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- 1. Multiple ChoiceAnother term for burning isFire triangleMagnesium oxideCombustionBustion
- 2. Multiple Choice
In this chemical reaction, which is the product/s?
Magnesium + Oxygen --> Magnesium oxide
magnesium
magnesium and oxygen
magnesium oxide
oxygen
- 3. Multiple Choice
Three things that are needed for combustion are:
oxygen, nitrogen and carbon dioxide
fuel, oxygen and carbon dioxide
fuel, heat and oxygen
fuel, heat and carbon dioxide
- 4. Multiple Choice
What does a fuel need in order to burn?
fuel
electricity
oxygen
hydrogen
- 5. Multiple Choice
magnesium + oxygen --> magnesium oxide
If you started with 5g of magnesium and 2.5g of oxygen, what mass of magnesium oxide would be produced?
5g
2.5g
7.5g
10g
- 6. Multiple Choice
Hydrocarbons are fuels containing only:
carbon and oxygen
carbon and hydrogen
carbon dioxide and hydrogen
hydrogen and nitrogen
- 7. Multiple ChoiceWhich of the following is the product of the reaction of aluminium and oxygen?aluminium oxide.metal oxidealuminium orealuminium and oxygen
- 8. Multiple Choice
What is the scientific term given when something burns?
a fuel
flammable
combustion
heating
- 9. Multiple ChoiceHow are metal oxides formed?When metals react with oxide.When metals react with water.When metals react with air.When metals react with oxygen.
- 10. Multiple ChoiceWhich of the following reactions produces calcium oxide?calcium and oxidecalcium and watercalcium and aircalcium and oxygen
- 11. Multiple ChoiceWhich of the following defines oxidation?A chemical reaction where a substance gains oxygen.A chemical reaction where a substance loses oxygen.A chemical reaction where a substance loses a metal.A chemical reaction where a substance gains a metal.
- 12. Multiple ChoiceWhich of the following is an example of an oxidation reaction?Ca + O2 --> CaONa2O + H2O --> NaOHFe2O3 + CO --> Fe + CO2All of the choices are oxidation reactions.
- 13. Multiple ChoiceThe rusting of iron is an example ofa reduction reaction.an oxidation reaction.a reaction of iron with water.a reaction that dissolves iron.
- 14. Multiple Choice
In a word equation, the starting chemicals are called...
reactants
products
ingredients
- 15. Multiple Choice
What was the chemical name given to Rust ?
Carbon
Iron Oxide
Iron Oxygen
Magnesium Oxide
- 16. Multiple Choice
True or false: A change in state is a chemical reaction
True - something melting would be an example of a chemical reaction
False - a change in state is a physical change
- 17. Multiple Choice
What are the reactants in rust?
iron
oxygen
dust
carrots
- 18. Multiple Choice
The combustion of hydrocarbons produces 2 things:
nitrogen and carbon dioxide
water and hydrogen
nitrogen and hydrogen
water and carbon dioxide
- 19. Multiple Choice
What is essential for a combustion reaction to begin?Carbon dioxideFuelFuel, oxygen and heatWater and oxygen - 20. Multiple Choice
The word equation for combustion is:
fuel + oxygen --> water + ..........................................
Carbon dioxide
Limewater
Hydrogen
Nitrogen
- 21. Multiple Choice
What two things cause iron to rust ?
Air and Oxygen
Water and Carbon dioxide
Oxygen and Water
Carbon dioxide and Air
- 22. Multiple ChoiceWhich type of metal doesn't rust at all?steelironcopper
- 23. Multiple Choice
In which tube will the nail go rusty?
The nail in tube A will go rusty.
The nail in tube B will go rusty.
The nail in tube C will go rusty.
- 24. Multiple Choice
Galvanization is the process of applying a _______ coating to steel or iron.
water
salt
sunscreen
zinc
- 25. Multiple Choice
What environmental element assists rusting?
nitrogen
oxygen
carbon
hydrogen
- 26. Multiple Choice
Which of the following items will rust?
A plastic bottle
A gold ring
An iron bridge
A cardboard box
- 27. Multiple Choice
Do all metals rust?
Yes
No
- 28. Multiple Choice
The picture shows an investigation into the conditions required for rusting. What is the purpose of the calcium chloride in test tube C?
To absorb moisture
To give out carbon dioxide
To absorb oxygen
To give out oxygen
- 29. Multiple Choice
Look at the picture. From what you see, choose which things are needed for rusting to occur.
water only
oxygen only
oil and water
water and oxygen
- 30. Multiple Choice
Fill in the blanks;
Iron + __________ + __________ = Iron oxide
oil + water
water + carbon dixoide
oxygen + oil
water + oxygen
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