It's the return of the Thursday Quiz in its beloved classic form! A twelve item is-it-or-isn't-it test of your knowledge, reasoning, stamina, and moxie!
Remember always the Fundamental Rules of the Thursday Quiz:
1. The Thursday Quiz is a POP quiz. No research, Googling, Wikiing, or use of reference books. Violators will never be able to look at themselves in the mirror again.
Good heavens, Miss Sakamoto, it's:
2. Don't get all stressed out about it! It's supposed to be fun!
Twelve basic concepts from various branches of science are below. But ARE THEY are AREN'T they defined correctly?
1. Astronomical Unit (AU) - a unit of measurement based on the distance from Earth to Alpha Centauri, one of the nearest stars.
2. catalyst - A substance that increases the speed of a chemical reaction without being consumed by the reaction.
3. condensation - the process of a substance changing state from a liquid to a gas.
4. density - the ratio of the mass of an object to its volume.
5. electrolysis - the emission of an electrical charge by a molecule when its protons are separated from its neutrons.
6.emulsion - a substance comprised of droplets of one liquid suspended within another liquid.
7. inertia - the tendency of a body to remain at rest or to remain in motion unless acted upon by an external force.
8. inorganic compounds - compounds composed primarily of carbon.
9. ions - molecules that have a positive or negative charge due to an unequal number of protons and electrons.
10. isotopes - Atoms that have the same number of protons but different numbers of neutrons.
11. light year - The amount of time required for light or any other electromagnetic energy to travel one Astronomical Unit.
12. plane of the ecliptic - The surface area of a fluid through which waves can convey energy.
Postulate your hypotheses in the comments.