Lab Glassware

Question 1

used for heating and sterilization, commonly
used for constriction of reagent bottles

Answer 1

High Thermal Resistant/Borosilicate Glass

Question 2

high resistance to
alkali

Answer 2

Boron-free/Soft Glass/ high alkali resistant glass

Question 3

special alumina-silicate glass that has
been strengthened chemically than thermally

Answer 3

Corex/high silica glass

Question 4

poor resistance to high
temperature; used to make disposable
glassware

Answer 4

Flint glass/soda lime glass

Question 5

used for light sensitive
reagents

Answer 5

Low actinic glass

Question 6

Are frequently used
for preparation of standard solutions

Answer 6

Volumetric flask

Question 7

Wide straight sided cylindrical
vessels that are available in many sizes;
used generally for mixing and for
reagent preparation

Answer 7

Beaker

Question 8

Are often used for
preparing reagents and titration
purposes

Answer 8

Erlenmeyer flask

Question 9

Test tubes comes in
different sizes depending on their
intended use; chemical reaction
medium

Answer 9

Test tube

Question 10

A long and straight
sided cylindrical piece of glassware with
calibration

Answer 10

Graduated cylinder

Question 11

Long cylindrical graduated
pipettes with stopcock (glass or Rubber);
used for titration

Answer 11

Biuret

Question 12

delivers the exact amount it
holds into a container

Answer 12

Calibration mark To deliver

Question 13

holds the particular volume
but does not dispense the exact volume

Answer 13

Calibration mark To contain

Question 14

etched rings on top of the pipette;
exact volume is obtained when the last drop
is blown out

Answer 14

Blowout pipette

Question 15

absence of etched ring; liquid
is allowed to drain by gravity

Answer 15

Self- draining pipette

Question 16

Type of Transfer Pipette

Answer 16

Volumetric pipette
Pasteur pipette
Automatic pipette

Question 17

for
nonviscous fluid; self draining

Answer 17

Volumetric pipette

Question 18

transfers fluid
w/o consideration of a specific
volume

Answer 18

Pasteur pipette

Question 19

Types of graduated pipette

Answer 19

Serologic pipette
Mohr pipette

Question 20

w/
graduation to the tip; blowout

Answer 20

Serologic pipette

Question 21

w/o graduation
to the tip

Answer 21

Mohr pipette

Question 22

An instrument that uses centrifugal
force to separate solid matter from a
liquid suspension

Answer 22

Centrifuge

Question 23

Handling Solutions

Answer 23

1. When pouring contents from a
   reagent bottle into an open-mouth
   container such as a beaker, use a
   stirring rod.
2. Remove the glass stopper from
   reagent bottles by pulling it with the
   use of index and middle fingers,
   palm facing upward

Question 24

Using the Laboratory Pipette: If a _________ portion of the liquid is to be
transferred to another container, use a
pipette or a medicine dropper

Answer 24

small portion

Question 25

Using the Laboratory Pipette: Let the pipette be filled by means of_________ action

Answer 25

capillary action

Question 26

Using the Laboratory Pipette: To hold the liquid in, place the ______ finger at the open end of the pipette

Answer 26

index finger

Question 27

Using the Laboratory Pipette: If exact amounts of solutions are needed, use an _________.

Answer 27

aspirator

Question 28

Heating solutions in a Test tube:

Answer 28

Fill use make and place

Question 29

Heating solutions in a Test tube: Fill the test tube with ________ of liquid to be heated

Answer 29

half full

Question 30

Heating solutions in a Test tube: Use a test ______ holder to hold the test tube

Answer 30

tube holder

Question 31

Heating solutions in a Test tube: Make sure the test tube is positioned ______ degrees angle when heating it

Answer 31

45 degrees

Question 32

Heating solutions in a Test tube: Place it over the flame passing it back and forth so that the flame strike the tube just below at the liquid level but never at the __________ of the tube

Answer 32

bottom tube

Question 33

What not to do Heating solutions in a Test tube

Answer 33

- Never point the open end of the tube to anyone while heating the solution in it - Never look directly inside the tube that is being heated - Never smell the solution directly from the test tube, wave your hand towards you to identify the smell

Question 34

Handling Solids

Answer 34

Spoon Put Donot place Donot return

Question 35

Handling Solids: To get solids from a reagent bottle, spoon it with a clean and dry ________ (a dirty spatula will contaminate the portion being taken and all the reagents inside the bottle)

Answer 35

clean and dry spatula

Question 36

Handling Solids: When weighing solid chemicals, put the reagent on a ______ glass

Answer 36

watch glass

Question 37

Handling Solids: Do not place the reagent directly on the pans of the _______

Answer 37

balance

Question 38

Handling Solids: Do not return excess reagents into its __________ container

Answer 38

original container

Question 39

it is the process of separating solid particles from liquid by pouring the mixture in a filter paper

Answer 39

Filtration

Question 40

Filtration it is the process of separating solid particles from liquid by pouring the mixture in a __________

Answer 40

filter paper

Question 41

solid left on the filter paper

Answer 41

Residue

Question 42

the liquid portion at the bottom of the container

Answer 42

Filtrate

Question 43

It is the process of pouring the liquid portion of the mixture to another container while not disturbing the solid particles that settle at the bottom of the container

Answer 43

Decantation

Question 44

solid at the bottom of the container

Answer 44

Residue/ sediment

Question 45

the liquid portion on top of the solution

Answer 45

Decantate