Biochem exam 1
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The study of matter & changes
Information that is gathered and interpreted
A T________: must be consistent with experimental evidence, must accurately produce the results of future experiments & must explain future observations
S______ L______ : statements that describe things that are consistently & reproducibly observed
M______: has mass and occupies space
P_______ P______: characteristics can be determined without changing chemical composition of matter
Matter is typically found in one of three different physical states or phases:
solid, liquid, gas
Solids have ...?
- Solids have fixed shapes and fixed volumes
- Liquids have variable shapes and fixed volumes
- Gases have variable shapes and variable volumes
Ability to do work & transfer heat
1)What are the two forms of energy?
2)Which one is stored energy and which is the energy of motion?
1 & 2) potential and kinetic
_______ is how close a measured value is to an actual value
________ is a measure of reproducibility
D____ ______ t_______ - the atom is the basic unit form which matter is constructed.
daltons atomic theory
M________ a_______ t________: normal matter is made from atoms which are built from subatomic particles: protons, neutrons, electrons
modern atomic theory
I________: Atoms of an element that have different # of neutrons
G________ s________ is when the electrons are in energy levels as near as possible to the nucleus.
R_______ I_______: unstable nuclei spontaneously disintegrate to become more stable releasing high energy particles and/or high energy electromagnetic radiation
N______ r_____: energy/ particle releases from this nuclear change
F________: an atom's nucleus splits to produce two smaller nuclei, a number a number of neutrons, and energy.
F_____: a nuclear process in which smaller nuclei combine to form a larger nucleus.
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