Chemistry Reflection 3

Today, we learned more about relative molecular mass and relative atomic mass. We had to do a worksheet on relative molecular mass.  So to find the relative molecular mass we need to find the relative atomic mass of all the elements in a compound and then add them so it's like

H₂O

H₂: 1 x 2

O: 16 x 1

16+2=18 gr/mol

The number that goes first is the relative atomic mass so the relative atomic mass of hydrogen is 1 while oxygen's is 16. The second number shows how many of the atoms of the elements are there, So, this means that are only 1 atom of oxygen while there are 2 atoms of hydrogen.

Chemistry Reflection 2

Today, we learned about relative atomic mass and relative molecular mass. Relative molecular mass  is like the sum of atomic mass in a compound so for example H₂O. H₂ is (1x2) while O is 16 so it will be 18 gr/mol. Relative atomic mass is the molecular weight of an atom so it’s the average mass of an atom in an element. So for example Oxygen is 16 while Nitrogen is 14. It’s basically the number in the bottom of the periodic table