Degrees Fahrenheit to Degrees Celsius
C = 5/9(F-32)
Degrees Celsius to Degrees Fahrenheit
F = 9/5(C) + 32
Degrees Celsius to Kelvin
K = C+273.15
Matter
anything that takes up space and has mass; composed of atoms
Atom
has an atomic number that is determined by the...
AFOQT - Science questions
and answers
Degrees Fahrenheit to Degrees Celsius - answer C = 5/9(F-32)
Degrees Celsius to Degrees Fahrenheit - answer F = 9/5(C) + 32
Degrees Celsius to Kelvin - answer K = C+273.15
Matter - answer anything that takes up space and has mass;
composed of atoms
Atom - answer has an atomic number that is determined by the
number of protons within the nucleus
Physical properties - answer can be observed without altering the
identity or chemical composition of the substance; density
solubility, malleability, odor, and luster are examples of physical
properties
Chemical properties - answer can only be observed through a
change in the chemical composition of the substance via a chemical
reaction; flammability, oxidative state, and reactivity with an acid
are examples of chemical properties
Mass number - answer the sum of the total number of protons in an
atom and the total number of neutrons in the atom; the variation in
the mass number is due to an imbalance of neutrons within the
nucleus of the atoms; If atoms have this variance in neutrons, they
are called isotopes
, Atomic mass - answer calculated by finding the relative abundance
of isotopes that might be used in chemistry, or by adding the
number of protons and neutrons of an atom together
Chemical reaction - answer a process that involves a change in the
molecular arrangement of a substance. One set of chemical
substances, called the reactants, is rearranged into a different set
of chemical substances, called the products, by the breaking and re-
forming of bonds between atoms. In a chemical reaction, it is
important to realize that no new atoms or molecules are introduced.
Four main types: combination, decomposition, combustion, and
oxidation/reduction reactions
Combination chemical reaction - answer two or more reactants are
combined to form one more complex, larger product. A+B > C,
where A and B are the reactants and C is the product.
Decomposition chemical reaction - answer occur when one
substance is broken down into two or more products. The bonds of
the first substance are broken, the elements are rearranged, and
then the elements are bonded together in new configurations to
make two or more molecules. C > B + A, where C is the reactant and
A and B are the products.
Combustion chemical reaction - answer involves oxygen gas as a
reactant. This mostly involves the burning of a substance. The
combustion of hexane in air is one example of a combustion
reaction.
Oxidation and Reduction chemical reaction - answer (redox or half)
reactions involve the oxidation of one species and the reduction of
the other species in the reactants of a chemical equation. This can
be seen through the tree main types of transfers (oxygen,
hydrogen, and loss of electrons from one species (oxidation agent)
and the gain of electrons to the other species (reduction agent)
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