CHM151 lab Exam 1 ACTUAL UPDATED QUESTIONS AND CORRECT ANSWERS
Qualitative noting observations such as color, color changes, hardness, whether heat is
liberated or absorbed, and odor.
, Quantitative noting the amount of a measurable change in mass, volume, or temperature, for
example, fro which the qualitative data are already known.
Four objectives in the laboratory 1. To develop the skills necessary to obtain and evaluate a reliable original result.
2. To record your results for future use.
3. To be able to draw conclusions regarding you results (with the aid of some
coaching and reading in the beginning.)
4. To learn to communicate your results critically and knowledgeably.
Safety Rule 1 Wear approved eye protection (including splash guards) at all times while in the
laboratory.
-must include shatterproof lenses and side shields.
-use fountain before the material runs behind your eyeglasses and into your eyes.
There is a "panic bar" for easy activation.
Safety rule 2 Wear shoes at all times
Safety rule 3 Eating, drinking, and smoking are strictly prohibited in the laboratory at all times.
Safety rule 4 Know where to find and how to use all safety and first-aid equipment.
Safety Rule 5 Consider all chemicals to be hazardous unless you are instructed otherwise.
Dispose of chemicals as directed by your instructor.
Safety rule 6 If chemicals come into contact with your skin or eyes, wash immediately with
copious amounts of water and then consult your laboratory instructor
Safety rule 7 Never taste anything. Never directly smell the source of any vapor or gas.
Safety rule 8 Perform in the fume exhaust hood any reactions involving skin-irritating or
dangerous chemicals, or unpleasant odors.
Exhaust hoods -have fans to exhaust fumes out of the hood and away from the user.
-used when studying noxious, hazardous and flammable materials.
-shatterproof glass window used as a shield to protect you from minor explosions
-toxic fumes are stored in the hood.
Qualitative noting observations such as color, color changes, hardness, whether heat is
liberated or absorbed, and odor.
, Quantitative noting the amount of a measurable change in mass, volume, or temperature, for
example, fro which the qualitative data are already known.
Four objectives in the laboratory 1. To develop the skills necessary to obtain and evaluate a reliable original result.
2. To record your results for future use.
3. To be able to draw conclusions regarding you results (with the aid of some
coaching and reading in the beginning.)
4. To learn to communicate your results critically and knowledgeably.
Safety Rule 1 Wear approved eye protection (including splash guards) at all times while in the
laboratory.
-must include shatterproof lenses and side shields.
-use fountain before the material runs behind your eyeglasses and into your eyes.
There is a "panic bar" for easy activation.
Safety rule 2 Wear shoes at all times
Safety rule 3 Eating, drinking, and smoking are strictly prohibited in the laboratory at all times.
Safety rule 4 Know where to find and how to use all safety and first-aid equipment.
Safety Rule 5 Consider all chemicals to be hazardous unless you are instructed otherwise.
Dispose of chemicals as directed by your instructor.
Safety rule 6 If chemicals come into contact with your skin or eyes, wash immediately with
copious amounts of water and then consult your laboratory instructor
Safety rule 7 Never taste anything. Never directly smell the source of any vapor or gas.
Safety rule 8 Perform in the fume exhaust hood any reactions involving skin-irritating or
dangerous chemicals, or unpleasant odors.
Exhaust hoods -have fans to exhaust fumes out of the hood and away from the user.
-used when studying noxious, hazardous and flammable materials.
-shatterproof glass window used as a shield to protect you from minor explosions
-toxic fumes are stored in the hood.
