C12 - experiential techniques & chemical analysis (Physical, chemical and separation techniques)
No description yet. This curated deck is ready for daily study.
Card preview (24)
define physical change
involves a change in substance’s form
define chemical change
involves making a new substance and change in energy
what measures time and units
-stop watch -seconds
what measures temperature and units
-thermometer -degrees Celsius
what measures mass and units
-mass balance -grams
what measures volume in liquid and units-1
-burette -cm^3
what measures volume in liquid and units- 2
-volumetric pipette -cm^3
what measures volume in liquid and gas and units
-measuring cylinder -cm^3
what measures volume in gas and units
-GAS syringe -cm^3
define pure
a substance that contains a single element or compound, not mixed with any other substances
define impure
a substance that contains more than 1 element or compound, mixed with other substances
define solvent
substance that dissolves a solute
define solute
a substance that is dissolves in a solvent
define solution
mixture that is made up of 1 or more substances
define mixture
contains 2 or more substances not chemically combined
define votality
how easily a substance evaporates (changes from liquid to gas)
define solubility
how easily a substance dissolves
is a solution a new product
no
define saturated solution
solution containing maximum concentration of a solute dissolved in a solvent at a given temp. (no more solute can dissolve in it)
opposite of saturated
diluted
define residue
a substance that remains after distillation, evaporation or filtration
define crystallisation
when a liquids that contains soluble solute is evaporated to leave the soluble solute behind
define filtrate
solution at pass through a filter paper
explain diluted, concentrated, saturated
diluted: -little solute concentrated: -moderate solute saturated: -max solute