Transition elements are harder and stronger than Group I elements. Describe two other differences in physical properties between transition elements and Group I elements.
State one physical property of transition elements that is the same as that of Group I elements.
State two chemical properties shown by transition elements.
State the colour change observed when water is added to anhydrous cobalt(II) chloride. from ____ to ____
(i) Which two substances combine with iron to make rust? (ii) Which metal is used to galvanise iron?
Use your knowledge of the reactivity series to explain why magnesium is suitable for the metal blocks and copper is not suitable for the metal blocks.
(i) Write a chemical equation for the reaction between iron(III) oxide and phosphoric acid to produce iron(III) phosphate and water. (ii) Iron(III) phosphate is an insoluble salt. Suggest how forming iron(III) phosphate stops further rusting.