Identify two statements that are correct for sodium. Tick two boxes. It is a relatively soft metal. It has a high melting point. Its chlorides are coloured. It has a lower density than most metals. It is a good insulator.
Give the names of the state changes shown at R and S.
Put the four metals in reactivity order, with the least reactive metal first.
Describe how to prepare a sample of pure dry magnesium chloride crystals after the reaction has finished. In your answer describe how to: • remove the excess magnesium from the reaction mixture • crystallise the magnesium chloride • dry the crystals.
Complete this description of the test for sulfur dioxide using words from the list. blue, chloride, colourless, green, manganate(VII), sulfate(VI) The test for sulfur dioxide uses acidified aqueous potassium [BLANK]. The colour change is from purple to [BLANK].
Suggest how to change yellow nickel(II) sulfate into green nickel(II) sulfate.
Identify which word best describes green nickel(II) sulfate with the formula $\text{NiSO}_4\cdot7\text{H}_2\text{O}$. Circle the correct answer. anhydrous decomposed hydrated oxidised reduced