Balanced chemical equations

Question 1

How to balance an equation

Answer 1

Make the atomic numbers equal to balance e.g. 1+ and 1-

but 3- and 4+ wouldn’t work due to different numbers

Question 2

Some chemical processes to learn

Answer 2

metal + acid -> salt + hydrogen metal oxide + acid -> salt + water metal hydroxide + acid -> metal salt + water metal carbonate + acid -> salt + carbon dioxide + water

Question 3

Some more

Answer 3

metal + acid -> salt + hydrogen metal oxide + acid -> salt + water metal hydroxide + acid -> metal salt + water metal carbonate + acid -> salt + carbon dioxide + water
group 7 element + hydrogen -> hydrogen halide (acidic) group 7 element + metal -> metal halide

Question 4

Some more more

Answer 4

metal + oxygen (air) -> metal oxide group 1 metal + water -> group 1 metal hydroxide + hydrogen group 2 metal + water -> group 2 metal hydroxide + hydrogen magnesium + steam -> magnesium oxide + hydrogen metal oxide + water -> metal hydroxide