons. The number of neutrons can differ for each "form" of the same element - this is known as an isotope....
JG
Answered by Joanna G. • Chemistry tutor
4626 Views

Describe the difference in boiling point, colour and viscosity between the fuel oil and gasoline fractions.

The fuel oil fraction has a higher boiling point. It is also dark brown in colour while the gasoline fraction is yellow. It is also more viscous (thicker and flows less easily) due to the fuel oil molecules ...
JJ
23445 Views