Question

1. A good definition of chemistry is the science that seeks to understand: A. what matter does by studying atoms and molecules and their interactions. B. what living organisms do by studying the molecules that make up the organism C. what the universe does by studying matter and energy. D the interactions of molecules for the sake of advancing human control over nature. E. none of the above 2. Which of the following will be found on a Material Safety Data Sheet (SD5)? A. Health hazards B. Precautions for Safe Handling and Use C. Fire and Explosion Hazard Data D. Toxicity E. All of the above 3. What is the volume of 12.8 g of a liquid that has a density of 0.789 g/ml2 Show your work A. 12.8 mL B. 16.2 mL C. 10.7 mL D. 13.6 mL E. none of the above Teachers just love it when students request the proper equipment when doing a laboratory. To impress your teacher, you ask for the item to the right as a 4. A. You know, it's in a drawer in the back B. gas flamer-up C. heater D. thingamajig I used to heat samples E. Bunsen burner 5. If the black lines in the picture at left just touch the rim of the penny, which of the following best describes the penny's diameter? A. Between O and 2 cm B. Between 1 and 2 cm C. Between 1.9 and 2.0 cm D. Between 1.92 and 1.94 cm E. Between 1.935 and 1.945 cm 0%.

Answer 1

If you find anything disturbing, ask me.

"Option 'A' is correct. ""what matter does by studying atoms and molecules and their interactions"" Option 'E' is correct. 'SDS' contain information on the potential hazards and how to work safely with the chemicals. Volume of liquid = Mass of liquid/Density of liquid = 12.89/0.789 g/ml = 16.22 ml Correct option is 'B' 16.2 ml Correct option is 'E'- Bunsen burner Correct option is 'E'- Between 1.935 and 1.945 cm (Because this value indicate more accurate and precise value.)"