Lab Equipment

Question 1

Erlenmeyer flask

Answer 1

Used to hold/mix liquids, wider at bottom
for even heating
• can be stoppered to prevent evaporation
– Never used to measure exact volumes

Question 2

Bunsen Burner

Answer 2

A Bunsen burner is a device used in
scientific laboratories for heating,
sterilization, and many other uses.

Question 3

Braided hose

Answer 3

Connects bunsen burner to gas

Question 4

Flint Striker

Answer 4

Creates spark to safely light bunsen burner

Question 5

Graduated cylinder

Answer 5

measures volumes in a quantitative manner.
• The cylinder is far more exact than a beaker or Erlenmeyer flask
– NEVER measure volumes with anything else except a graduated cylinder

Question 6

Test tube

Answer 6

holds and test various reactions on a small scale
• They are designed to allow easy heating
of samples, to be held in a flame, at a
45o angle
– They are made of special heat-resistant
glass called Pyrex. Only Pyrex glass can be used in flames because plain glass will crack.

Question 7

Disposable pipette

Answer 7

Both dispense a small volume of liquid.
– Volumes dispensed is never exact
– Pipettes are usually disposed of after use

Question 8

Titration Burette

Answer 8

Burettes are used in a volumetric analysis.
• Burettes dispense an EXACT volume of liquid often in an acid/base procedure called a “titration”
• titrations are used to calculate the acidity of a solution

Question 9

Burette clamp

Answer 9

holds a burette during titration
can hold one or two burettes

Question 10

Beaker

Answer 10

A beaker is a cylindrical cup with a notch on the top to allow the pouring of liquids.
– Made of Pyrex, come in many sizes
• Used for mixing & heating of chemicals
– NEVER to measure volumes.
– They are relatively inaccurate
– Offer approximate volumes only

Question 11

Test Tube Brush or Beaker Brush

Answer 11

Used to clean test tubes &
beakers
– The brush fits neatly inside them,
allows scrubbing using a twisting
motion

Question 12

Test tube holder

Answer 12

To hold and transport test tubes
– Place about 2/3 up the test tube toward the mouth

Question 13

Crucible

Answer 13

– A crucible is a porcelain cup-shaped piece of laboratory equipment used when heating small crystal compounds to very high temperatures (to dehydrate them).

Question 14

Crucible tongs

Answer 14

– Initially designed to safely holds a crucible but it is the GO TO to pick up other small lab objects which may require heating or picking up during a lab.

Question 15

Mortar and pestle

Answer 15

Grinds crystalline solids into
fine powder

Question 16

Iron Ring

Answer 16

Gets clamped to a ring stand and
serves as support to heat lab
apparatus upon
– Use 2 rings to protect against
spills with a beaker when heating

Question 17

Ring Stand

Answer 17

Support for iron ring and other lab
apparatus
– Many things clamp onto a ring
stand.

Question 18

Utility clamp

Answer 18

Clamp it to a ring stand
to hold test tubes and
flasks (& other items)
during experiments.

Question 19

wire mesh (gauze)

Answer 19

Sits upon the ring, under a beaker
– It evenly distributes heat from a Bunsen burner so it is not concentrated in one spot when heating burning your samples

Question 20

Clay triangle

Answer 20

Lays up the iron ring, supports a crucible while heating
Can also be used during funnel filtration to support the funnel

Question 21

Evaporating dish

Answer 21

A porcelain dish used to heat solutions ie. Salt water to recover salt
• Only used evaporate relatively SMALL VOLUMES of solutions

Question 22

Watch glass

Answer 22

small concave circular piece of glass.
• Used on top of an evaporating dish to “watch” your solution evaporate and will also to prevent splattering

Question 23

Stir rods

Answer 23

Stir rods are long cylinders made of glass.
– Used to carefully & gently mix solutions in a circular motion

Question 24

Thermometer

Answer 24

Used to measure temperature
– We only use the Celsius scale
- not used to stir

Question 25

Thermometer clamp

Answer 25

Clamps a thermometer to a ring stand
• The thermometer should NOT touch the bottom of the beaker when heating, should be in the middle of the solution

Question 26

Hot hands

Answer 26

Used to safely hold or move “hot”
beakers and glassware
• Safer to be worn on BOTH hands

Question 27

Electronic balance

Answer 27

Determines the mass of substances in grams
– They are delicate. Never push on one
-Always use with a weigh boat or beaker when measuring out substances

Question 28

Weigh boat

Answer 28

a weigh boat is an object used to protect your balance from any dry chemicals you want to mass

Question 29

Scoopula

Answer 29

The scoopula is used to transfer chemicals.
• Wash and rinse the scoopula before using and between uses so we don’t CONTAMINATE

Question 30

Forceps

Answer 30

FORCEPS are used to pick up
small items in the laboratory

Question 31

Spatula

Answer 31

Laboratory spatulas are utensils that help with mixing, scraping, and other tasks related to transferring materials and samples from one place to another
– they are used for samples SMALLER than you use a scoopula for

Question 32

Spot plate and well plate

Answer 32

A SPOT PLATE has a number of small “wells”
• Well plates have larger wells.
– Chemicals are placed into the wells, and
reactions are observed

Question 33

Volumetric flask

Answer 33

is a piece of laboratory glassware, a type laboratory flask, calibrated with a mark to contain a precise volume.
• usually 250mL, 500mL, 1.0L
• Can be heated (pyrex)

Question 34

Funnel

Answer 34

a tube or pipe that is wide at the top and narrow at the bottom
– used for guiding liquid or powder into a small opening

Question 35

Filter paper

Answer 35

a semi- permeable paper barrier placed in a
funnel to separate larger solid particles from liquids or solutions

Question 36

Hot plate

Answer 36

frequently used in the
laboratory to heat sample and solutions
samples in the chemistry lab

Question 37

test tube rack

Answer 37

a piece of laboratory equipment used to hold multiple test tubes upright at the same time.

Question 38

Goggles

Answer 38

protect ya eyeballs