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Chemistry
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How do I draw a dot and cross diagram to show covalent bonds?

Start by identifying the atoms that are going to be bonded to each other, for example, two hydrogen atoms, and then work out how many electrons are in the outer shell of those atoms. Hydrogen only has one...

Answered by Francesca R. Chemistry tutor
9481 Views

Draw the reaction mechanism for the formation of ethanol from bromoethane and water and name the mechanism.

The first step is the draw out the molecules in question to understand what is happening in the reaction. You can see that the bromine atom has been substituted for an alcohol group (OH) in the enthane mo...

Answered by Henry H. Chemistry tutor
6432 Views

What is entropy?

Entropy is the level of disorder in the universe. The more disordered something is, the higher its entropy. Molecules in solids ae specifically arranged and vibrating, hence the level of disorder is low, ...

Answered by Rajas B. Chemistry tutor
1682 Views

Explain why chlorine has a lower boiling point than Bromine. (2 marks)

Chlorine molecules are smaller than bromine molecules in size, therefore, the van der Waals forces (intermolecular forces) are weaker between Cl2 molecules than compared to Br2 molecules.

Answered by Joseph B. Chemistry tutor
9752 Views

Explain why the first ionization energy of sodium is less than that of magnesium?

Ionization energy is the energy required to remove the most loosely bound electron from an atom. As the nuclear charge of an atom increases and the size of an atom decreases, the ionization energy increas...

Answered by Mia K. Chemistry tutor
46392 Views

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