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Science G9 First Unit > Test 1 (Lab Safety, WHMIS, Equipment, Sci Method, Observations > Flashcards

Test 1 (Lab Safety, WHMIS, Equipment, Sci Method, Observations Flashcards

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1
Q

What is Scientific Method

A

Question, Hypothesis, planning/materials, investigate/experiment, analyse, conclusion

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2
Q

What is a Law

A

A law isn’t used to explain but instead used for predictions, descriptions, and summaries

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3
Q

What are Theories

A

They are used to explain why something happens the way it does

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4
Q

What are Models

A

They are used to represent a system of ideas, events or processes. E.g descriptive, representational, mathematical and computational

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5
Q

What Is a good scientific question

A

Simple, direct, testable, and compares 2 things

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6
Q

What is the format of a good scientific question

A

What is the effect if (IV) on (DV)
IV: keto diet, gravity / DV: muscle mass, objects near earth

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7
Q

What are the 3 variables

A

Independent variable, dependent variable, and controlled variable

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8
Q

What is an independent variable

A

A factor you change

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9
Q

What is a dependent variable

A

A factor that depends on the IV

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10
Q

What is a controller variable

A

Factors that may affect the outcome so they need to stay unchanged

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11
Q

What are the 2 observations

A

Qualitative (gathered through senses, words)
And
Quantitative (measurements, numbers)

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12
Q

What’s an inference

A

An educated guess make with the little info available

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13
Q

Use of an electronic balance

A

Used to measure mass

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14
Q

Use of a bunsen burner

A

Used as a heat source in the lab

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15
Q

Use of a test tube

A

Used to hold/mix/heat material in a small quantity especially for an experiment

Their round bottom and straight sides minimize mass loss when pouring, make them easier to clean, and allow convenient monitoring of the contents.

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16
Q

Use of a rubber stopper

A

Used to close a tube/flask/the glass things

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17
Q

Full name of the flask?

A

Erlenmeyer Flask

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18
Q

Why is the erlenmeyer flask conical with a narrow top

A

If gases come up you will lose less and it’s easier to pop on a rubber stopper

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19
Q

Use of a petri dish

A

Used to culture/grow bacteria

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20
Q

Use of a beaker

A

Used to hold material/tests in larger amounts

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21
Q

What’s the stirring rod made of and why

A

Glass because it doesn’t heat as easily and u can see residue, why a lot of lab equipment is glass.

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22
Q

Use of a mortar and pestle

A

Uses to grind things into grains

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23
Q

Use of a scoopula

A

Used to scoop objects but also to break apart larger ones so you can scoop

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24
Q

Use of tongs

A

To hold a experiment holder without making direct contact (safety)

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25
Q

Use of a flint lighter

A

To light things quickly

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26
Q

Use of a funnel

A

Easier to pour things into narrow containers

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27
Q

Use of a test tube rack

A

Used to hold test tubes when not in use or otherwise

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28
Q

Use of the pipette

A

To transport a measured volume of liquid

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29
Q

Use of a graduated cylinder

A

Used to accurately measure the volume of a liquid

30
Q

Use of a thermometer

A

To measure temperature

31
Q

Use of a spot plate

A

designed to facilitate the testing of multiple samples

32
Q

Use of safety goggles

A

To protect your eyes

33
Q

Use of a retort stand

A

used to hold equipment in place, so that they do not fall down or come apart. So you can perform experiments without contact

34
Q

Use of forceps

A

Used for grasping and holding objects

35
Q

Lab safety 1

A

Always wear safety goggles whenever you are working with chemicals or other substances

36
Q

Lab safety 2

A

Never reach across a flame

37
Q

Lab safety 3

A

Immediately notify your teacher if any chemical gets on your skin or clothing to find out what to do to
clean it off.

38
Q

Lab safety 4

A

Never look directly into a test tube when mixing or heating chemicals

39
Q

Lab safety 5

A

Always point a test tube away from you and others when heating it over a flame or other heat source.

40
Q

Lab safety 6

A

Never smell a chemical directly from the container. Wave your hand over the opening of the container and “waft” the fumes towards your nose.

41
Q

Lab safety 7

A

Never taste a chemical unless you are instructed by your teacher to do so.

42
Q

Lab safety 8

A

AIways clean up your work area and equipment after an experiment is completed. Equipment
must be returned to its proper place. (U can lose marks if you don’t)

43
Q

Lab safety 9

A

Read and follow all directions exactly as they are written. If in doubt, ask your teacher for help!

44
Q

Lab safety 10

A

Never mix chemicals (or perform tests) without your teacher’s permission.

45
Q

Lab safety 11

A

Never run (or push someone else) in the lab.

46
Q

Lab safety 12

A

Keep lids on bottles and containers when not in use.

47
Q

Lab safety 13

A

Never use broken or chipped glassware. Inform your teacher.

48
Q

Lab safety 14

A

Keep your work area clean and keep all materials (clothing, hair, papers, etc.) away from a flame or
heat source.

49
Q

Lab safety 15

A

Immediately notify your teacher if you get cut or have another injury when performing an
experiment. (Not a paper cut, but I’m sure you can ask for a bandaid..?)

50
Q

Lab safety 16

A

Always wash your hands before and after each experiment

51
Q

How many lab safety rules are there

A

16

52
Q

What does WHMIS stand for

A

Workplace Hazardous Materials Information System

53
Q

How many WHMIS symbols are there

A

10

54
Q

Which WHMIS symbol does the following description match?: “Long-term exposure may result in serious or prolonged health effects or death”

A

Serious health hazard (cracks on a person’s chest)

55
Q

Which WHMIS symbol does the following description match?: “Catches fire when it comes into contact with oxygen and a heat source”

A

Inflammable (a normal flame)

56
Q

Which WHMIS symbol does the following description match?: “Could burn the skin and damage the eyes. Avoid breathing in vapours”

A

Corrosive (2 tests tubes being poured over a hand and metal pole that seem to burn on contact)

57
Q

Which WHMIS symbol does the following description match?: “Could cause damage to animal and plant life if released into water systems”

A

Harmful to the environment (dead fish and tree)

58
Q

Which WHMIS symbol does the following description match?: “May cause short-term health effects such as irritation, drowsiness or
dizziness.”

A

Moderate health hazard (exclamation mark)

59
Q

Which WHMIS symbol does the following description match?: “Contains compressed, liquified or dissolved gas. May explode if
heated.”

A

Gas under pressure/compressed gas (bottle laying on its side)

60
Q

Which WHMIS symbol does the following description match?: “Infectious or biological toxin causing serious disease or death”

A

Biohazard (circle outline, the symbol you’d see on an acid bin)

61
Q

Which WHMIS symbol does the following description match?: “May cause or intensify a fire by increasing the concentration of oxygen in the air.”

A

Oxidizing (same as inflammable, flame with an O/a circle in the center)

62
Q

Which WHMIS symbol does the following description match?: “Short-term exposure, such as contact with skin, swallowing or inhalation, could cause illness or death.”

A

Acute toxicity / death (skull and bones)

63
Q

Which WHMIS symbol does the following description match?: “May explode when dry or exposed to heat”

A

Explosive (a bottle shattering)

64
Q

What’s the most common WHMIS outline shape

A

A diamond

65
Q

What is the WHMIS hazard with an odd outline and what shape

A

Biohazard, circle

66
Q

How are hypotheses verified

A

Trial and error in scientific method

67
Q

Name 5 words for Qualitative Observations

A

Colour, odour, taste, luster, texture

68
Q

T or F: does an observation have to be factual with clear evidence (exception: quantitative)

A

True

69
Q

If a observation states “the dino’s teeth are 5 cm long” but there are no rulers seen to measure that, is it safe to go with quantitative?

A

Yes, and it’s recommended. By logic inferences should also work but in this class, ANY numbers seen go straight to quantitative

70
Q

Are you doing to rock this exam?

A

Yes ma’am!!! 🫡 🫡 🫡 (can u see that?? It’s a salute emoji.

Science G9 First Unit (1 decks)

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