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Year 8 End of Year Exam Revision > Science - Chemical Reactions > Flashcards

Science - Chemical Reactions Flashcards

1
Q

Which types of chemicals can react with acids during a
neutralisation reaction?

A

Alkalis or a base

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2
Q

What two types of elements are there in the Periodic Table?

A

Metals and Non-metals

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3
Q

What are the rows of the Periodic Table called?

A

Periods

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4
Q

What is the change in state that occurs when a gas turns into a
liquid?

A

Condensation

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5
Q

What are the columns of the Periodic Table called?

A

Groups

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6
Q

What happens when we go from one atomic number to another in the periodic table?

A

It increases by one

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7
Q

What are some properties of metals?

A

Shiny, conduct electricity, conduct heat, flexible, high melting point

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8
Q

What are some properties of non-metals?

A

Dull, do not conduct electricity, do not conduct heat, feeble, low melting point

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9
Q

What is a chemical element?

A

The smallest part of matter that retains specific chemical properties

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10
Q

Can chemical elements be broken down by chemical reactions?

A

Unlike chemical compounds, chemical elements cannot be broken down into simpler substances by any chemical reaction

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11
Q

Metal + oxygen

A

Metal oxide

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12
Q

Magnesium + oxygen

A

Magnesium oxide

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13
Q

What is the word equation for the burning of wood?

A

Wood + oxygen –> carbon dioxide + water

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14
Q

Charcoal + oxygen

A

Carbon dioxide

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15
Q

Sulfur + oxygen

A

Sulfur dioxide

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16
Q

(Metal) + (acid)

A

(Salt) + hydrogen

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17
Q

Magnesium + hydrochloric acid

A

Magnesium chloride + hydrogen

18
Q

Magnesium + sulfuric acid

A

Magnesium sulfate + hydrogen

19
Q

Magnesium + nitric acid

A

Magnesium nitrate + hydrogen

20
Q

What is an example of a solute, solvent, and solution?

A

Solute: Salt
Solvent: Water
Solution: Salt Water

21
Q

Potassium + zinc chloride

A

Potassium chloride + zinc

22
Q

Zinc + potassium chloride

A

(No reaction - potassium is a more reactive metal than zinc)

23
Q

Zinc + copper oxide

A

Zinc oxide + copper

24
Q

What is the reactivity table of metals and elements (from reactive to unreactive)?

A
  1. Potassium
  2. Sodium
  3. Lithium
  4. Calcium
  5. Magnesium
  6. Aluminium
  7. Zinc
  8. Iron
  9. Lead
  10. Copper
  11. Silver
  12. Gold
25
Q

What is a fuel?

A

An energy source which is a store of chemical energy

26
Q

What is combustion?

A

A reaction in which a fuel reacts with oxygen to release thermal energy and light energy

27
Q

What happens if there is plenty of oxygen in a combustion reaction?

A

The products will all be ‘carbon dioxide + water’ if there is enough oxygen

28
Q

Methane + oxygen

A

Carbon dioxide + water

29
Q

What is Thermal Decomposition?

A

Using heat to break something down

30
Q

Metal oxide + carbon dioxide

A

Metal carbonate

31
Q

What does an exothermic reaction release into the surroundings?

A

Heat energy

32
Q

What happens to the temperature in an exothermic reaction?

A

It increases

33
Q

What chemical reactions take place during an exothermic reaction?

A

Neutralisation & Combustion

34
Q

What happens to an exothermic reaction?

A

Condensing and freezing

35
Q

What does an endothermic reaction absorb from the surroundings?

A

Heat

36
Q

What happens to the temperature in an endothermic reaction?

A

It decreases

37
Q

Which chemical reactions take place in an endothermic reaction?

A

Thermal decomposition

38
Q

What happens to an endothermic reaction?

A

Melting and boiling

39
Q

What happens to the energy of particles when a gas is
cooled to form a liquid?

A

It loses its kinetic energy, so it can’t move around as much as it used to

40
Q

Calcium is a metal. What type of solution would calcium oxide
form?

A

Lime water

41
Q

What would happen to blue and red litmus paper if they tested
a solution of calcium oxide?

A

They’d both become blue

Year 8 End of Year Exam Revision (6 decks)

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