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30 Cards in this Set

  • Front
  • Back
A proposed solution or explanation of a scientific event in nature is called a
Theory
The factor being tested in an experiemnt is the
variable
The metric system is based or scaled on powers of
10
The basic unit of length in the metric system is the
meter
The basic unit of masss in the metric system is the
kilogram
anabolism
any process in a living thing that involes putting together or synthesizing complex subtances form simpler substaces
catabolism
breakdown of complex substances into simpler ones, resulting in release of energy
homeostasis
the process by which organisms respond to stimuli in ways that keep conditions in their body suitable for life
compound light microscope
uses both objective and ocular lens to form an image
limit of resolution
beyond this point objects get blurry
transmission electron miroscopes
shine a beam of electrons at a sample and mangnify the image of that sample onto a fluorescent screen
scanning electron microscopes
penicilike beam of electrons tha tscans back and forth across the surgace of a specimen.3-d pics, used to see detailed pics. of surface
The lens at the top of a compond light misroscope is called the
ocular lens
TO see atoms on a surface, use a
scanning probe microscope
isotope
Atoms of the same elemnt that have the same number of protons but different number of neutrons
chemical bonding
the interactions of involve the the combinding of atoms of elements in a process
atomic number
the number of protons in the nucleous
ionic bonding
a bond that involves a transfer of electrons
convalent bonding
a chemical bond formed by the sharing of electrons is known as a covalent bond
ion
they are formed when ionic bonding occurs these atoms are charged particles not neutral
mass number
total number of protons and neutrons
molecule
the combination of atoms that results forms a separate unit
Substances that enter into a chemcial reactions are known as
reactants
solvent
substance that does the dissovling
solute
the substance that is being dissolved
acids
compounds that release hydrogen ions into solution are know as acids
ex.hydrocholoric acid
bases
compounds that release hydroxide ions into solution
ex. soduim hydroxxide
pH scale
a measurment system that indicates the relative concentrations ofthese two ions, hydrogen and hyhydroxide
polymerization
large compounds are constructed by joinging togethere smaller compounds
monomers
smaller compounds