grade 10 Course Intro, WHMIS, Safety.ppt

SNC 2D
Gr. 10 Academic Science

Science Safety
Learning Goals …
… review course expectations, evaluation scheme, and
website
… review lab equipment, along with safe practices and
procedures when planning and
conducting scientific investigations

Units of Study
Unit 1: Chemistry Chemical Reactions
Unit 2: Physics Light and Geometric Optics
Unit 3: Biology Tissues, Organs, and Systems of Living Things
Unit 4: Earth & Space Climate Change

Unit Outlines and Class Website
At the start of every unit, you will be given an outline.
Our class website is www.loyolascience10.weebly.com
Password: 10hawks

Learning Skills – What Are They?

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Complete the table below. How many can you get right?

Lab Safety Equipment
Safety Shower Safety Goggles
Eye Wash

Lab Safety Equipment
Fire Extinguisher Fire Blanket Fume Hood

General Guidelines for a Safe Science Lab:
General Lab Rules
• Maintain quiet behavior during lab activity.
• Report all accidents to the teacher immediately
• Be familiar with the location and use of safety equipment.
• Never attempt unauthorized experiments. No lab work is allowed without
the teacher’s permission.
• Remain standing by the experiment. Do not sit on the lab benches and do not
bring chairs to the lab bench.
• Keep your work area clean, dry, and tidy.
• Do not borrow any equipment from other students. See the teacher if
additional equipment is needed.
• Report all broken and defective equipment to the teacher immediately.
Eye Safety
• Wear your laboratory safety glasses at all times.
• Know how to use the emergency eyewash system. If chemicals get into your
eyes, flush them out with plenty of water and inform your teacher.
St. Ignatius of Loyola CSS 15

Glassware Safety
• Check for broken, cracked, or chipped glassware. Report any
sharp edges to teacher immediately. It should be disposed of
properly.
• Do not force glass tubing into rubber stoppers.
Fire & Heating Safety
• Keep flames away from flammable materials.
• Tie back long hair and secure loose clothing.
• Do not reach across an open flame.
• Know the location and proper use of fire blankets and
extinguishers.
• Never leave a heat source unattended. Turn off heat sources
when they are not in use.
• Point test tubes away from yourself and others when heating
substances in them.
• Check to see if an object is hot before handling it.
• To avoid burns, do not handle heated glassware or materials
directly. Use tongs, test-tube holders, or heat resistant gloves.
• Never carry hot equipment through a congestion of students.

Chemical Safety
• Avoid direct contact with any chemical in any
way.
• Beware of unknown chemicals or what may look
like drops of water. They may be corrosive
liquids.
• Do not mix any chemicals unless directed to do
so in a procedure or by your teacher.
• Inform your teacher immediately if you spill chemicals or get any on your skin or
in your eyes.
• Never taste any chemicals or substances.
• Keep your hands away from your face when working with chemicals.
• Wash your hands before leaving the lab after an experiment has been
completed.
Electrical Safety
• Use care when using electrical equipment.
• Check all electrical equipment for worn cords or loose plugs before using them.
• Keep your work area dry.

Safety Equipment
• Know the location of all of the science lab safety equipment, including:
Classes of Fires
St. Ignatius of Loyola CSS
Science Safety
18
Class A fires are those fueled by materials that, when they
burn, leave a residue in the form of ash, such as paper, wood,
cloth, rubber, and certain plastics.
Class B fires involve flammable liquids and gasses, such as
gasoline, paint thinner, kitchen grease, propane, and
acetylene.
Class C fires are those that involve energized electrical wiring
or equipment (motors, computers, panel boxes)
Note: if the electricity to the equipment is cut, a Class C fire
becomes one of the other three types of fires.
Class D fires involve exotic metals, such as magnesium,
sodium, titanium.
 Eye Wash
 Fire Blankets
 Fire Extinguishers
 Fire Exits
 Telephone
 First Aid Kit

Type of Extinguisher How It Works
Classes of Fire
Water reduces temperature
CO2 displaces oxygen
Dry Chemical binds oxygen
Halon binds oxygen
Met-L-X (Sand) smothers fire
A B C D
X NEVER
X X
X X X
X X
X
To remember how to use a fire extinguisher, think of PASS.
P Pull the locking pin.
A Aim the nozzle at the base of the fire.
S Squeeze the trigger all the way closed.
S
Sweep the extinguisher discharge side to side over the area
of the fire.
Fire Extinguishers
• Different types of fire extinguishers extinguish the different types of fires.

Form A HCDSB Student Laboratory Safety Declaration
The HCDSB Student Laboratory Safety Declaration must be read, signed and dated by both
the student and the student’s parent/guardian, and returned to the teacher. Students
must return the signed safety declaration before they can participate in any laboratory
activities. The student should place the signed safety declaration near the front of their
notebook when it is returned by the teacher.
Read FORM A: Student Laboratory Declaration.
Have a parent/guardian sign the declaration.
Return the form to me.

Student Hazards Review Form
The Student Hazards Review Form should be completed before each laboratory activity.
The chemical/materials hazards, procedure hazards and equipment hazards should be
identified and appropriate control measures indicated. Chemical and/or biological waste
disposal instructions should be identified.

WHMIS

WHMIS Education and Training
• Get training regarding the hazards and hazardous materials in
your workplace
• If you are not offered training, ASK for it before using the
hazardous materials
• READ about the hazardous
products you work with or near, by
reviewing labels and SDSs
• ASK about what personal
protective equipment (PPE) you
need, how to wear it properly
• KNOW what to do in an
emergency, such as a spill or fire,
and learn where the safety
equipment is

Pictograms and Their Hazards
• Acute toxicity (fatal or toxic)
Skull and Crossbones
Health Hazard
• Carcinogenicity
• Germ Cell Mutagenicity
• Respiratory sensitization
Exclamation Mark
• Acute toxicity (harmful)
• Skin or eye irritation
• Skin sensitization
• Reproductive toxicity
• Specific target organ toxicity
• Aspiration hazard
• Specific target organ toxicity
• Hazardous to ozone layer

• Flammable
• Self-reactive
• Pyrophoric
Flame
• Emit flammable gases in
contact with water
• Organic peroxide  Self-heating
Flame over Circle
• Oxidizer
Exploding Bomb
• Explosive
• Self-reactive (severe)
• Pyrophoric (severe)

Corrosion
Biohazardous
Gas Cylinder
Environment
• Serious Eye Damage
• Skin corrosion
• Corrosion to metals
• Biohazardous
infectious
materials
• Gases under
pressure
• Aquatic toxicity

Supplier Labels
• A supplier label is provided or attached by the supplier and will appear on all
hazardous products
Product Identifier (as appears on SDS)
Hazard Pictograms
Signal Words
• “Danger” or “Warning” used to indicate
the severity of the hazard
Hazard Statements
• Brief standardized statements of all
hazards
Precautionary Statements
• Measures to minimize or prevent
adverse effects from exposure to
product including protective equipment
(PPE) and emergency procedures
Supplier Identifier

Safety Data Sheets (SDS) (formerly
MSDS)
Section Hazardous Product Regulations Heading
1 Identification
2 Hazard identification (including classification and label text)
3 Composition/information on ingredients
4 First-aid measures
5 Fire-fighting measures
6 Accidental release measures
7 Handling and storage
8 Exposure controls/personal protection
9 Physical and chemical properties
10 Stability and reactivity
11 Toxicological information
12-15 Ecological, transport and regulatory information, disposal considerations
16 Other information

Match the WHMIS Pictograms below with the
corresponding hazard:

YouTube Video:
WHMIS 2015 for Workers (4:11) from WorkSafeBC
https://www.youtube.com/watch?v=NRKFc4DMFH0
A quick WHMIS safety summary:
1. What is the hazard?
2. How do I protect myself?
3. What should I do if there is an accident?
4. How do I get more information?

Specific Guidelines for a Safe Biology Lab:
Care and Use of Animals
• Animals help students develop an appreciation for
diversity of life, a sense of caring, and skills of
observation.
• Appropriate animal selection, animal housing, animal
care, animal restraint, teacher supervision and human
hygiene must be practiced.
Source:
Safe on Science Second Edition A Reference Guide for Secondary School
Science, Science Teachers’ Association of Ontario, January, 2018, pp. 52-66.
Using Animal Materials
• Always wash hands thoroughly after handling animal specimens.
• Fresh or preserved animal organs (hearts, kidneys, etc.) obtained from
butchers or abattoirs may be dissected since these organs are inspected and
considered safe for human consumption.
• Preserved specimens obtained from scientific supply companies may be
dissected.

Dissection of Animal Specimens
• Always wear splash-proof goggles for eye protection.
• Always wear nitrile gloves.
• Always cover open cuts and sores with band aids.
• Always check for mold or bacteria on specimens. If mold or bacteria is
detected, do not use the specimen.
• Always work in a well ventilated lab.
• Use sharp scissors when possible instead of a scalpel.
• If a scalpel is necessary, only use a single sided scalpel blade.
• Always wash dissection instruments thoroughly when finished.
• Always wash hands thoroughly after handling animal specimens.
• Always dispose of specimens as directed by the teacher.
Using Microorganisms and DNA
• Only safe, approved microorganisms in Risk Group RG-1 purchased from
scientific supply companies may be grown.
• DNA may only be extracted from plants.
• All regular general lab safety practices must be followed when growing RG-1
microorganisms or using DNA.
• Always wash hands thoroughly after handling microorganisms or DNA.
• Always dispose of microorganisms and DNA as directed by the teacher.

Use and Care of Microscopes
• Always carry the microscope by its arm and base.
• Place the microscope near the centre of the lab bench.
• Use microscopes with attached light sources.
• Handle glass slides carefully.
• Relieve eyestrain by keeping both eyes open.
• Check that ground pins are in place and unplug by grasping the plug not the
cord.
• Store microscopes with objective lens on low power and with the dust cover
on.
Plants
• Avoid poisonous plants and be aware of allergenic plants.
• Take care when using biological stains as they may stain skin and clothing
• Always wash hands thoroughly after handling plants.
• Always dispose of plants as directed by the teacher.

YouTube Video:
Biological Lab Safety (8:53)
https://www.youtube.com/watch?v=ZZsuiaz0zkQ
A quick biology safety summary:
1. Always wear splash-proof goggles when dissecting biological specimens.
2. Always wear nitrile gloves when handling any biological specimens.
3. Always cover cuts and sores with waterproof band aids.
4. Always wash your hands thoroughly after handling any biological specimens.
5. Always follow the direction of your teacher regarding the handling and
disposal of any biological specimens.

Specific Guidelines for a Safe Chemistry Lab:
Heating Substances
• Bunsen burners may be used after proper instruction from your
teacher. They should be lit with flint lighters, wooden matches or long
nosed BBQ lighters.
• Electric hot plates may be used but caution should be exercised when
heating flammable liquids.
• Hot water baths are preferred for heating flammable liquids.
• Dedicated lab-use electric kettles, labelled “For Lab Use Only”, may be
used to heat water.
• Infrared lamps may be used to evaporate liquids.
• Other heat sources, (e.g., candles, etc.) must be approved before use.
• Fire extinguishers and dry sand must be available when heating
substances.
• Portable bottled-gas burners, alcohol burners, camping stoves and solid
fuel burners are prohibited.
• The proper techniques for heating solids in test tubes, small quantities
of solids on spoons, stoppered test tubes or flasks, and flammable
liquids must be taught prior to heating.
Source:

Heating Substances continued …
Safety Code for Heating Substances
• Heat substances under close teacher supervision only.
• Be aware of hot equipment as a burn hazard.
• Always stand at heating stations for quick evacuation in case of accident.
• Always wear chemical splash-proof goggles to protect the eyes.
• Always point test tubes away from people while heating contents.
• Do not use open flames to heat flammable liquids.
• Use small samples only.
• Always use “Pyrex” or equivalent glassware.
• Do not look into any heating vessel.
• Do not leave open flames unattended.
• Always tie back and secure long hair and clothing.
• Always switch off hot plates immediately after use.
• Always inform the teacher immediately in the case of burns or other injuries.
• Never place a glass thermometer in a flame.

Using Chemicals
• Wear any additional personal protective equipment (gloves, aprons, lab coats,
etc.) as instructed by the teacher.
• Always check the SDS prior to use of chemicals.
• Always follow teacher instructions for dispensing and disposing of chemicals.
• Flammable liquids must only be used in well ventilated laboratories.
• Always inform the teacher of any spill and follow teacher instruction for clean-up
of chemical spills.
• Always follow appropriate procedures for heating chemicals.
• Always follow teacher instruction for identifying gases and vapours by wafting.
• Never inhale gases or vapours.
• Always use pipets as instructed by the teacher. Never fill pipets by mouth.
• Always secure burets properly.
• Always fill burets with a funnel, with the top of the buret lowered to eye levelor
lower prior to filling.
• Never use compressed gas cylinders.

Using Chemicals continued …
Safety Code for Chemical Use
• Dilute acids slowly adding acid to water.
• Add solute to solvent when dissolving solid chemicals.
• Use a scoopula to handle solid chemicals not fingers.
• Pour chemicals opposite the label to prevent label damage.
• Use the smallest chemical quantities possible.
• Never return excess chemical to a stock container to avoid contamination.
• Never smell chemicals directly.
• Never taste a chemical.
• Consult SDS prior to use of chemicals.
• Wear any additional personal protective equipment (gloves, aprons, lab coats,
etc.) as instructed by the teacher.
• Always use mechanical suction when pipetting. Never pipet by mouth.
• Report all spills immediately to the teacher.
• Always wash hands after chemical use.
• Dispose of all chemicals as directed by the teacher.

Hazardous Chemicals
• Only use chemicals that are approved for use by the Halton Catholic District
School Board.
• Always consult safety data sheets for all chemicals being used to assess the
hazards and to take appropriate measures to use the chemicals safely.
• Know the WHMIS classification system.
• Report any unusual odours to the teacher immediately.
• Exercise appropriate caution when using flammable liquids (flash point below
37.8°C) or combustible liquids (flash above 37.8°C).
Chemical Disposal
• Dispose of all chemicals as directed by the teacher.

YouTube Video:
Lab Techniques & Safety: Crash Course Chemistry #21 (9:02)
https://www.youtube.com/watch?v=VRWRmIEHr3A
A quick chemistry safety summary:
1. Always wear splash-proof goggles when using chemicals.
2. Always wear nitrile gloves when directed by the teacher.
3. Always cover cuts and sores with waterproof band aids.
4. Always wash your hands thoroughly after handling any chemicals.
5. Always follow the direction of your teacher regarding the handling and
disposal of any chemicals.

Specific Guidelines for a Safe Earth and Space
Science Lab:
Radiation Hazards
Ultraviolet Radiation (UVR)
• Never look at the sun or a full or partial solar eclipses
without a protective device specifically designed to protect
your eyes from the damaging rays of the sun. Damage to
the retina can lead to permanent blindness.
• The sun can be viewed using pinhole cameras.
• Never view the sun through a binoculars or a telescope
unless the appropriate solar filters have been installed on
the viewing device.
Source:
Science, Science Teachers’ Association of Ontario, January, 2018, pp. 34.

YouTube Video:
A solar eclipse can cook your eyes: How to watch safely (4:55)
https://www.youtube.com/watch?v=tJMmkc2_WWo
A quick earth and space science safety summary:
1. Only view the sun using a pinhole camera or using appropriate solar
viewing glasses. Never look at the sun directly or through binoculars
or a telescope.

Specific Guidelines for a Safe Physics Lab:
Electricity
• Two main electrical hazards:
1. interference of body nervous system from small currents
and shock;
2. heating of tissue (burns) from large currents.
• Best practice is to avoid all shocks.
Source:

Electricity continued …
High Voltage Sources of Electricity
120 V AC (wall outlet) – not to be used directly by students
Electrostatic Generators – safe for students in good health as DC current well
below 5 mA
Capacitors – to be discharged by shorting their terminals before being worked with
Induction or Tesla Coils – safe for students as DC current below 5 mA
High Voltage Power Supplies – teacher use only as high currents are possible.
Low Voltage Sources of Electricity
Dry cell batteries – safest power source can be used by students
Rechargeable batteries – can be used by students
Low Voltage Power Supplies (up to 12 V) – can be used by students

Electricity continued …
General Rules
1. Keep water and wet hands away from all electrical cords, plugs and
sockets.
2. Watch for worn or loose insulation on conductors.
3. Use CSA or UL labelled equipment.
4. Pull with the plug not the cord when unplugging electrical devices.
5. Watch for cord tripping hazards.
6. Store batteries so that terminals cannot short circuit.

Radiation Hazards
Lasers
• Use class 1, 2 and 3R lasers only as the power output is 5 mW or less.
• Students may use only red lasers in the classroom.
• Teachers may use green or blue lasers for demonstration purposes only.
• Treat all lasers as if their beams are dangerous.
Stroboscopes and Signal Generators
• May cause seizures for epileptics.
• Try not to use and warn all people present if to be used.
Ultraviolet Radiation (UVR)
• All UVR (wavelengths under 315 nm) is hazardous.
• Blacklights with wavelengths longer than 315 nm are acceptable.
• Watch for equipment that may emit UVR and ensure students are shielded if
used for demonstration purposes.

Radiation Hazards continued …
Microwaves
• Teacher demonstration only with proper shielding of students
Radioactivity
• Low radioactivity sources may be used for half-life experiments, cloud change
demonstrations and Geiger counter measurements.
• Sealed disc sources purchased from approved suppliers do not required any
special storage spaces.
• Use of license-exempt quantities of sealed sources is recommended.
Gas Discharge Tubes and X-Rays
• Low voltage (5 kV) discharge tubes may be used since they will not create
hazardous x-ray emissions.

Physical Hazards
Exposed Belts
• All exposed belts and pulleys (such as from vacuum pumps) must be guarded
(protected from catching clothing and hands).
High Speed Rotation
• Loose hair and clothing must be kept away from rotating parts.
• Eye protection must be used when investigating centripetal force.
• Avoid all high speed rotations.
• Observers should not be in the plane of rotation.
• Observers should not come into contact with rotating parts.
Magnets
• High field permanent magnets or electromagnets may cause: pinching hazards,
magnetic strip hazards, pacemaker hazards, electric shock hazards (for
electromagnets)

Physical Hazards continued …
Falling Objects
• Do not allow hands or feet to be placed under suspended objects.
• Always wear closed toed shoes.
• Ensure landing areas are clear from obstructions.
Projectiles
• Students must keep clear of projectile path and landing areas
• Do not use sharp pointed objects as projectiles.
• Always wear eye protection during projectile experiments or demonstrations.
Wires Under Tension and Springs
• Eye protection must be worn when using wires under tension or springs.
• Stretched or compressed springs may be pinching or projectile hazards.
• Release the energy stored in a spring slowly in a controlled manner.

YouTube Video:
Safety, so hot right now. Safety. Physics Lab Safety with Science
Hutch and Friends (5:37)
https://www.youtube.com/watch?v=LAArlkWa-vw
Watch from 1:35 to 5:37 or if time tight then physics only from 3:50 to 5:03
A quick physics safety summary:
1. Always wear impact goggles to protect your eyes from poking hazards
and projectiles.
2. Always turn off the power to electrical circuits before making
adjustments to the circuit, always prevent battery short circuits, and
always unplug electrical equipment by grasping the plug not the cord.
3. Always be aware of pinching hazards and dropping hazards.

HOMEWORK
 Complete Safety Declaration for Friday
 Complete Mark Contract for Friday
 Lab Equipment WS
 Memorize the symbols and names for
 the first 20 elements
 silver, gold, copper, nickel, iron,

grade 10 Course Intro, WHMIS, Safety.ppt

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