Review for End of Year Chemistry Exam

Spilled acid or corrosive materials on the body should be

• cleaned up by your lab partner

• wiped up with paper towles

• left for the next period to take care of

• washed off immediately with water

• none of these answers are correct

Volatile or poisonous substances should be handled

• in the lab area

• at the demonstration table

• under the fume hood

• only by the teacher

• none of these answers are correct

The following are permitted in the lab working areas

• Gum

• Bottled water

• Candy

• all food is permitted in the lab

• no food or drink is permitted in the lab

When using a Bunsen burner one should

• light only with a striker

• turn off flame when not in use

• keep your hair/clothing away from the flame

• none of these answers are correct

• all of the given options are correct

Any accident, no matter how small, should be

• reported to the teacher

• ignored

• blamed on your lab partner

• reported to the nurse

• laughed at

The closeness of a measurement to its true value is a measure of its

• precision

• reproducibility

• accuracy

• usefulness

• grams

Determine how many grams of KNO₃ would dissolve in 100 grams of water at 50⁰ C to make a saturated solution.

• 60 grams

• 50 grams

• 20 grams

• 10 grams

• 80 grams

Which phrase describes a homogeneous mixture?

• contains two or more compounds

• is uniform in composition

• cannot change state easily

• contains only one element

• mixed correctly in nature compared to nonreality

A sample substance is a blend of three kinds of matter. Each kind of matter kept is own identity and properties. How would you classify the sample?

• compound

• pure substance

• element

• mixture

• trio bandito

Which is NOT a volume unit?

• gallon

• mL

• L

• cm

• cm³