BrainstormWhat is chemistry?

What will you see this unit?What will you hear

discussed?What will you do this unit?

TOPIC 1.0 LAB SAFETY AND

PROPERTIES

Outcomes 2.1k- What are caustic materials? What

are some reactions that should be avoided?

2.4s- Demonstrate knowledge of WHMIS standards, by using proper techniques for handling and disposing of laboratory materials

AF. Safety- Show concern for safety in planning, carrying out and reviewing activities

1.1 Identification of Safety Issues 1) Independently create a list of the

safety hazards that appear on the next slide.

2) When asked, turn to your partner and share your ideas

3) Share as a whole class.

Lab Safety – Mind Map Create a mind map by adding lab safety

ideas to the following topics

Lab Safety

Clothing

BehaviorsProcedures

Prevention

Lab Rules Using the mind maps you created, come

up with 5 rules for working safely in the lab

Share as a class

Lab Safety Video http://youtu.be/xJG0ir9nDtc

Safety Scenarios With your assigned group, choose one

scenario Create a skit to explain your scenario

and the right and wrong way to handle the situation

Be ready to share!

Safety Rules 1. Read & know procedure. 2. Wash hands after lab. 3. No food or drink in the lab – no tasting! 4. Wear safety googles always. 5. Waft substances to smell them. 6. Tie back long hair. 7. No flip-flops or open shoes 8. Place test tubes in a test tube rack when

transporting and pouring in liquid.

Safety Rules 9. Wipe up spills. 10. Wipe off counter after lab. 11. Place chipped/broken glass in broken

glass pail. 12. Label ALL beakers/test tubes. 13. Report all accidents/spills. 14. Stay at your lab bench with your group. 15. Never leave lab bench unattended.

PPE Personal Protective Equipment

Lab RolesGROUP MANAGER

READS PROCEDURE TO GROUP

KEEPS GROUP MEMBERS ON TASK/TIME

RECORDS DATA IN TABLES SUMMARIZES RESULTS TO

CLASS CLEANS UP CLASS

MATERIALS

GOPHER GATHERS NECESSARY

GLASSWARE CONDUCTS

EXPERIMENT CLEANS UP ALL

GLASSWARE

TECHNICIAN MEASURES NECESSARY CHEMICALS COMMUNICATES RESULTS TO GROUP MANAGER CONDUCTS EXPERIMENT ASSISTS IN CLEAN-UP (COUNTERS, PUTS AWAY)

These symbols are on household products:

Shapes:

Household Symbols

Caution

Warning

Danger

Household Symbols

Household Symbols-examples

Household Symbols

WHMIS Symbols Workplace Hazardous Materials

Information System Differs from household symbols –

WHMIS is worldwide! MSDS- Material Safety Data Sheets

Information about each chemical usedEx. Flammability, volatility, mp, bp

WH

MIS

sy

mbo

ls

Where would you see each of

these symbols?

Special Note: Caustic – ability to burn or corrode

tissue ; refers to strong bases NaOH

Corrosive – ability to corrode; mainly refers to acids HCl

Corrode – means to “gnaw at” (Latin)

Reactions to AVOID Bleach X ammonia = Chlorine gas (BAD)

Used as a chemical warfare agent in WWII – corrosive especially when inhaled

+X

Assignment Pg. 96 qs. 3, 4, 5, 6, 7

Review as a class when finished

1.2 Classifying Matter 1.2k -How can we classify materials

based on properties? 1.2k - How can we classify materials

based on their composition?

Try It – On a spare piece of paperHow would you group/classify the following items? *Make sure to jot down your justification for your groups.*

1.2 Classifying Matter Matter – any substance that occupies

space and has massEx. Air, Water

Example of non-matter is:Skills Ideas

Beliefs Energy

1.2 Classifying MatterParticle Model of Matter (review) Matter is made of particles Particles attract each other Particles are always moving Particles move faster with higher

temperatures Each pure substance has different

particles than another substance

1.2 Classifying MatterA. States of Matter

Solid Liquid Gas

Melting Evaporation

Freezing Condensation

Deposition

Sublimation

1.2 Classifying Matter Draw the particles within the beaker to

demonstrate the particle model of matter and states of matter

Solid Liquid Gas

1.2 Classifying MatterB. Composition Matter

Mixtures

Mechanical mixtures

SolutionsSuspensions

Colloids

Pure Substances

Compounds

Elements

Made of 1 kind of matter

One kind of atom Two or more atoms/elem

ents in a fixed

proportion

Combo of pure

substances

Looks like one

substance

Particles are suspended & hard to separateParticles suspended but can be separatedDifferent parts are

visible

1.2 Classifying MatterExamples Matter

Mixtures

Mechanical mixtures

SolutionsSuspensions

Colloids

Pure Substances

Compounds

Elements Oxygen O2

H20Vinegar

Grape jelly

Italian salad dressing

Choc chip cookie

1.2 Classifying MatterHeterogeneous mixture Homogeneous

mixtureAppear as two or more

partsAppear as one

Mechanical mixture, suspension, colloid

Solutions

1.2 Classifying Matter Solutions can be in different states –

don’t let this fool you!Type of Solution

Example

Solid in liquid Iced Tea – sugar + waterLiquid in liquid Vinegar – acetic acid + waterGas in liquid Pop – carbon dioxide + waterGas in gas Air – Oxygen + nitrogenSolid in solid Brass – copper + zinc

1.2 Classifying MatterC. Properties of Matter Matter can be identified and classified

based on physical and chemical properties

Physical property

Description

Lustre, color, odor, texture, Melting point oC solid liquidBoiling point oC liquid solid

Hardness Moh’s scale; ability to resist being scratched(Diamond is 10 – hardest)

Malleability Ability to be pounded or rolled into sheets ex. aluminum

Ductility Ability to be stretched into long wire ex. copperCrystal shape Salt = cube silicon = diamond shape

Solubility Ability to be dissolved ex. Oil is not soluble in waterDensity Oil is less dense than water

Conductivity Electrical or heatViscosity Rate at which a liquid flows Ex. Molasses is viscous

Chemical Properties

Reaction with acids

Reaction with water

Reaction with air

Ability to burn

Reaction to heat

Video: Chemical vs. Physical Properties

LAB: Identifying Mystery Substance Turn to pg. 100-101 Pre-lab:

TitleQuestionOutcome – look on outcome sheet and write

out the outcome the lab is building onRead through procedure – be ready to answer

questions before you are able to enter the labSafety – list one safety concern of lab and PPE

suggested

LAB: Identifying Mystery Substance After the Lab:

Analysis: Answer qs. 20, 21, 23 Make sure these are in complete

sentences and you are justifying your answers.

Assignment Pg. 104

Questions: 3. 4. 6. 7. 8. 9. 10

1.3 Changes in MatterOutcomes 1.3k- What evidence shows that

properties of a material are changed? 1.3k - How do you know if a new

substance has been made?

Try IT: Turn to pg. 105 Skill Practice

1.3 Changes in MatterPhysical Change Chemical ChangeComposition stays the same

Formation of a new substance with new physical properties

Evidence: -State changes -Dissolves

Evidence: -change in color -change in odor -formation of solid or gas -release or absorption of energy (cool or

hot)Ex. Ice cream melting

Ex. Propane burning (combustion)

Practice: Label each of the following as either a Physical (P) or Chemical ( C) change

Substance P or CIce cubes melting Burning a candleGetting a haircutGlass of water sweatingAlka seltzer tablets fizzingDry ice smoking at a concertBaking muffins

Return to pg. 105 and check your answers to Skill Practice

LAB: Investigating Physical and Chemical Changes Read through pgs. 106-107 Pre-lab:

TitleQuestionObjective – check outcome sheetEvidence Table** changes: Omit: Changes during and after – make into

one column called “Evidence”

LAB: Investigating Physical and Chemical Changes After: Write in evidence table whether physical

or chemical In ANALYSIS, provide reasoning for

each reaction

Assignment Pg. 109 qs. 2, 4