MATTER AROUND US

  
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1. A molecule containing more than 3 atoms are known as molecule.

2. On Earth , the three most abundant atoms are , oxygen, and .

3. Copper,Lead, tin, , iron, , gold, and calcium are examples of metals.

4. is shiny and also the hardest natural substance on earth.

5. Metalloids exhibit the properties of both metals and .

6. A compound is a pure substance that is formed when the atoms of two or more elements in definite proportions.

7. At room temperature water exist as while hydrogen and oxygen exist as .

8.Most metals are conductors of electricity.