What is a mixture of two metals called?
What happens when a covalent bond is formed?
What type of bonding is in a water molecule?
Oxygen atoms with different numbers of neutrons are called...
What are the relative masses of the particles in these atoms...
The bonds in silicon dioxide are...
Reactions that give out energy are...
Why are catalyst's used in chemical reactions?
One reason why instrumental methods of analysis are used to identify the compounds?
Why are thermosoftening polymers not suitable for storing very hot food?
(these polymers are used to make plastic bottles and food packaging)