Lab Practical

Question 1

1. Protective gear

Answer 1

Safety goggles during experiment
Closed shoes
Long hair up

Question 2

2. Locations and operating instructions of safety equipment

Answer 2

Fire extinguisher
Fire blankets 
Fire alarms 
Fire hoses
First aid kit
Eye washes and showers

Question 3

3. Location of telephone & emergency phone #’s

Answer 3

Campus security emergency
395-4555

Night escort
395-4554

Health center
395-4336

Question 4

4. burners and heating

Answer 4

Burners in the middle of the table top, don’t point test tubes towards you or others
Never heat directly of the bottom of test tube
Tilt and heat between top of liquid and bottom

Question 5

5. Follow experiment instructions carefully

Answer 5

Preread Chem procedures know safety hazards before lab, must be supervised

Question 6

6. Cleaning spills

Answer 6

Clean them immediately
Return equipment to original place
Keep table tops clean before you leave

Question 7

7. Same scale

Answer 7

Use same scale for accuracy throughout experiment, ensure it leveled, do not move,
Clean spills around it with paintbrush residue into trash.

Question 8

8. Accidents

Answer 8

Report all accidents big or small to instructor

Broken glass use dustpan and hand broom into glass receptacle

Question 9

9. Contamination

Answer 9

Never return chemicals to its origin
If my extra share or dispose
Check label to make sure it’s the right one
Dispose of correctly

Question 10

10. Mixing acids and bases

Answer 10

Always add concentrations of acids and bases to H2O slowly to avoid splattering

Question 11

11 Lids

Answer 11

Flip them upside down to avoid contamination
If you removed it screw it back on
Use designated spatula and droppers with own bottles to avoid switching

Question 12

12. Food or drink

Answer 12

Never food or drink in lab nothing in your mouth not pencils, gum, food, equipment, solutions etc, contamination

Question 13

13. Exits

Answer 13

Proceed to nearest exit and stand away from building
Earthquake lean duck against desk cover face
Keep workspace clear

Question 14

Length

Answer 14

Estimate smallest marking

2 places after decimal

Question 15

Volume

Answer 15

1 place after decimal

Question 16

Mass

Answer 16

Estimate last sig fig digit

What you see

Question 17

Temperature

Answer 17

same decimal place

Question 18

Density

Answer 18

D=M/V

Question 19

Displacement

Answer 19

45.0mL-35.0mL=10mL

70/10=7mL

Question 20

Beakers

Answer 20

• 50mL
• 100mL
• 250mL
• 400mL

Question 21

Test tube rack

Answer 21

1

Question 22

Test tubes Small

Answer 22

6

Question 23

Test tubes Large

Answer 23

6

Question 24

Thick walled test tube

Answer 24

1

Question 25

Watch glass

Answer 25

2

Question 26

Graduated cylinder 10mL

Answer 26

1

Question 27

Graduated cylinder 100mL

Answer 27

1

Question 28

Erlenmeyer Flask 125mL

Answer 28

2

Question 29

Evaporating dish

Answer 29

2

Question 30

Clay triangle

Answer 30

1

Question 31

Spatula

Answer 31

1

Question 32

Test tube brush

Answer 32

2

Question 33

Stirring Rod 1

Answer 33

1

Question 34

Test tube holder

Answer 34

1

Question 35

Forceps

Answer 35

1

Question 36

Pinch clamp

Answer 36

2

Question 37

Matches

Answer 37

1

Question 38

Water bottle

Answer 38

1