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- 1. Multiple Choice
When methane burns in oxygen, carbon dioxide and water are made. Which is a reactant?
Oxygen
Carbon dioxide
Water
Heat
- 2. Multiple Choice
Copper oxide and carbon dioxide are made when copper carbonate is heated strongly. Which is a product?
Heat
Copper carbonate
Copper oxide
Oxygen
- 3. Multiple Choice
What name is given to the force that hold atoms together in a compound?
Chemical bond
Gravity
Electrostatic attraction
Glue
- 4. Multiple Choice
What is another name for combustion?
Reduction
Burning
James
Displacement
- 5. Multiple Choice
Combustion reactions always release energy. What word can be used to describe them?
Endothermic
Exothermic
Reversible
Fluorescent
- 6. Multiple Choice
Which of these is found in the fire triangle and is therefore essential for combustion?
Oxygen
Water
Carbon dioxide
Hydrogen
- 7. Multiple Choice
What is produced when a fuel burns in a very good supply of oxygen?
Carbon monoxide and water
Carbon and water
Carbon dioxide and water
Oxygen and water
- 8. Multiple Choice
Which type of combustion releases the most energy?
Complete combustion
Incomplete combustion
Thermal decomposition
Total combustion
- 9. Multiple Choice
A teacher finishes using a Bunsen burner and (unwisely) blows it out before switching off the gas. By blowing on the flame to extinguish it, which part of the fire triangle is being removed?
Heat
Triangle
Fuel
Oxygen
- 10. Multiple Choice
What method should be used to extinguish an electrical fire?
Carbon dioxide
Water
Turning off the appliance
Blowing on it
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