Question 11 MarkBalance the equations.$N _2+ H _2 \rightarrow NH _3$Answer$N _2+3 H _2 \rightarrow 2 NH _3$View full question & answer→
Question 21 MarkBalance the equations.$Fe + O _2 \rightarrow Fe _2 O _3$Answer$4 Fe +3 O _2 \rightarrow 2 Fe _2 O _3$View full question & answer→
Question 31 MarkBalance the equations.$HgO \rightarrow Hg + O _2$Answer$2 HgO \rightarrow 2 Hg + O _2$View full question & answer→
Question 41 MarkBalance the equations.$Ca + O _2 \rightarrow CaO$Answer$2 Ca + O _2 \rightarrow 2 CaO$View full question & answer→
Question 51 MarkWrite skeletal equations :zinc carbonate → zinc oxide + carbon dioxideAnswer$ZnCO _3 \rightarrow ZnO + CO _2$View full question & answer→
Question 61 MarkWrite skeletal equations :calcium carbonate → calcium oxide + carbon dioxideAnswer$CaCO _3 \rightarrow CaO + CO _2$View full question & answer→
Question 71 MarkWrite skeletal equations :hydrogen + chlorine → hydrogen chlorideAnswer$H _2+ Cl _2 \rightarrow HCl$View full question & answer→
Question 81 MarkWrite skeletal equations :magnesium + oxygen → magnesium oxideAnswer$Mg + O _2 \rightarrow MgO$View full question & answer→
Question 91 MarkName the following:A chemical reaction in which a substance breaks up into two or more simple substances.AnswerDecomposition reactionView full question & answer→
Question 101 MarkName the following:A chemical reaction in which two substances combine to form a new compound.AnswerCombination reactionView full question & answer→
Question 111 MarkName the following:The substances which are produced by a chemical reactionAnswerProductsView full question & answer→
Question 121 MarkName the following:The substances which react with one another in a chemical reaction.AnswerReactantsView full question & answer→