Group I elements and transition elements are metals. Student X suggests that the Group I elements are above hydrogen in the metal reactivity series but that not all transition elements are. Student Y suggests that the densities of Group I elements are lower than those of the transition elements. Which students are correct?

Aluminium is higher than copper in the reactivity series so the following displacement reaction should be feasible. 2…

In which equation is the underlined element reduced?

A metal X forms oxides with the formulae XO and X2O3. Where is X in the Periodic Table?

The diagram shows a simple laboratory apparatus for the preparation and collection of a dry gas. What is the gas?

A mixture containing equal volumes of two liquids that mix completely but do not react together is placed in the appa…

Which graph shows the number of electrons in the outer shell of an atom, plotted against the proton (atomic) number f…