Over a million students use our free study notes to help them with their homework
show CH4 with C in the centre and 4 H atoms with bonds to it at 90o to each other. A hydrocarbon is a molecule that contains only hydrogen and carbon atoms.
Atoms and elements are made of protons, neutrons and electrons. The nucleus is made of protons and neutrons, and the electrons surround the nucleus, as shown in the illustration below. The sum of the numb...
This can be such a confusing topic and something that I struggled with but once you get it, it makes so much sense. The best way for me to learn these was using flashcards so if that's something you want ...
The boiling point of the halogens increases as you go down the group. The halogens exist as diatomic molecules, with both atoms sharing an electron to completely fill the outer shell. The increase in boil...
In order for metals to bond they need to loose electrons to ensure that they have a full outer shell and become positively charged. The positive cations (metal ions) are attracted to the negatively charge...
←
99
100
101
102
103
→
Internet Safety
Payment Security
Cyber
Essentials
