often used when components have very high boiling points and would otherwise be difficult to distill.

provide nucleation sites that give the liquid a place to start forming bubbles to prevent superheating; lower the boiling points of the substances to be distilled. When transitioning from liquid to gas during boiling, the liquid needs nucleation sites, or places to start forming bubbles. This is typically achieved either by scratching the inside of the flask or by introducing boiling chips. They do not alter boiling points of liquids

utilizes a rapidly spinning apparatus to separate particles by density. More dense particles, such as cells, gravitate toward the bottom of the spun tube, while less dense substances remain at the top in a liquid termed the supernatant.

Used to purify a solid product that contains impurities. This process involves the dissolution of the solid in a solvent and subsequent heating. The solid then dissolves and is cooled, causing it to solidify (crystallize) again. As the lattice structures of solids tend to exclude impurities, each subsequent recrystallization results in a progressively purer compound.

places to start forming bubbles. This is typically achieved either by scratching the inside of the flask or by introducing boiling chips.

to separate compounds according to boiling point. The component with the lower boiling point boils off first, leaving the remaining components in the original flask

Help

Options

focusNode

Didn't know it?
click below

Knew it?
click below

Don't Know

Remaining cards (0)

Know

retry

shuffle

restart

0:00

Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

Normal Size Small Size show me how

Laboratory Technique

Chemistry, Organic Chemistry, BIochemistry, Biology

Term	Definition
Vacuum Distillation	often used when components have very high boiling points and would otherwise be difficult to distill.
Fractional Distillation
Column Chromatography
Boiling Chips	provide nucleation sites that give the liquid a place to start forming bubbles to prevent superheating; lower the boiling points of the substances to be distilled. When transitioning from liquid to gas during boiling, the liquid needs nucleation sites, or places to start forming bubbles. This is typically achieved either by scratching the inside of the flask or by introducing boiling chips. They do not alter boiling points of liquids
Centrifugation	utilizes a rapidly spinning apparatus to separate particles by density. More dense particles, such as cells, gravitate toward the bottom of the spun tube, while less dense substances remain at the top in a liquid termed the supernatant.
Chromatography
Recrystallization	Used to purify a solid product that contains impurities. This process involves the dissolution of the solid in a solvent and subsequent heating. The solid then dissolves and is cooled, causing it to solidify (crystallize) again. As the lattice structures of solids tend to exclude impurities, each subsequent recrystallization results in a progressively purer compound.
nucleation sites	places to start forming bubbles. This is typically achieved either by scratching the inside of the flask or by introducing boiling chips.
Vacuum Apparatus	removes atmospheric pressure
Distillation	to separate compounds according to boiling point. The component with the lower boiling point boils off first, leaving the remaining components in the original flask

Created by: deleted user

Popular MCAT sets

Anatomy and Physiology

Organic Chemistry and Biology

Mcat Stuff

Physics and General Chemistry

Stack #189911

MCAT Amino Acid

MCAT-hormones

Chemistry highlights for Princeton Review Chem ch 1-3

molec bio + cellular respiration

Physics formula MCAT

Compounds and Stoichiometry through Kinetics and Equilibrium

MCAT-Enzymes

"Know" box contains:
Time elapsed:
Retries: