IPC Unit 1 Test Review

Question 1

Why is it important to waft vapors?

Question 1 Answer

To protect the respiratory tract!

Question 2

Why is important to use clean glassware and store it properly?

Question 2 Answer

To prevent contamination

Question 3

When boiling water and using a thermometer, what safety precautions should you take?

Question 3 Answer

Fire blanket, goggles, lab apron, know where the safety equipment is located

Question 4:Which piece(s) of glassware would measure volume? Triple beam balance Beaker Hot plate Bunsen burner Graduated cylinder

Question 4 Answer Beaker Graduated Cylinder

Question 5Which piece of glassware

would give you the most precise measurements?BeakerPipetteGraduated Cylinder

Question 5 Answer

Graduated Cylinder

Question 6When using chemicals, do

you ever put the chemicals back into the original container?

Question 6 Answer

NO!

Question 7Before you mass something on an balance, what should you do?

Question 7 Answer

Protect the balance with weigh paper or a paper towel

Question 8Which measurements are

precise?31, 35, 3256, 59, 5845.1, 44.9, 45.078, 71, 64

Question 8 Answer

45.1, 44.9, 45.0

Question 9To get an accurate reading from a graduated cylinder, what do you read?

Question 9 Answer

Meniscus

Question 10 What is the volume on this graduated

cylinder?

Question 10 Answer

21.2 mL

Question 11 Which group is the most precise?

Density (g/mL)

Group 1 Group 2 Group 3

Trial 1 0.889 1.045 1.082

Trial 2 1.012 1.046 1.023

Trial 3 1.065 1.044 1.085

Average 0.988 1.045 1.063

Question 11 AnswerGroup 2

Density (g/mL)

Group 1 Group 2 Group 3

Trial 1 0.889 1.045 1.082

Trial 2 1.012 1.046 1.023

Trial 3 1.065 1.044 1.085

Average 0.988 1.045 1.063

Question 12 If you are precise, are you accurate?

Question 12 Answer

NO!

Question 13 If you are accurate, are you precise?

Question 13 Answer

YES!

Question 14 Changing phase from solid to gas

Question 14 Answer Sublimation

Question 15 Liquid to Gas

Question 15 Answer Evaporation (through the boiling

process)

Question 16 Gas to Liquid

Question 16 Answer Condensation

Question 17 Gas to Solid

Question 17 Answer Deposition

For the next questions, determine whether the answer is a solid, liquid or gas…

Question 18 Particles vibrate

Question 18 Answer Solid

Question 19 Particles vibrate and can slide past each

other

Question 19 Answer Liquid

Question 20 No definite shape or volume

Question 20 Answer Gas

Question 21 Particles arranged in a definite pattern

Question 21 Answer Solid

Question 22 Particles move freely

Question 22 Answer Gas

Question 23 Particles can form crystals

Question 23 Answer Solids

Question 24 Particles have definite shape but no

definite volume

Question 24 Answer Liquids