arsenic
[noun]
a poisonous chemical element with properties of both metals and nonmetals that is grey in color, used in industry or as a pesticide
Vocabulary for IELTS (Academic) - Chemistry
Here you will learn some English words about chemistry, such as "arsenic", "catalyst", "distill", etc. that are needed for the IELTS exam.
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carbon
[noun]
a nonmetal element that can be found in all organic compounds and living things
Ex:
The
carbon
in
the
atmosphere
plays
a
crucial
role
in
the
greenhouse effect
.
copper
[noun]
a metallic chemical element that has a red-brown color, primarily used as a conductor in wiring
Ex:
Plumbing
pipes
made of
copper
are
known
for
their
durability
and
resistance
to
corrosion
.
gold
[noun]
a valuable yellow-colored metal that is used for making jewelry
Ex:
The
ancient
Egyptians
used
gold
to
create
intricate
jewelry
and
artifacts
.
iron
[noun]
a metallic chemical element with a silvery-gray appearance, widely used for making tools, steel, buildings, and various industrial products
Ex:
The
metalworker
melted
iron
to
create
a
molten
metal
for
casting
.
lead
[noun]
a heavy soft metal, used in making bullets, in plumbing and roofing, especially in the past
Ex:
In
ancient
times
,
lead
was
often
used
to
make
coins
and
statues
due to
its
ease
of
shaping
and
durability
.
acid
[noun]
a water-soluble chemical substance that contains Hydrogen and has a sour taste or corrosive feature with a PH less than 7
Ex:
Vinegar
is
an
example
of
a
weak
acid
known as
acetic acid
,
which
is
commonly
used
in
cooking
and
cleaning
.
catalyst
[noun]
(chemistry) a substance that causes a chemical reaction to happen at a faster rate without undergoing any chemical change itself
Ex:
In
the
Haber process
,
iron
is
used
as
a
catalyst
to
promote
the
synthesis
of
ammonia
from
nitrogen
and
hydrogen
gases
.
element
[noun]
a substance that is composed of only one type of atom, typically characterized by specific physical and chemical properties
Ex:
compound
[noun]
(chemistry) a substance that its molecules consist of two or more elements that are held together by a chemical bond
Ex:
The
chemical bond
in
a
compound
holds
the
atoms
together
tightly
.
to hydrate
[verb]
(chemistry) to combine and form a compound with water molecules
Ex:
Sodium carbonate
,
when
heated
,
loses
water
molecules
to
become
anhydrous
,
but
it
readily
hydrates
when
exposed
to
moisture
in
the
air
.
mixture
[noun]
(chemistry) a combination of two or more substances without forming a chemical bond or any chemical reaction
Ex:
Trail
mix
is
a
heterogeneous
mixture
of
nuts
,
raisins
,
and
chocolate
.
to adsorb
[verb]
to take in a liquid, gas, or other substance from the surface chemically or physically
balanced
[adjective]
evenly distributed or in a state of stability
Ex:
He
struck
a
balanced
approach
between
work
and
personal life
.
to catalyze
[verb]
to increase the rate of a chemical reaction
Ex:
Platinum
is
known
to
catalyze
the
oxidation
of
hydrogen
gas
in
fuel cells
.
chain reaction
[noun]
a chemical or nuclear process that is self-sustained and its products cause other processes of the same kind
chemical reaction
[noun]
(chemistry) a process in which several chemicals combine and form different substances
to dehydrate
[verb]
(chemistry) to lose water molecules during a chemical reaction
Ex:
During
the
synthesis
of
alcohols
,
the
alkene
molecule
reacts
with
water
to
add
an
-OH
group
,
while
simultaneously
dehydrating
to
form
an
alcohol
product
.
to distill
[verb]
to heat a liquid and turn it into gas then cool it and make it liquid again in order to purify it
Ex:
equation
[noun]
a symbolic representation of a chemical reaction showing reactants and products
Ex:
Balancing
a
chemical
equation
ensures
conservation
of
mass
.
formula
[noun]
a symbolic representation of a chemical substance using its constituent elements
Ex:
Chemists
write
the
formula
to
show
elemental
composition
.
to precipitate
[verb]
(chemistry) to become separated from the solvent in a solid form
Ex:
The
experiment
involved
mixing
two
solutions
to
observe
whether
a
solid
would
precipitate
out of
the
reaction
.
reaction
[noun]
(chemistry) a process in which several chemicals combine and form different substances
Ex:
Photosynthesis
is
a
key
reaction
converting
CO₂
and
water
into
glucose
.
aluminum
[noun]
a light silver-gray metal used primarily for making cooking equipment and aircraft parts
Ex:
The
soda cans
are
made
from
recycled
aluminum
,
which
helps
reduce
environmental
waste
.