Fundamental chemistry Lab 1 Worksheet PDF

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Laboratory Safety and Procedures PRE-LAB QUESTIONS 1. Mapping Laboratory Safety: Use the following page to draw a map identifying your safety elements and where you will complete your lab experiments. If you do not possess a safety item, indicate the location of the closest one that you can use. Use the list below to identify items on your map.

a. Clean, dry, uncluttered laboratory workspace

Kitchen counter

b. Window for ventilation

Kitchen Window

c. Trash can

Next to the counter

d. Sink (eye wash station)

Behind my kitchen counter.

e. First aid kit

Under cabinet in kitchen

f.

Fire extinguisher

In hallway of apartment

g. Phone

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Laboratory Safety and Procedures On hand

h. Storage location for your eScience Lab materials when not in use

Upstairs in closet.

i.

Computer

j.

Blanket that can be used to smother a fire (fire blanket)

n/a

k. Shower that can be used to wash off spilled chemicals (safety shower)

upstairs

l.

Exit door (Diagram on your map the route you will use to leave the building in case of an emergency.)

My door to exit is located right by the kitchen.

m. Smoke detector

Above front door.

n. Dust pan and broom

In pantry by the kitchen

2. What would you do if you spilled a tiny amount of hydrochloric acid on your hand?

Wash immediately with plenty of water.

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Laboratory Safety and Procedures 3. Describe a possible danger that can occur if you put food, soda, coffee, pencil erasers, etc. in your mouth while conducting your chemistry experiments.

If we put any of these foods or materials in our mouth while doing lab they can being hazardous. The reason why it becomes hazardous is because all the traces of the chemicals used in the experiment are being touched with out hands and all the materials being touched become exposed to chemical.

4. What information is given on a Safety Data Sheet?

The information given on the Safety Data Sheet is the protective measures we should take while in a experiment, safety precautions, chemical and physical property of the chemical. This includes the PPE required for us to wear while doing the experiment and Data sheet will also include the dangers of the chemicals and how they are toxic

5. List the optimum clothing, shoes, jewelry, and hair arrangement for your chemistry labs.

When doing a chemistry lab we should wear long-sleeve shirts and pants with lab apron, closed-toe shoes, remove all our jewelry long or short, long hair should always be tied back.

6. What is the date that your fire extinguisher was last examined?

I do not know the date.

7. How old are the batteries in your smoke detector?

New

8. List the contents from your first aid kit that you will use to treat a minor cut.

I will need hand sanitizer, clean cloths, bandages, antibiotics for cuts likes (Neosporin) , and gauzes pads

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Laboratory Safety and Procedures 9. List the contents from your first aid kit that you will use to treat a minor burn.

I will need cream for burns, antibiotic ointments, gauze pads or bandage, and somethingto relive the pain for the burn

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Laboratory Safety and Procedures EXPERIMENT 1 DATA SHEET Data Sheet Table 1. Initial pH Test Results Container

Chemical Contents

Initial pH

Additional Observations

A

Water

7

green

B

HCI

1

maroon

C

Sodium Bicarbonate

9

Darker green

Table 2. Neutralization of Acid Total Amount of NaHCO3 Added

Beaker C pH after adding acid

0.5 (initial solution)

4

1.0

5

1.5

7

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Laboratory Safety and Procedures Post-Lab Questions: 1. Most of the chemicals included in your Introductory Chemistry Lab kit can be discarded down a drain with copious amounts of water. Describe a situation in which you would need to neutralize a chemical (pH 7) before discarding down a drain.

Corrosive acids such as; HCl and H2SO4 should be neutralized first before discarding down the drain.This is because these acids can cause corrosion of pipes which may lead to huge leakage problems in the plumbing.These acids also have a very negative effect on the wildlife and environment , as this acidic water can lead to water body inhabited by aquatic wildlife.

10. Why should one add acid to water rather than add water to acid when preparing solutions?

When you mix acid with water, it's extremely important to add the acid to the water rather than the other way around. This is because acid and water react in a vigorous exothermic reaction, releasing heat, sometimes boiling the liquid. When you add water to acid, the water boils and the acid may splatter and splash!

11. At what point was the solution in beaker C neutralized?

When the pH hit 7 after 1.5 NaHCO3 was added.

12. Address the following scenarios:



If a stronger solution of sodium bicarbonate was used in beaker C, would it require more or less hydrochloric acid to neutralize? Why?

It would require less bicarbonate to neutralize the acid. Sodium bicarbonate is a basic salt, meaning that stronger solution will be more basic and Hydrochloric acid is a strong acid so hence require less Hydrochloric acid to neutralize it.



If a weaker solution of sodium bicarbonate was used in beaker C, would that solution require more or less hydrochloric acid to neutralize it? Why?

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Laboratory Safety and Procedures It would require more hydrochloric acid. For the same reason.

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