Practical Exam Review

Question 1

what does WHMIS stand for?

Answer 1

Workplace Hazardous Materials Information System

Question 2

what does HHPS stand for?

Answer 2

Hazardous Household Products Symbols

Question 3

what are the 10 WHMIS symbols?

Answer 3

• Compressed gas (bottle)
• Flammable material (flame)
• Oxidizing (circle with a flame on top)
• Explosive Hazard (explosion)
• Harmful or Fatal (skull and crossbones)
• Biohazardous/Infections (circle shaped)
• Corrosive (pouring material on burning hand)
• Health Hazard (human with ‘explosion’ in chest)
• Harmful (exclamation mark)
• Harmful to the environment (dead tree and fish)

Question 4

a triangular shaped HHPS symbol means what?

Answer 4

the container is dangerous

Question 5

an octagonal shaped HHPS symbol means what?

Answer 5

the product inside the container is dangerous

Question 6

what are the HHPS symbols?

Answer 6

• explosive (triagnle, explosion)
• corrosive (octagonal, hand bones)
• poisonous (octagonal, skull and crossbones)
• flammable (octagonal, flame)

Question 7

what are the WHMIS signal words?

Answer 7

• danger (for severe hazard)

- warning (for less severe hazard)

Question 8

what is used to hold a hot beaker?

Answer 8

beaker tongs

Question 9

what is used to measure the mass of a substance?

Answer 9

electronic balance

Question 10

what is used to view small specimen?

Answer 10

microscope

Question 11

what is used to measure temperature?

Answer 11

thermometer

Question 12

what is used to measure volume?

Answer 12

graduated cylinder

Question 13

what is used to heat substances?

Answer 13

hot plate

Question 14

what is used to obtain a small amount of a liquid?

Answer 14

eye dropper

Question 15

what is used to hold a test tube when it’s hot?

Answer 15

test tube holder

Question 16

what is used to conduct tests on small amounts of a substance?

Answer 16

spot plate

Question 17

what is used to hold a funnel, beaker, Erlenmeyer flask, etc.?

Answer 17

retort stand

Question 18

what is used to grind a solid into smaller pieces?

Answer 18

mortar and pestle

Question 19

what is used to hold small amounts of a liquid?

Answer 19

test tube

Question 20

what are the different types of elements?

Answer 20

• atomic element

- molecular element

Question 21

what are the different types of compounds?

Answer 21

• molecular compound

- ionic compound

Question 22

what is an atomic element?

Answer 22

only one atom makes up substance (ex. Au, Ag, Na)

Question 23

what is a molecular element?

Answer 23

only one type of atom make up the substance (ex. O2, H2, N2)

Question 24

what is a molecular compound?

Answer 24

2 or more non-metallic elements make up the substance (ex. H2O, CH4)

Question 25

what is an ionic compound?

Answer 25

a metallic atom and one or more non-metallic atoms are chemically combined (ex. NaCl, CaCO3)

Question 26

what is a physical property?

Answer 26

a property that can be determined using our five senses

Question 27

what is a chemical property?

Answer 27

involves the formation of one or more new substances

Question 28

how do you know if it is a chemical property?

Answer 28

- Formation of solid - Formation of gas - Formation of energy - Drastic colour change - irreversible reaction

Question 29

how can you use the electrostatic series to determine the charge on an object after friction?

Answer 29

the object higher on the list loses electrons and becomes positively charged, while the lower substance gains electrons and becomes negatively charged higher = positive charge lower = negative charge

Question 30

what are the three laws of electric charges?

Answer 30

- like charges repel - opposite charges attract - neutral objects neither repel nor attract

Question 31

what's the difference between a parallel and series circuit?

Answer 31

parallel has multiple paths for electrons to flow, series only has one path

Question 32

how do you measure current?

Answer 32

black wire in com, red wire in A, connect in series

Question 33

how do you measure voltage?

Answer 33

black wire in com, red wire in Y, connect in parallel

Question 34

what is a predator?

Answer 34

an organism that kills and eats another organism

Question 35

what is prey?

Answer 35

an organism that is killed and eaten by the predator

Question 36

define the term biotic factor

Answer 36

living components, (ex. plants, animals)

Question 37

define the term abiotic factor

Answer 37

non-living components, (ex. temperature, wind)

Question 38

list some biotic factors that can impact the growth of plants

Answer 38

- overcrowding of plants | -

Question 39

list some abiotic factors that can impact the growth of plants

Answer 39

- not enough water - not enough sunlight - natural or caused disaster

Question 40

what is the difference between rotation and revolution?

Answer 40

rotation: earth makes one rotation from the west to east a day revolution: earth revolves around the sun one time every 365.25 days

Question 41

what is the difference between solar and lunar eclipse?

Answer 41

solar: occurs when the moon is aligned with the earn and sun and blocks the sun lunar: occurs when the earth is positioned between the sun and moon casting a shadow on the mood

Question 42

how can you differentiate between summer solstice and winter solstice in a model of the solar system in the southern and northern hemisphere?

Answer 42

winter: northern hemisphere is tilted away from the sun as much as possible (december 21st) summer: northern hemisphere is tilted toward the sun as much as possible (june 21st)

Question 43

How do you tell if something is transparent?

Answer 43

You can see right through it (its clear)

Question 44

How do you tell if something is translucent?

Answer 44

You can partially see through it, its not completely see through (mouth wash)

Question 45

How do you tell if something is opaque?

Answer 45

You cannot see through it at all (Ketchup)

Question 46

How do you find out if something is denser than another object?

Answer 46

Put the object in water and see if it floats, or see what sinks faster. (The object that sinks faster is denser)

Question 47

How do you find out if something is more viscous than another object?

Answer 47

Let the two substances drip, the one that drips slower is more viscous

Question 48

How do you find out which is more malleable?

Answer 48

Try bending it

Question 49

Which one has more lustre?

Answer 49

How shiny is it?

Question 50

Which one is more water-soluble?

Answer 50

Mix it with water?

Question 51

What is temporary induction?

Answer 51

When a charged object is brought close to a neutral object, the electrons move to one side temporarily (Water bending)

Question 52

What us permanent induction?

Answer 52

When a charged object is brought close to a neutral object, the electrons move to one side while you are grounding the neutral object. When you remove the charged object and the ground it will be permanently charged