State the name for atoms of the same element that have different nucleon numbers.
Complete the table to show how many protons, neutrons and electrons are present in the copper particles shown.
Deduce the relative atomic mass of copper in this sample. Give your answer to one decimal place.
State the colour change observed in this test from ____________ to ____________.
Complete the chemical equation to show the reaction that takes place. CuSO$_4$ + ____________ $\rightleftharpoons$ CuSO$_4\cdot$5H$_2$O
State how hydrated copper(II) sulfate may be converted back into anhydrous copper(II) sulfate.
Describe a test for pure water.
Describe what is observed when aqueous copper(II) sulfate is added to aqueous sodium hydroxide, NaOH(aq).
Write the ionic equation for the reaction between aqueous copper(II) sulfate and aqueous sodium hydroxide. Include state symbols.
Calculate the volume of nitrogen dioxide produced at room temperature and pressure when 4.7 g of Cu(NO$_3$)_2 is heated. Follow these steps: • calculate the mass of one mole of Cu(NO$_3$)_2 • calculate the number of moles of Cu(NO$_3$)_2 used • determine the number of moles of nitrogen dioxide formed • calculate the volume of nitrogen dioxide formed at room temperature and pressure.
Write the chemical equation to show what happens when sodium nitrate, NaNO$_3$, is heated.