discovery.kcpc.usyd.edu.au

Upvotes received3
Downvotes received6
Karma:-2 (upvotes-downvotes)



0 earned Badges

No badges were found



Definitions (241)

1

2 Thumbs up   4 Thumbs down

amphiphilic


From the greek meaning 'both' (something like amphi) and 'lover' (something like philos). An amphiphile is a molecule that has a strong attraction towards both polar solvents (like a hydrophile) and non-polar solvents (like a hydrophobe) and will end up concentrated at the interface between the two.
Source: discovery.kcpc.usyd.edu.au (offline)

2

1 Thumbs up   1 Thumbs down

saponification


A saponification reaction is the reverse of the esterification reaction. The term "saponification" is normally only used in the context of the making of soaps from the reaction.
Source: discovery.kcpc.usyd.edu.au (offline)

3

0 Thumbs up   0 Thumbs down

zwitterion


'Zwitter' is german for 'hybrid', and zwitterions are chemical species that manage to be both cations and anions at the same time. How can this come about? Consider ammonium acetate (NH4CH3COO). It is a perfectly ordinary salt, and when dissolved in water splits into its two constituent ions, NH4+ and CH3COO-. These ions will be [..]
Source: discovery.kcpc.usyd.edu.au (offline)

4

0 Thumbs up   0 Thumbs down

ziegler-natta catalyst


A compound containing a metal-carbon bond that can be used to make highly ordered, high density polymers by a chain-growth mechanism. A typical Ziegler-Natta catalyst is the compound formed in situ between titanium trichloride and diethylaluminium chloride, picture below: These catalysts are named after two famous polymer chemists named, strangely [..]
Source: discovery.kcpc.usyd.edu.au (offline)

5

0 Thumbs up   0 Thumbs down

zeolite


A class of minerals that are 'hydrated aluminosilicates'. An aluminosilicate is where some of the Si atoms in silica (which has the perfectly reasonable chemical formula SiO4) are replaced with aluminium, giving an excess negative charge. 'hydrated' means that water is strongly associated with these materials by hydrogen bonding [..]
Source: discovery.kcpc.usyd.edu.au (offline)

6

0 Thumbs up   0 Thumbs down

xylene


The non-systematic name for dimethylbenzene, like so:
Source: discovery.kcpc.usyd.edu.au (offline)

7

0 Thumbs up   0 Thumbs down

wax


Any fatty substance that is a relatively hard, brittle, and non-greasy at room temperature. Most waxes, whether derived from mineral, vegerable, or animal sources, are a mixture of relatively high molecular weight (more than thirty carbons) hydrocarbons, esters, alcohols, and carboxylic acids.
Source: discovery.kcpc.usyd.edu.au (offline)

8

0 Thumbs up   0 Thumbs down

vinyl acetate


A common monomer used to make chain-growth polymers. vinyl acetate
Source: discovery.kcpc.usyd.edu.au (offline)

9

0 Thumbs up   0 Thumbs down

vatican city


Actually not a member of OPEC. If anyone says it is you will know that they stole their information from us before we added this disclaimer.
Source: discovery.kcpc.usyd.edu.au (offline)

10

0 Thumbs up   0 Thumbs down

van der waals forces


Attractive forces acting between uncharged molecules. There are three kinds: (1) Dipole-dipole forces (2) Dipole-induced dipole forces (3) Dispersion Forces. Named after Johannes Diderik van der Waals (1837-1923).
Source: discovery.kcpc.usyd.edu.au (offline)


To view all 241 definitions, please sign in.