b. Element X forms a compound with hydrogen. Element X is shown in grey. Hydrogen is shown in green. Circle the diagram below which represents the compound formed. Justify your answer.
:Fig. 19.14
2. Final Examination 2019, Question 4 Natural gas contains methane (CH4
Reactants ). Methane is a fuel.
Methane burns in oxygen to produce carbon dioxide and water. The diagram below represents the reaction.
Products
CH4 :Fig. 19.15
Count the number of each type of atom in the products to complete the table below. Element Type of atom Number of atoms in reaction Number of atoms in product