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Chapter 4 Variety Resources On
Earth
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1. Name three resources on
Earth.
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__________________
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2. Name the resource of the
following
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3. Living things become the
_____________sources for
humans.
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4. Elements is made up of
______________________.
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5. Elements can be divided into 2
groups :-
a)_______________________
b)
_______________________
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6. - Copper / Iron?
- elements/ Compound ?
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7. Silver / Gold ?
Element/ Compound /
Mixture ?
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8. Which of the following is a
compound?A) Carbon dioxide B)
Bromine
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9. Sodium is a metal. Give 3 characteristic ofmetals.
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________________________________________________
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10. Element, Compound, or Mixture?
Salt
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11. Element, Compound, or Mixture?
Neon Gas
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12. Element, Compound, or Mixture?
Salad
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13. Element, Compound, or Mixture?
Pure Water
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14. Element, Compound, or Mixture?
Aluminum
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15. Element, Compound, or Mixture?
Lemonade
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16. Element, Compound, or Mixture?
Silver
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17. Element, Compound, or Mixture?
Sand
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18.An unknown, clear liquid is given to you in abeaker. You transfer the liquid from the beaker
to a clean, empty test-tube, and begin to heat it.
After a while, you see vapours (which on further
analysis you discover are vapours of water)
rising from the test-tube, and pretty soon, all
that's left are a few crystals of salt stuck to the
edges!
Was that liquid an element, compound or a
mixture?
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19. You have just won a block of pure 24-caratgold. Have
you just procured an element, compound or
mixture? Answer: (element, compound or mixture?)
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20. A dish is given to you, which contains ablackish-yellow powder. When you move a
magnet over it, you are amazed to see black
particles, (which you find out are iron) fly
upwards and get stuck to the magnet, and all
that's left in the dish is a yellow powder, which
you discover to be sulphur (sulfur).
Was your original powder an element,
compound or mixture?
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21. A substance is analysed in a laboratory, andwhen viewed under an electron microscope, it is
revealed that it contains only one kind of atom.
Is the substance an element, compound or
mixture?
Answer: (element, compound or mixture?)
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22. The air we breathe - is it an element,compound or mixture?
Answer: (element, compound or mixture?)
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23. A magnesium ribbon is burnt in the air,to form the greyish oxide of magnesium -
magnesium oxide (MgO). Is this oxide an
element, compound or a mixture?Answer: (element, compound or
mixture?)
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24. *Water* is what all life in theworld depends on. Is it an element,
compound or mixture?
Answer: (element, compound or
mixture?)