Froggy Jumps Types of Chemical Reactions GameOnline version Test your knowledge on synthesis and decomposition reactions! by Johnson Chakkalakal 1 What is a synthesis reaction? a A reaction where two or more substances combine to form a single product. b A reaction that involves the exchange of ions. c A reaction that breaks down a compound into simpler substances. 2 Which of the following is an example of a synthesis reaction? a CaCO₃ → CaO + CO₂ b 2H₂O → 2H₂ + O₂ c 2H₂ + O₂ → 2H₂O 3 What characterizes a decomposition reaction? a A reaction that forms a new compound from elements. b A reaction where a single compound breaks down into two or more products. c A reaction that involves the transfer of electrons. 4 Which of the following is a decomposition reaction? a 2H₂O → 2H₂ + O₂ b Na + Cl → NaCl c C + O₂ → CO₂ 5 What is the general form of a synthesis reaction? a A + B → C + D b AB → A + B c A + B → AB 6 What type of reaction is represented by the equation: 2NaCl → 2Na + Cl₂? a Combustion reaction b Synthesis reaction c Decomposition reaction 7 In a synthesis reaction, what happens to the reactants? a They break down into simpler substances. b They combine to form a new product. c They exchange ions with each other. 8 What is often required to initiate a decomposition reaction? a Cold temperatures b Heat, light, or electricity. c Pressure only 9 What is the product of the synthesis reaction of nitrogen and hydrogen? a Ammonia (NH₃) b Hydrogen peroxide (H₂O₂) c Nitrogen dioxide (NO₂) 10 What are the reactants in the reaction - N2 + I2 ---> NI3 a NI3 b N2 and I2 c NIO3 11 What are the products in a reaction - CaCO3 ----> CaO + CO2 a CaO and CO2 b CaCO3 c CaCO3 and CO2 12 Synthesis reaction example? a H2CO3 -----> H2O + CO2 b HgO ------> Hg + O2 c H2 + N2 -----> NH3 13 Name of the compound - Mg(OH)2 ? a Magnesium hydroxide b Magnesium dihydroxide c Magnesium dihydride 14 Chemical formula for diphosphorus pentoxide is __? a P2(CO3)5 b P2O5 c PClO3 15 SiO2 is ___ a Monosilicon dioxide b Silicon oxide c Silicon dioxide 16 AB -----> A + B is the general formula for ___? a Decomposition reaction b Synthesis reaction c Exergonic reaction 17 P4 is the symbol for___ a Tetraphosphorus b Phosphorus atom c Phosphorus molecule 18 Selinium diiodide can be written as a SeI2 b Se2I2 c SeI3 19 General formula for a synthesis reaction is --? a AB ------> A + B b A + B -----> AB c AB + A ------> B 20 C2H6 is a Dicarbon tetrahydride b Dicarbon tetrahydrogen c Carbon hydride
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