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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Describe how metals are generally found in nature.
Describe the difference between the occurrence of metals and non-metals in nature.
Describe why some metals are found in free state while others are found as compounds in nature.
Explain why gold is found in its native state in nature.
Explain why metals like iron are found as oxides or sulphides in nature.
Explain why sodium and potassium are not found free in nature.
Name one metal that is always found combined with other elements in nature and never in its free state.
Name one metal that is found in the Earth's crust mainly as sulphide ores.
Which of the following is a common ore of copper? (1) Galena (2) Bauxite (3) Malachite (4) Magnetite
Which of the following is a metal that is found in its pure (native) form in nature? (1) Iron (2) Gold (3) Sodium (4) Magnesium
Which of the following is a non-metal that is found dissolved in water and is essential for life? (1) Oxygen (2) Nitrogen (3) Carbon dioxide (4) All of these
Which of the following is a non-metal that is found in the form of a diatomic molecule in the atmosphere? (1) Nitrogen (2) Sulphur (3) Phosphorus (4) Carbon
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 iron is __________.
Fill in the blank: The main ore of lead is __________.
True or False: All metals are found in nature in the form of ores.
True or False: Gold and platinum are called noble metals because they are unreactive and found in free state in nature.
True or False: Metals are generally good conductors of electricity and are found in nature as ores.
True or False: Most metals are found in nature as free elements.
