Basics

Question 1

What does WHMIS stand for?

Answer 1

Workplace Hazardous Materials Information System

Question 2

Draw and explain the symbols (10) + give examples

Answer 2

Check notes!!!

Question 3

What does HHPS stand for?

Answer 3

Hazardous Household Products Symbols

Question 4

Draw and explain the symbols (4+3) + give examples

Answer 4

Check notes!

Question 5

Draw and explain all materials

Answer 5

Check notes!

Question 6

what are the three types of tongs

Answer 6

crucible, beaker, test-tube

Question 7

what heats intensely

Answer 7

pipestem triangle, crucible & cover

Question 8

what heats gently

Answer 8

wire gauze

Question 9

which clamps are used for what

Answer 9

utility clamp = test tubes
iron ring clamp = beaker

Question 10

what is erlenmeyer flask good for

Answer 10

shape is good for rubber stoppers, good for stirring, good for storing solution

Question 11

what is used to measure out liquids

Answer 11

graduated cylinder = accurate
buret = highly accurate

Question 12

What is the scientific method?

Answer 12

1. Question/problem
2. Research
3. Hypothesis
4. Conduct and experiment
5. Analyze your data
6. Conclusion (hypothesis is correct/partially correct/wrong)
7. Report your results

Question 13

What is a qualitative observation?

Answer 13

Something you observe that has a quality to it

Question 14

What is a quantitative observation?

Answer 14

Something you observe that has a quantity

Question 15

What is a control?

Answer 15

A part of the experiment that is not being tested and is used for comparison.

Question 16

What is a variable?

Answer 16

Any part of an experiment that can change.

Question 17

Independent variable & dependent variable & control variable

Answer 17

IV: The part of the experiment that is changed by the scientists or person performing the experiment

DV: The part of the experiment that is affected by the independent variable

CV: A variable that we know could affect the results, so we deliberately “control” it

Question 18

The hypothesis

Answer 18

If (the independent variable is increased/decreased)

Then (the dependent variable will…)

Because (based on your educated theory)

Question 19

Test vs Trial

Answer 19

Test: The IV values (should have at least 5, 7 for bio)

Trial: The # of times you repeat a test (should be 3, 5 for bio)

Question 20

What is an SDS?

Answer 20

A safety data sheet

Question 21

What should you include when writing materials for a lab

Answer 21

Equipment and chemicals (the total amount)

Question 22

What are the key points of a good method/procedure

Answer 22

1. no pronouns
2. numbered list
3. small steps
4. 5 tests, 3 trials
5. disposal instruction caustic, acidic, organic
   pH > 7 pH<7

Question 23

What should a sample calculation have

Answer 23

1. specific title
2. the equation without actual values
3. the name of the test being sampled
4. calculation
5. units