Ionic compounds form when the atoms of a metal combine with the atoms of a non - metal
A mole of rice grains would form a huge mountain of rice with enough rice to feed the world's current population for the next 6088978 years!
1.27 What is a mole? Students should: 1.27 know that the mole (mol) is the unit for the amount of a substance 1.28 understand how to carry...
Calculating the number of moles knowing the mass and the Ar ( mass of one mole)
1.28 Calculating moles The following masses of elements all contain one mole of atoms: 12.0 g Carbon, 32.1 g Sulphur, 14 g Nitrogen,&n...
1.23 Family resemblances Hydrogen is often listed above group 1 the Alkali metals. Although like group 1 atoms, hydrogen atoms have a ...
The mass spectrum of boron
1.17 Activity 2. Calculating relative atomic mass. Students should: 1.17 be able to calculate the relative atomic mass of an element (Ar) ...
more reactive metals will displace less reactive metals e.g the furry worm
In the "furry worm" experiment the reactive magnesium metal reduces the less reactive copper. In this post we are going to investigate how...
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