Natural solids
Compounds found in the Earth's crust
Organic substances
Exactly two of the above
2500
100
1000
2000
Size, shape, composition and colour
Size, shape, density and smell
Size, shape, texture and transparency
How they are manfactured
Be made up of indefinite proportion of elements
Be derived from organic materials
Occur naturally
Exactly two of the above
2
4
6
8
Key elements
Dense materials
Chemically bound compounds
Metallic materials
Brick
Glass
Gold
Coal
Organic
Inorganic
Solid
Exacty two of the above
Rocks containing gems
One of the required forms of minerals
Solids whose particles have a non-repeating pattern
Rare and valuable
True
False, they do not always have crystal form
False, they are found in the ocean
False, they can be aqueous
1-2 questions
3-4 questions
5-6 questions
More than 7 questions
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