When magnesium is burnt, heat and light are produced. The burning of magnesium is a:A.reversible changeB.physical changeC.chemical and exothermic changeD.chemical and endothermic change

Burning the magnesium will produce a single compound. Predict whether the compound produced will have more or less mass than the magnesium you start off with.Give a reason for your prediction.

The diagram shows some of the reactions of magnesium.(a) Complete the table to give the identity of substances F, G and H.substance Identitysolution Fgas Gdilute acid H(b) Write a chemical equation for the reaction between magnesium and steam.4. A student was asked by his teacher to perform a flame test on a solid. He used this method.● dip the tip of a clean platinum wire into hydrochloric acid and then into the solid● adjust the air hole of the Bunsen burner to obtain a non - roaring, non – luminousBunsen flame● place the tip of the platinum wire into the edge of the flame● observe the colour in the flame(a) (i) why is it important that the platinum wire is clean?

Assertion: Magnesium ribbon burns with a dazzling flame in air.Reason: A white substance magnesium nitride is formed.

magnesium ribbon burns with a dazzling flame in air (oxygen)and changes into a white substance, magnesium oxide. Is magnesium being oxidised orreduced in this reaction?

10 Magnesium carbonate decomposes when heated in a Bunsen burner flame.Values for the standard enthalpies of formation, , of the species involved are shown.MgCO 3 = –1095.8 kJ mol –1MgO = –601.7 kJ mol –1CO 2 = –393.5 kJ mol –1What is the standard enthalpy change for the decomposition of magnesium carbonate?A +100.6 kJ mol –1B +887.6 kJ mol –1C +1095.8 kJ mol –1D +2091 kJ mol –