CHE’MYSTERY’
Why don’t we relax from our regular activities can check our memory with chemistry for a difference?
Here are some no expert questions, which could be fun answering…
1. If a fluorine atom has 10 neutrons and 9 protons, its atomic number is:
a. 9
b. 10
c. 90
d. 19
2. Acid + _______ = Salt + Water:
a. Metal
b. Nitrogen
c. Oxygen
d. Base
3. Which of the following is a chemical change?
a. Boiling of water
b. Freezing of water
c. Rusting of Iron
d. Dissolving of salt in water.
4. Solubility of a substance in a solvent increases with an increased temperature:
a. True
b. False
5. The Lead of a pencil contains
a. Carbon black
b. Lead
c. Graphite
d. Plastic
6. A pH below 7 indicates __?
a. Acidity
b. Alkalinity
c. Purity of solvent
d. Presence of molecules
December 28th, 2005 at 9:43 am
I answered 3 out of 6. and that makes me what ? a che’mystery’ solver ?
For qn.3, I thought the answer is ‘all of the above’. isnt it true ?
What do you think ? (Please do not reply to this by email. Post your views as a comment, so everyone reading this website reads it. Thanks.)