Combination Reactions
Chemistry ⇒ Chemical Reactions and Equations
Combination Reactions starts at 7 and continues till grade 12.
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A student claims that the reaction between calcium oxide and water to form calcium hydroxide is a combination reaction. Do you agree? Explain your answer.
A student mixes 2 g of magnesium with oxygen and obtains 3.3 g of magnesium oxide. Is this a combination reaction?
Describe the difference between a combination reaction and a decomposition reaction.
Explain why the reaction between carbon dioxide and water to form carbonic acid is a combination reaction.
A reaction is given: 2Fe + 3Cl2 → 2FeCl3. Is this a combination reaction? (Yes/No)
A student claims that the reaction between calcium oxide and water to form calcium hydroxide is a combination reaction. Do you agree? Explain your answer.
A student mixes 2 g of magnesium with oxygen and obtains 3.3 g of magnesium oxide. Is this a combination reaction?
A chemist combines 4 g of hydrogen with 32 g of oxygen to form water. Calculate the mass of water formed and state whether this is a combination reaction.
A combination reaction always results in: (1) Two or more products (2) A single product (3) No product (4) Only gaseous products
Which of the following is a characteristic of combination reactions? (1) They always require heat (2) They always produce more than one product (3) They involve two or more reactants forming a single product (4) They always involve gases
Which of the following is a combination reaction? (1) 2H2 + O2 → 2H2O (2) CaCO3 → CaO + CO2 (3) 2KClO3 → 2KCl + 3O2 (4) 2AgNO3 + Cu → Cu(NO3)2 + 2Ag
Which of the following is a combination reaction? (1) 2KClO3 → 2KCl + 3O2 (2) 2Na + Cl2 → 2NaCl (3) CaCO3 → CaO + CO2 (4) 2AgNO3 + Cu → Cu(NO3)2 + 2Ag
Fill in the blank: In a combination reaction, two or more ________ combine to form a single product.
Fill in the blank: The reaction of aluminum with chlorine to form aluminum chloride is a ________ reaction.
Fill in the blank: The reaction of calcium oxide with water to form calcium hydroxide is a ________ reaction.
Fill in the blank: The reaction of calcium with oxygen to form calcium oxide is a ________ reaction.
A reaction is given: 2Fe + 3Cl2 → 2FeCl3. Is this a combination reaction? (Yes/No)
Is the reaction between calcium oxide and carbon dioxide to form calcium carbonate a combination reaction? (Yes/No)
Is the reaction between carbon monoxide and oxygen to form carbon dioxide a combination reaction? (Yes/No)
State whether the following statement is true or false: All combination reactions are exothermic.
