Chemical property
characteristic of something that allows it to change
to something new.
how easily one thing reacts with something else.
*Reactivity
Silver and gold have lower reactivity than many
other metals, which helps make them good
choices for jewelry.
flammability, toxicity, and reactivity with oxygen;
when a half-eaten apple turns brown in the air, a
chemical reaction with oxygen has occurred.
.Chemical properties include
* When a label warns you that a substance is toxic,
it is describing a chemical property of that
substance.
compounds change the chemical properties of pool
water, making it more acidic in order to eliminate
algae, bacteria, and insects.
Chlorine
a. Standing water, without added chlorine, can
become a breeding ground for insects, such as
mosquitoes.
b. Plants, algae, and bacteria can make a pool unfit
for swimming.
c. The more acidic chlorinated pool water can also
irritate the skin and eyes of swimmers.
Acids and bases
are not living. They have chemical properties that
make them both useful and harmful.
An acidic sample has a pH between
0 and 7
** A basic sample has a pH range between
**A neutral sample has a pH of exactly
Many acids react with, or
* One of the chemical properties of acids is that
they
Tomato sauce
Acid rain
Sulfuric acid
7 and 14
7 (water has a pH of 7)
corrode certain metals and can harm living
organisms.
corrode metal
is acidic enough to react with aluminum foil, but
will not harm human beings.
can damage plant and animal tissues
) is useful in industry, but causes
burns on skin.
Strong bases can
Some properties of bases are that they feel
Salts
. Table salt can be formed from
Calcium carbonate, or chalk, and ammonium
chloride, which is used in batteries, are
damage living tissue; ammonia fumes can cause
nosebleeds in some people.
slippery and bitter.
compounds made of a metal and nonmetal
and that are formed when acids and
bases react. Salts are formed when an
acids and bases react.
a base sodium hydroxide and hydrochloric acid.
useful salts.