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36 terms

TEAS test - earth and physical science

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wavelengths ordered from short to long
gamma rays, x-ray, ultraviolet, visible, infrared, microwave, and radio waves
seven visible forms of radiation from long to short
red, orange, yellow, green, blue, indigo, violet
kinetic energy
energy of motion
KE=1/2 * mv^2
potential energy
stored energy
PE=mgh
m=mass of object (kg)
g=standard gravity constant (m/s2)
h=height where object is located (m)
Law of Conservation of Energy
energy is not lost but rather transferred back and forth between KE and PE
-given a fixed amount of total energy, an increase in KE will result in a decrease in PE and vice versa
-total will stay same
atomic number
number of protons
mass
protons + neutrons
atomic mass
average mass of all the known isotopes of an element
electrons
equals number of protons if neutral atom
periodic trends
see chem notes
globular proteins
proteins that are water soluble
calculate pH
pH=-log(H)
litmus paper changes
red - acidic
blue - basic
what does a difference of one unit on the pH scale below represent
a concentration difference of 10
saturated hydrocarbons
all single bonds
unsaturated hydrocarbons
have one or more double or triple bonds
alkenes
unsaturated with one double bond
alkynes
unsaturated with triple bonds
alkane
saturated hydrocarbon
how to figure out molecular formula of hydrocarbons
alkane and alkene : C(n)H(2n)
alkyne: C(n)H(2n-2)
metalloids
elements that may accept or donate electrons readily and posses a mixture of metallic and nonmetallic properties
metals
cations
nonmetal
anions
oxidation reaction
electron donation to produce more positive ion
reduction reaction
electron acceptance to produce a more negative ion
oxidation-reduction reactions
combustion, photosynthesis, and metabolism
combustion reaction
adding oxygen to reactants to product water and carbon dioxide
neutralization reaction
acid + base = water and salt
polar molecule
molecule that possesses both positive and negative atomic structure
ice is ___ dense then liquid water; therefore it ___
less, floats
Kelvin to Celsius
-273
water and specific heat
has the second highest specific heat, water undergoes minor temperature changes compared to the environment
anabolic
creation of larger molecules
catabolic
creation of smaller molecules
evaporation/vaporization
liquid to gas
H=M*L
condensation
gas to liquid
H=-M*L