Lab Apparatus Flashcards
Also known as a sample tube, a common piece of laboratory glassware consisting of a finger like length of glass or clear plastic tubing
Test tube
Used to hold upright multiple test tubes at the same time.
Test tube rack
Used for cleaning test tubes and narrow mouth laboratory glassware
Test tube brush
Used to hold test tubes. Used to hold test tubes in place
Test tube holder
Used as containers. These are only rough estimates of the liquid volume.
Beakers
Often used as reaction vessels, particularly in titrations
Erlenmeyer flask
Used to measure and store solutions with a high degree of accuracy.
Volumetric flask
Used to transfer liquids with a moderate degree of accuracy
Graduated cylinder
Transferring liquids with a fixed volume
Pipette
These pipettes are made of plastics and disposable
Disposable pipettes
A tube that is wide at the top and narrow at the bottom, used for guiding liquid into a small opening
Funnel
A small dish shaped liked a cylinder
Petri dish
Used to mixed chemicals and liquids for laboratory purposes. Made of solid glass like a straw
Stirring rod
A semi-permeable paper barrier. Used to separate fine substances from liquids or air
Filter paper
A circular concave piece of glass used as a surface to evaporate a liquid, to hold solids while being weighed, for heating a small amount of substance
Watch glass
used since ancient times to prepare ingredients by crushing and grinding them
mortar and pestle
contains a chemical that changes color as it touches with acid or base
LITMUS and pH PAPER
in acid the blue litmus will turn?
red
in base the red litmus will turn into?
blue
in pH scale if the numbers are 0-7 what is it called?
acidic
if the number in pH scale are from 7-14 what is it called?
alkaline
what is the neutral number in pH scale?
7
give 3 examples of laboratory techniques
cleaning glasswares, drying glasswares, heating a crucible, filtration, distillation, flame test, sublimation, reflux heating
it is named for the 3 beams which carry weights
measuring mass
highly sensitive lab instruments designed to accurately measure mass
measuring mass
process where liquid is converted to a gaseous state through wind and air temperature changes
evaporation
technique used to separate solids from liquids, the act of pouring mixture onto a filter paper that allows the passage of liquid.
filtration
process that can be used to separate a pure liquid from a mixture of liquids
distillation
refers to heating a solution with an attached condenser to prevent reagents from escaping
reflux heating
used in the identification of certain metals. based on the observation that light emitted
flame test
process of separation of liquid from solid and other non mixing liquids
decantation
while heating the test tube you should ____?
cover the open end
always add ___ slowly to acids
water
distillation involves both?
evaporation and condensation
the simplest filtration method
gravity filtration
more accurate in measuring liquids than pipettes
graduated cylinders
in measuring 0.012 g of sugar, it is more rational to use ___ than analytical balance
triple beam balance
conducted in a luminous flame
flame test
control the type of flame in bunsen burner
collar
the measure of acidity and alkalinity of the solution
pH
when red litmus paper turns blue it indicates that the solution is?
alkaline
when blue litmus paper turns red it indicates that the solution is?
acidic
the product formed during distillation process
filtrate
in measuring clear or non-colored solutions what should you read?
upper meniscus
when asked to determine the odor of chemicals you should?
sniff big amounts of fume
uses a heat source and water bath
indirect evaporation
observing proper and correct laboratory techniques is important in maintaining?
safety and attaining accurate results
To raise the height of the flame for ease of use
Barrel
To allow air to enter the burner
Air hole
It is wide and heavy so that the burner is less likely to topple
Metal base
To carry gas from the gas top
Gas hose
The filtered substances that are left at filter paper are called?
residue
