nourishing obscurity

Let’s see now – Friday evening, tired after a long week.  I know, a physics, chemistry and biology quiz!!

1) If you are making soaps and detergents from scratch, one of your starting ingredients will be:

a) Potassium hydroxide.
b) Sodium hydroxide.
c) Sodium chloride.
d) Calcium carbonate.

2) The reason a granite block is mostly empty space is because the atoms in the granite are:

a) Held together by electrical forces
b) Invisible
c) Mostly empty space themselves
d) Not as close together as they could be

3) The sweat-blocking ingredient in antiperspirant is often:

a) An aluminum compound.
b) A calcium compound.
c) A magnesium compound.
d) A tin or stannous compound.

4) If two protons are removed from an oxygen nucleus, the result is:

a) Carbon
b) Neon
c) Nitrogen
d) Helium

5) Which of these hold bones together?

a) ligament
b) tendons
c) cartilage
d) synovial fluid

Answers: 1b, 2c, 3a, 4a, 5a

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