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Beschreibung
Quiz von Madison Sanford, aktualisiert more than 1 year ago
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Erstellt von Madison Sanford
vor fast 3 Jahre
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Frage 1
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In the science lab how do you gain knowledge?
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reading books
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discussing theories
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doing things
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watching the teacher
Frage 2
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what must you do if you have an accident?
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don't tell anyone
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notify the teacher
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scream and run away
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clean it up yourself
Frage 3
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to be safe in the science classroom you must
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pay attention
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follow the rules
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use common sense
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all of these
Frage 4
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Rules in the lab are designed to protect your
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friendships
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privacy
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skin and eyes
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all of these
Frage 5
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Always use this size container when you are pouring chemicals:
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large
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small
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medium
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doesn't matter
Frage 6
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When you are reading the chemical bottles you must note the following information:
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name
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concentration
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hazard warnings
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all of these
Frage 7
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The proper method for mixing acid and water is to
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acid to water
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water to acid
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it doesn't matter
Frage 8
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What is the safest way to smell a chemical
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smell it directly by putting your nose over it
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inhale deeply to determine what it is
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waft the smell to your nose using your hand
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all of these
Frage 9
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When pouring chemicals:
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use a work tray
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keep your hand on the label area
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immediately stopper chemicals
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all of these
Frage 10
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Harmful volatile chemicals which release fumes should be stored in:
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on the lab table
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a fume hood
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in a closed area
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none of these
Frage 11
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When using chemicals
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recycle unused chemicals
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use clean glassware
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only pour out, never in
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all of these
Frage 12
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At the end of every lab activity you must first
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relax
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write up the lab
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clean equipment and hands
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remove your safety glasses
Frage 13
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Never heat the following using an open flame
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acids
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volatile chemicals
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water
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metals
Frage 14
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What controls the flow of gas on the Bunsen Burner?
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air inlets
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wing tip spreader
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rubber tubing
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valve
Frage 15
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when lighting a Bunsen Burner with a match or lighter
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light the match first and then turn on the gas
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turn on the gas before you light the match
Frage 16
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What controls the amount of oxygen flow into the Bunsen Burner
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air inlets
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wing tip spreader
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valve
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rubber tubing
Frage 17
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What colour would an ideal flame have
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transparent
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blue
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orange-red
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yellow
Frage 18
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If the flame sputters or goes out, you should first
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relight it immediately
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turn off the gas
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notify the teacher
Frage 19
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We check all glassware before heating it for cracks or stars to prevent it from
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leaking
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bursting or exploding
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glowing
Frage 20
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Why is it not safe to heat a sealed container?
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the cork could blow out
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the container could burst/explode
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it could burst into flames
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none of these
Frage 21
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Which method can be used to heat a test tube?
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in a water bath
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never heat a test tube
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moving it back and forth through a flame
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both a) and c)
Frage 22
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What two substances look the same whether they are hot or cold?
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metals and glassware
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liquids and chemicals
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metals and gases
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liquids and glassware
Frage 23
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The two types of thermometers used in a science classroom are:
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mercury and bromine
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alcohol and mercury
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alcohol and bromine
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alcohol and water
Frage 24
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which rule is true for thermometer use?
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shake it down to get a good reading
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you may clean up a broken thermometer
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keep it on a wire screen when not in use
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leave it on the edge of the table for quick use
Frage 25
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The most common causes of injury in a science classroom are
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burns
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cuts from glass
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inhalation of fumes
Frage 26
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you must never attempt to
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snap a glass tube in half
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insert one end into a hole of a rubber stopper
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seal one end by melting the glass
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all of the above
Frage 27
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Centrifuges separate
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solids from gases
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solids from liquids
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liquids from gases
Frage 28
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what can happen if a centrifuge is not evenly balanced?
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explodes
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short circuits
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vibrates violently
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spins faster
Frage 29
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which of the following must be worn in a science classroom?
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lab coat
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school uniform
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loose sleeves
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closed leather shoes
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both a) and d)
Frage 30
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what should you do with long hair?
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wear a cap
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tie it up
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nothing
Frage 31
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why is it important to remove rings, watches and contact lenses if you are going to work with chemicals?
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chemicals may become trapped against the skin
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they can become damaged
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they can react with the chemicals you are using
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all of the above
Frage 32
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How should you protect your eyes from chemicals and glass shards?
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blink often
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open the windows
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wear safety goggles
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be careful
Frage 33
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how should you protect your hands when pouring chemicals? Use:
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hot mitts
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safety goggles
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gloves
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tongs
Frage 34
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The first and most important rule is:
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put yourself first
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no fooling around in the science classroom
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read your procedure once the lab has started
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run to get your chemicals
Frage 35
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where should personal belongings be kept during a lab activity?
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in the hallway
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in your desk or cupboards
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on lab table
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in the aisles
Frage 36
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When measuring a substance in a burette or graduated cylinder, your eyes should be
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below the meniscus level
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the same level as the meniscus
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above the meniscus level
Frage 37
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Why is it important that you never bring in food, drinks or makeup into the science classroom?
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your skin, eyes or mouth could develop a rash or burn
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chemicals may become trapped against the skin
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some chemicals are poisonous or cancer causing
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all of these
Frage 38
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If a chemical gets in your eyes you must
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ignore it, your tears will remove it
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wash it out for 5 minutes
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wash it out for15 minutes
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spray a chemical to neutralize the reaction
Frage 39
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if a fire starts in a small container you should
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use a fire extinguisher
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cover it
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evacuate from the building
Frage 40
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If a person's clothing catches fire they should
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get the safety blanket
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run around to get help
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stop, drop and roll
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go to the eye wash fountain
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