W 8-26 and Th 8-27Lab Safety and Lab

EquipmentMrs. Wilson

The hand signal

•If I need your quiet attention,I’ll raise my hand and stop speaking.•If you raise your hand and go quiet, we can get started quicker!

Preamble to Daily Quiz 1-2•Procedure:- Obtain a purple Chemistry Daily Quiz form. Write your name

on it. Obtain a periodic table – you won’t use it to refer to anything, but you can use it to cover your sheet.

- Obtain a yellow calculator or use your own scientific or graphing calculator – no phones.

-Do not copy the question. Please refrain from talking.- Clearly write your work and your answer.- Follow the LASA honor code.- Flip over your purple form when you are finished.

Daily Quiz 1-2 • On other PowerPoint

To “grade” or not to “grade?”We can switch papers and “grade” it together.

You will need to hold on to the purple sheet.

Turn in Contracts and Items

•Return the periodic table.•If you have it, turn in your signed Lab Safety Contract.•If you have it, turn in your tissue box (A day) or Lysol-type wipes (B day)

Agenda1. Daily Quiz 1-22. Turn in contracts and items3. Objectives4. Lab Safety

- Rules - Prevention

- MSDS, NFPT, Chemical Label Interpretation4. Lab Equipment Kahoot5. Exit Ticket

Objectives 1.Describe and understand common lab safety rules and preventative measures.

2.Read and interpret Material Safety Data Sheets, National Fire Protection Association diagrams, and chemical labels.

3.Recognize common lab equipment, explain which quantity each piece measures, and select the best equipment to use in different lab situations.

HOMEWORK 1.2 Homework from packet• Major Quiz 1-3 next class (Friday 8-28 for B day; Monday 8-31 for A day).

Engage: Discuss with a partner - 1. Infer what happened to cause the scene in the picture.

2. Describe the role of safety labels in the laboratory.

Safety Labels•Pair up with a neighbor.• Examine each other’s safety labels. You can use your

phones to look at pictures of the labels.•Answer this question with your neighbor:

Why are safety labels put on “household” items even though we know we can be safe with them?

… because things like this happenWhen working in a chemistry lab – even a high school chemistry lab – you have to know and practice the following things:

1. The lab safety rules;2. Lab safety precautions and

practices;3. The hazards of the chemicals

involved;4. Where to find information on

the properties, hazards, and first aid practices you should follow,

5. How to use the lab equipment safely and correctly.

Read all the lab safety rules•You have five minutes to read ALL the lab safety rules on pgs 3 and 4. Watch the time!•Close your packet when you’re done.•Take out a sheet of paper and a pencil or pen. Write your full name, class period, and the date in the upper right hand corner of your page.

“Memory Box” the lab safety rules• Draw a giant rectangle on the main part of

your paper.• Title this page “Lab Safety Rules Memory

Box.”• Now write down everything you remember

from pages 3-4.

You have three minutes!

Lab Safety Rules Memory Box

NamePeriod Date

Give a Safety Rule, then get oneYou have five minutes (from when Mrs. Wilson starts the clock) to do the following:• Get up from your seat and take your memory box and pen/pencil

with you.• Get a partner, and compare your memory boxes.• Give a safety rule to your partner and have them write it down

inside the box.• Get a NEW safety rule from your partner and write it down inside

the box.• Get a new partner and repeat

Now get a new partner…

•… and sit with them.•You have three minutes to try to memorize everything in your memory box. Go!

With your new partner…• Switch memory boxes.•One person will tell the other person

everything they remember from their memory box. The other person will check their answers and coach.• Switch roles.•Keep switching until you’ve gone through all

the lab safety rules on your papers.

The hand signal•If I need your quiet attention,I’ll raise my hand and stop speaking.•If you raise your hand and go quiet, we can get started quicker!

With your partner, discuss…• If you were to write three “top” safety rules that could cover all (or almost all) hazardous lab situations, what would they be?•Write these “top three” rules in your memory box.•Now let’s discuss… what are your “top three” safety rules?

Back to your assigned seats•Put your lab safety rules memory box back in your

binder.•On pg. 4 is a large box and a question. Answer the

question in the box by yourself.

Pg 4: Classroom Map

•Switch packets with a partner and check each other’s labelled drawings. Feel free to correct them (gently) if it needs changing.•Let’s review where everything is and how to use it…

Notes: How to Use Safety Equipment

https://www.youtube.com/watch?v=IiHEYtnKfF0

1. Safety Shower2. Eyewash3. Fire Extinguisher

P A S S

4. Fire Blanket 5. Chemical Fumehood

Notes: How to Use Safety Equipment1. Safety Shower - Alert teacher; go immediately to shower; have a friend go with you to aid; remove clothing, jewelry; shower completely for at least 15 minutes.2. Eyewash - Similar procedure as #1. Lift eyelids to get water underneath them. Rinse for at least 10 minutes. 3. Fire Extinguisher

Pull the pin / Aim at the base / Squeeze handles/ Sweep

Notes: How to Use Safety Equipment

4. Fire Blanket Have the person stop. Wrap them in the fire blanket and have them roll in the blanket on the ground.

5. Chemical Fumehood This is a containment area that we use to isolate certain chemicals from the class environment. Turn the appropriate switch on to start the ventilation after the sash is closed. You can also work in the fumehood with the sash partly down to help protect your respiratory system.

MSDS and NFPA Rotation ACtivityObjective: Read and interpret MSDS and NFPA information.

Big Question: Which of the chemicals you read about is the MOST dangerous? Which is the least? What are your reasons for your choices?

bromine tannic acid magnesium nitrate acetic acid ammonium nitrate

lithium hydrochloric acid calcium carbide acetaldehyde sulfuric acid

• Form groups of no more than three people.• Send one person up to get a “MSDS” and a “NFPA” document for the same chemical.• Examine the documents closely. Write quick notes on the back of your lab safety memory box.

You have two minutes for each set.• Once all the sets have been to you, answer the “Big Question” with your group.

MSDS and NFPA Activity•Which of these chemicals is the most dangerous? What are your reasons?•Which is the least dangerous? What are your reasons?

MSDS and NFPA Activity

•Questions to Discuss: (Think Pair Share)1. What’s the purpose of the MSDS document? Of the NFPA diamond?2. What information is found on MSDS? On an NFPA diamond?3. When is the MSDS more important than the NFPA diamond?4. This is a chemical label. If we have MSDS and NFPA available, why have chemical labels?

Notes: MSDS and NFPA•MSDS = Material Safety Data Sheet- Name, formula, properties, safety precautions, first aid, toxicology, disposal, storage and measures to safeguard against fire, etc. - Primarily for lab workers

•NFPA = National Fire Protection Association “diamond”- Lists visual information for firefighters to refer to if a fire breaks out in an area marked by one. 1 – 4 rating. Red = flammability Blue = health hazardYellow = stability hazard White = special hazard

Notes: Warning symbols

Corrosive Flammable Acute (severe) risk

Toxic/Poisonous Explosive/Oxidizer Carcinogen

Lab Equipment (pg. 5)Get up, walk around to the lab tables, and examine the lab equipment in each blue lab tray.

You can pick up and examine the equipment. Find each piece, identify it by name, and identify its function. For example:

•Measures… (volume of liquids, mass of solids, length of solids)• Protects… (eyes, hands, body)• Filters mixtures• Holds chemicals•Used to pick up, stir, or heat chemicals

Lab Safety and Lab Equipment Kahoot•Take out your phone, open up a

web browser and go to kahoot.it

•Wait for a Game Pin to appear on the screen.

Exit Ticket 1. Why do we refrain from eating or drinking during a lab activity? What can we do if a chemical is accidentally ingested while that someone is eating or drinking?

End of Class Procedure: Complete and turn in your exit ticket by yourself. You may not use any notes. Put your books etc. away. Wait for dismissal. Please, no phones! Clean up your table. When you are dismissed by me (not the bell), push in your chairs straight as you leave. Homework: 1.2, pg. 37-38. You will have a Major Quiz at the beginning of next class.