Question

1. state whether each of the following laboratory safety precautions is true or false. (a) wear safety goggles in the laboratory. (b) wear closed - toe shoes in the laboratory. (c) do not bring food or drink into the laboratory. (d) note the location of the fire extinguisher(s) in the laboratory. (e) note the location of the first - aid equipment in the laboratory. (f) do not perform unauthorized experiments. (g) waft a gas toward your nose when detecting an odor. (h) perform experiments that produce a gas under a fume hood. (i) when heating a test tube, point the open end in a safe direction. (j) always pour an acid into water - not water into acid. (k) clean up broken glass immediately. (l) do not use an organic liquid near an open flame in the laboratory. (m) if you contact a chemical, wash with water and notify the instructor. (n) notify the instructor immediately in the event of an accident. 2. which of the following chemicals should be handled carefully in the laboratory? (a) acids (b) bases (c) alcohol (d) distilled water

Explanation:

1.
(a) Safety goggles protect eyes from chemicals and flying debris, so it's true.
(b) Closed - toe shoes protect feet from spills and broken glass, true.
(c) Food and drink can be contaminated in a lab, true.
(d) Knowing fire extinguisher location is crucial for safety, true.
(e) Knowing first - aid location helps in emergencies, true.
(f) Unauthorized experiments can be dangerous, true.
(g) Wafting is a safe way to detect odors, true.
(h) Fume hoods remove harmful gases, true.
(i) Pointing test tube away from people is safe, true.
(j) Pouring acid into water is correct to prevent splashing, true.
(k) Cleaning broken glass immediately prevents injury, true.
(l) Organic liquids near open flames are flammable, true.
(m) Washing and notifying after chemical contact is proper, true.
(n) Notifying instructor in an accident is necessary, true.

1. Acids, bases, and alcohol are hazardous. Acids can burn, bases can react violently, and alcohol is flammable. Distilled water is relatively harmless.

Answer:

1.
(a) True
(b) True
(c) True
(d) True
(e) True
(f) True
(g) True
(h) True
(i) True
(j) True
(k) True
(l) True
(m) True
(n) True
2.
(a) acids
(b) bases
(c) alcohol