What does each of these substances have in common:
CH4, HCl, MgO, Ne, 02, SO2

What are the names and numbers of the particles in an atom of sodium (Atomic number 11, mass number 23)

What determines the order of the elements in the periodic table

Explain why boron and aluminium are both in the same group on the periodic table

Name the type of bond in a metal and non metal bond

Name the type of bond in a bond containing two non metals

Explain what happens to the atoms when a sodium atom reacts with a chlorine atom

Calcium carbonate decomposes when heated to produce calcium oxide and carbon dioxide. 20.0g of calcium carbonate produce 11.2 of calcium oxide. What mass of carbon dioxide would be produced. Explain How

What does each of these substances have in common:
Ca, H2, Ne, O2, SO2