Well, after posting a lot about biological facts, lets move on to Chemistry now. Chemistry, mainly dealing with chemicals, is a branch of physical science that studies the composition, structure, properties and change of matter. It is such a fascinating science subject and mainly concerned about atoms and molecules. So, now, without further delay, lets look at some facts about chemistry ( or chemicals )..
1. Unlike many substances, water expands as it freezes. An ice cube takes up about 9% more volume than the water used to make it.
2. If you pour a handful of salt into a full glass of water, the water level will actually go down rather than overflowing the glass.
3. The only letter that doesn't appear on the periodic table is letter J.
4. The human body contains enough carbon to provide 'lead' (which is really graphite) for about 9,000 pencils.
5. The rarest naturally-occurring element in the earth's crust may be astatine. The entire crust appears to contain about 28 g of the element.
6. Lightning strikes produce O3, which is ozone, and strengthen the ozone layer of the atmosphere.
7. The only elements that are liquid at room temperature are bromine and mercury. However, you can melt gallium by holding a lump in the warmth of your hand.
1. Unlike many substances, water expands as it freezes. An ice cube takes up about 9% more volume than the water used to make it.
2. If you pour a handful of salt into a full glass of water, the water level will actually go down rather than overflowing the glass.
3. The only letter that doesn't appear on the periodic table is letter J.
4. The human body contains enough carbon to provide 'lead' (which is really graphite) for about 9,000 pencils.
5. The rarest naturally-occurring element in the earth's crust may be astatine. The entire crust appears to contain about 28 g of the element.
6. Lightning strikes produce O3, which is ozone, and strengthen the ozone layer of the atmosphere.
7. The only elements that are liquid at room temperature are bromine and mercury. However, you can melt gallium by holding a lump in the warmth of your hand.
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