Name the bonding type present in these elements.
State the test used for hydrogen gas. test ................. positive result .................
Suggest the pH of a strong alkali solution. pH = .................
Name a substance that can be used to check the pH of a strong alkali solution.
Write the symbol equation for sodium reacting with cold water. Include state symbols.
State the name for atoms of the same element that have different nucleon numbers.
Complete Table 2.1 to show how many protons, neutrons and electrons are present in the lithium atom and ion shown.
Calculate the relative atomic mass of lithium to one decimal place. relative atomic mass = .................
Complete Fig. 2.1 to show the electronic configurations of the ions in potassium oxide. Show the charges on the ions.