Q: Bromine is much less abundant than fluorine or chlorine, but it is easily recovered from seawater, which contains about 65 mg of br per what? Choices: - pound - foot - gallon - liter A:
liter

(Question)
Q: Pressure is defined as the force per unit area on? Choices: - weight - gravity - speed - surface A:
(Answer)
surface

Ques: Q: The negative logarithm of the hydroxide-ion concentration of a solution is called? Choices: - the hil - the hop - the piel - the poh A:
Ans: the poh

(Q).
Q: What word describes a molecule that repels polar water? Choices: - monophobic - hydrophonic - soluble - hydrophobic A:
(A).
hydrophobic

Ques:Q: What type of light is composed of many rays having random polarization directions? Choices: - reflected light - polarized light - diffracted light - unpolarized light A:

Ans:unpolarized light

Q: What are made from highly reflective metal that is applied to a curved or flat piece of glass? Choices: - lenses - kaleidoscopes - prisms - mirrors A:
mirrors