Combination Reactions
Chemistry ⇒ Chemical Reactions and Equations
Combination Reactions starts at 7 and continues till grade 12.
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A student mixes 2 moles of hydrogen gas with 1 mole of oxygen gas. How many moles of water are formed in the combination reaction?
Describe a real-life example of a combination reaction.
Explain why the reaction between calcium oxide and water is classified as a combination reaction.
Explain why the reaction between hydrogen and oxygen to form water is a combination reaction.
Give an example of a combination reaction involving a metal and a non-metal.
In a combination reaction, the reactants are usually:
State the difference between a combination reaction and a decomposition reaction.
A student mixes 2 moles of hydrogen gas with 1 mole of oxygen gas. How many moles of water are formed in the combination reaction?
Which of the following is a characteristic of combination reactions?
(1) They always produce more than one product
(2) They involve the breaking down of a compound
(3) They involve the formation of a single product
(4) They require a catalyst
Which of the following is a combination reaction?
(1) 2Fe + 3Cl2 → 2FeCl3
(2) 2AgNO3 + Cu → Cu(NO3)2 + 2Ag
(3) CaCO3 → CaO + CO2
(4) 2KNO3 → 2KNO2 + O2
Which of the following is a combination reaction?
(1) 2H2 + O2 → 2H2O
(2) CaCO3 → CaO + CO2
(3) 2KClO3 → 2KCl + 3O2
(4) Zn + 2HCl → ZnCl2 + H2
Which of the following is a combination reaction?
(1) 2H2O → 2H2 + O2
(2) 2Na + Cl2 → 2NaCl
(3) CaCO3 → CaO + CO2
(4) 2KNO3 → 2KNO2 + O2
A combination reaction always involves two or more substances combining to form a _______.
Fill in the blank: The reaction between hydrogen and chlorine to form _______ is a combination reaction.
Fill in the blank: The reaction of aluminum with oxygen to form _______ is a combination reaction.
Fill in the blank: The reaction of calcium with oxygen to form _______ is a combination reaction.
Is the reaction between carbon monoxide and oxygen to form carbon dioxide a combination reaction? (Yes/No)
Is the reaction between non-metals and oxygen to form non-metal oxides a combination reaction? (Yes/No)
Is the reaction between sodium oxide and water to form sodium hydroxide a combination reaction? (Yes/No)
State whether the following statement is true or false: All combination reactions are exothermic.
