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Cards (25)
Positive
effect of chemical reactions on life and the environment
Applied in
food preservation
and
materials production
Fire control methods
Removing
heat
Corrosion prevention in metals
Reducing contact with
oxygen
Higher
temperatures
Generally
increase
the reaction rate
Concentration does not affect the rate of chemical
reaction
Amount of goods is not a possible cause of
spoilage
in
perishable
goods not properly stored
Activation Energy
The amount of energy required to
break
the
bonds
between the reacting molecules
Treating clothes stains with
higher
amounts of calamansi extract or
laundry
bleach
Removes the stains
faster
Factors affecting rates of chemical reactions important in food preservation
Temperature
Catalyst
Speeds up the
reaction
without being
consumed
Reducing the size of a solid reactant
Decreases
the rate of the
chemical reaction
Factors affecting the rate of chemical reactions
Temperature
The Law of
Conservation
of
Mass
applies to chemical reactions and states that mass can neither be created nor destroyed
Double displacement reaction
Involves the exchange of
ions
between
two
compounds
Single displacement reaction
A + BCB + AC
Oxygen
is required for a
combustion
reaction to occur
Decomposition reaction
A single compound breaks down into
two
or
more
simpler substances
Reaction between an acid and a base
Produces
water
and
salt
Filtration is not a type of chemical
reaction
According to the Law of Conservation of
Mass
, the total
mass
of substances before and after a chemical reaction remains the same
Synthesis reaction
Two or more
substances
combining to form a new
compound
Sign of a chemical reaction
Water boiling
The Law of Conservation of
Mass
states that
mass
cannot be created or destroyed during a chemical reaction
Chemical reaction
A process that changes the
chemical composition
of substances
Lowering the temperature
Slows down chemical reactions that cause food spoilage