Occurrence of Metals and Non-metals in Nature
Chemistry ⇒ Metals and Non-metals
Occurrence of Metals and Non-metals in Nature starts at 6 and continues till grade 12.
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See sample questions for grade 8
Describe the difference between a mineral and an ore.
Explain why highly reactive metals are not found in their free state in nature.
Explain why metals like sodium and potassium are stored under oil after extraction.
Explain why noble metals like gold and platinum are found in their native state in nature.
Name one metal that is commonly found dissolved in seawater.
Name one non-metal that is essential for the formation of proteins in living organisms.
Name one non-metal that is found in nature as a yellow solid near volcanic regions.
A student finds a shiny, yellow metal nugget in a riverbed. Based on its appearance and natural occurrence, which metal is it most likely to be?
(1) Iron
(2) Gold
(3) Copper
(4) Aluminium
Which of the following is a common non-metal found in the Earth's crust?
(1) Iron
(2) Silicon
(3) Gold
(4) Mercury
Which of the following is a non-metal found in the form of allotropes in nature?
(1) Iron
(2) Carbon
(3) Sodium
(4) Magnesium
Which of the following is a non-metal that is essential for combustion?
(1) Nitrogen
(2) Oxygen
(3) Sulphur
(4) Carbon
Which of the following is a property of metals that affects their occurrence in nature?
(1) Reactivity
(2) Colour
(3) Hardness
(4) Density
Fill in the blank: The main ore of aluminium is __________.
Fill in the blank: The main ore of copper is __________.
Fill in the blank: The main ore of lead is __________.
Fill in the blank: The main ore of magnesium is __________.
True or False: All metals are found in nature as oxides.
True or False: All non-metals are gases at room temperature.
True or False: Gold is found in nature only as a compound.
True or False: Mercury is the only metal that is liquid at room temperature and is found in nature as cinnabar ore.
