Top answers

What is the conservation of mass and what does this mean in relation to equations?

No atoms are lost or made during a chemical reaction, so the total mass of the products is equal to the total mass of the reactants.
KI
Answered by Kesem I. • Chemistry tutor
2687 Views

Draw a labelled diagram of carbon.

Student drawings will indicate a central nucleus with 6 neutrons and 6 protons, as well as 6 surrounding electrons in one shell.
JB
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Give the names of three commonly known types of subatomic particles along with their charge and relative masses. In the basic model of the atomic structure, where would one find each of these particles?

The three subatomic particles are electrons, protons and neutrons. Protons are positively charged and have a relative mass of 1 whilst neutrons are neutral in charge and also have a positive charge of 1. Ele...
MH
Answered by Matthew H. • Chemistry tutor
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How to calculate the number of protons, neutrons and electrons in an atom of chlorine?

Protons have a +1 charge and electrons have a -1 charge. The overall charge on an atom is 0, therefore there must be an equal number of protons and electrons in an atom so that the charges cancel out. So in ...
AT
Answered by Abbey T. • Chemistry tutor
54439 Views

What is the difference between an endothermic and exothermic reaction?

(Using a diagram of energy changes) The simplest way of thinking about it is that exothermic reactions release energy, such as heat, to the surroundings whereas endothermic reactions absorb energy from the s...
CC
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