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Question
Classify the following into elements, compounds and mixtures:
- Sodium
- Soil
- Sugar solution
- Silver
- Calcium carbonate
- Tin
- Silicon
- Coal
- Air
- Soap
- Methane
- Carbon dioxide
- Blood
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Solution
- Elements: An element is a substance made up of one type of atom.
(a) sodium, (d) silver, (f) tin, (g) silicon - Compounds: A compound is a substance made up of two or more types of atoms that are chemically bonded together to form molecules.
(e) Calcium carbonate, (k) methane, (j) soap, (l) carbon dioxide - Mixtures: A mixture is a combination of substances that are not chemically bonded together.
(c) Sugar solution, (b) soil, (i) air, (h) coal, (m) blood
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