Safety Symbols See page 552 (c) McGraw Hill Ryerson 2007

Safety Symbols See page 552 (c) McGraw Hill Ryerson 2007

WHMIS Symbols (c) McGraw Hill Ryerson 2007

Scientific Inquiry Observations Hypothesis Experiment Conclusions ___________ vs ____________ Hypothesis _____… _____… Experiment One variable at a time _________ and ___________ variables Conclusions _______________ Theory Many experiments support the hypothesis See page 553 (c) McGraw Hill Ryerson 2007

Technological Problem Solving Identify the problem Establish ________ for the solution Plan and Construct ___________ success See page 557 (c) McGraw Hill Ryerson 2007

Societal Decision Making Identify an ____________ Gather information Identify ______________ Make a decision ____________ the decision See page 559 (c) McGraw Hill Ryerson 2007

“In the house, then up the stairs” (x,y) _______________________ Graphing “In the house, then up the stairs” (x,y) (_______________ , ______________) _______________________ _____________ Practice on Computers… See page 562 (c) McGraw Hill Ryerson 2007

Make it _______________ to show details ___________ details Scientific Drawings Make it _______________ to show details ___________ details Drawn ___________ (show scale) See page 568 (c) McGraw Hill Ryerson 2007

If there are 85,000 cells, you don’t want to count each one… Estimating If there are 85,000 cells, you don’t want to count each one… Weeds per hectare Crowd estimation See page 570 (c) McGraw Hill Ryerson 2007

Measuring Meniscus ______________ __________________ See page 572 (c) McGraw Hill Ryerson 2007

Reading a Scale (c) McGraw Hill Ryerson 2007

Compound Light Microscope Know the parts… Carry it correctly See page 577 (c) McGraw Hill Ryerson 2007

Microscope Field of View Always start on ______ power Always make sure the stage is ___________ than the objective lens when a slide is in place Place a clear mm ruler on stage and focus under low power, measure diameter of field of view. Move to medium power and repeat. Make a wet mount of a single hair and estimate it’s diameter See page 578 (c) McGraw Hill Ryerson 2007

_________-based system of measurements Units with prefixes Metric System _________-based system of measurements Units with prefixes See page 586 (c) McGraw Hill Ryerson 2007

SI Units (Système International) A bit different than “Metric” units Intended to ____________ See page 587 (c) McGraw Hill Ryerson 2007

Scientific Notation See page 588 (c) McGraw Hill Ryerson 2007

The Factor-Label Method Start with the number having ____________ units Multiply by factors that _________ ______ properly till you get to the desired unit ie: How many seconds are there in 1.25 days? (c) McGraw Hill Ryerson 2007

How many cm are there in 8.6km ? Convert 65km/hr to m/s Metric Conversions How many cm are there in 8.6km ? Convert 65km/hr to m/s See page 587 (c) McGraw Hill Ryerson 2007

Significant Figures (sig figs) ____________ zeros never count ______________ zeros always count ____________ zeros only count if a decimal place is present See page 590 (c) McGraw Hill Ryerson 2007

Adding and Subtracting and sig figs Your answer can only have one ____________ digit ie: 2.3mL + 6.47mL + 13.689mL = 22.459mL = 22.5mL But, they were all measured in different pieces of glassware… the “3” in the first measurement is uncertain, so the 4 in the answer is also uncertain, so the answer must be rounded to one decimal place. See page 590 (c) McGraw Hill Ryerson 2007

Multiplying and Dividing and sig figs   See page 590 (c) McGraw Hill Ryerson 2007

Combined Operations and sig figs   See page 590 (c) McGraw Hill Ryerson 2007