Chemical Reactions MTA Flashcards

1
Q

What type of reaction is shown below?

methane + oxygen → carbon dioxide + water

A

Combustion

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2
Q

Complete this thermal decomposition reaction.

Copper carbonate → ____________________ + _________________

A

copper oxide + carbon dioxide

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3
Q

Complete the equation:

hydrogen + oxygen → ___________

A

water

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4
Q

In the reaction below, what are the reactants?

methane + oxygen → carbon dioxide + water

A

Methane + Oxygen

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5
Q

In the reaction below, what are the products?

methane + oxygen → carbon dioxide + water

A

carbon dioxide and water

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6
Q

Give an example of a physical change that is not a chemical reaction

A
  • Change of state (e.g. melting, boiling e.t.c)
  • Dissolving
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7
Q

Name the poisonous gas released in incomplete combustion

A

carbon monoxide

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8
Q

What type of combustion occurs when there is not enough oxygen present?

A

Incomplete combustion

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9
Q

What are the products of combustion?

A

Carbon dioxide and water

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10
Q

What are the chemicals that are reacted together in a chemical reaction called?

A

Reactants

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11
Q

What are the products of incomplete combustion?

A

carbon monoxide + carbon + water

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12
Q

Give five ways in which you know a chemical reaction has occurred.

A
  • Smell
  • Temperature change
  • Fizzing
  • Solid produced
  • Colour change
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13
Q

What name is given to a substance that speeds up a reaction?

A

Catalyst

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14
Q

Name the reaction when heat breaks down a compound

A

Thermal decomposition

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15
Q

Where does the oxygen for combustion come from?

A

The air

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16
Q

Complete the combustion equation:

propane + oxygen → _____________ + _____________

A

carbon dioxide + water

17
Q

What are the chemicals that are produced in a chemical reaction called?

A

Products

18
Q

What two elements are in methane, CH4?

A

Carbon and hydrogen

19
Q

What is a reaction called when a substance reacts with oxygen?

A

Oxidation

20
Q

What environmental problem does releasing carbon dioxide cause?

A

Global warming

21
Q

What name is given to a reaction that releases heat energy?

A

Exothermic

22
Q

What name is given to a reaction that takes in heat energy?

A

Endothermic

23
Q

What will happen to the temperature of the surroundings in an exothermic reaction?

A

Heat up

24
Q

What will happen to the temperature of the surroundings in an endothermic reaction?

A

Cool down

25
Q

Is combustion exothermic or endothermic?

A

Exothermic

26
Q

Is thermal decomposition exothermic or endothermic?

A

Endothermic

27
Q

What type of reaction does a sports injury pack use?

A

Endothermic

28
Q

What type of reaction does a hand warmer use?

A

Exothermic

29
Q

What is the conservation of mass?

A

Mass of reactants = Mass of products

30
Q

methane + oxygen → carbon dioxide + water

If 16 g of methane reacts with 64 g of oxygen, 44 g of carbon dioxide is made. How much water is made?

A

36 g

(because of the conservation of mass)