Shared Flashcard Set

Details

Biology 160
Biology 160 Vocabulary
38
Science
Undergraduate 1
04/15/2014

Additional Science Flashcards

 


 

Cards

Term
Adhesion
Definition
Attraction of water molecules to other polar molecules (capillary action)
Term
Atomic number
Definition
number of electrons an atom has
Term
Energy
Definition
electrons carry energy
the ability to work
Term
Ion
Definition
atoms that have gained or lost one or more electrons
Term
Ionic bonds
Definition
involve the attraction of opposite electrical charges
Term
Isotopes
Definition
atoms that have the same number of protons but diffrent number of neutrons
Term
PH scale
Definition
potential of hydrogen
Term
acid
Definition
Acid—any substance that dissociates in water and increases the [H+]
Term
atomic number
Definition
the number of protons in the nucleus
Term
base
Definition
Base—any substance that combines with [H+] when dissolved in water
Term
buffers
Definition
chemical substance that takes up or releases hydrogen ions
Term
cohesion
Definition
Attraction of water molecules to other water molecules (surface tension)
Term
covalent bond
Definition
form between two atoms when they share electrons (they are stronger than ionic bonds)
Term
dissolvent
Definition
what does the dissolving
Term
electron shells
Definition
energy levels
Term
electronegativity
Definition
how strongly an atom pulls on an electron in a covalent bond.
Term
electrons
Definition
negatively charged
Term
hydrogen bonds
Definition
weak bonds that form due to covalent bonds
Term
hydrophilic
Definition
water molecules that are attracted to water then dissolve in it.
Term
hydrophobic
Definition
molecules are repelled by water and do not dissolve
Term
mass number
Definition
number of protons, and neutrons in the nucleus
Term
most buffers are pairs of substances, one an acid and one a base
Definition
Term
neutrons
Definition
no associated charge
Term
nonpolar
Definition
do not have differing charges
Term
orbital of an electron
Definition
space where around the nucleus where an electron is most likely to be found
Term
polar molocules
Definition
The unequal sharing of electrons
Term
product
Definition
end material
Term
protons
Definition
positively charged
Term
radioactive decay
Definition
isotopes that are unstable and break up into particles with lower atomic numbers
Term
reactants
Definition
starting chemical
Term
rules for compound of chemical bonds
Definition
(1) the resulting compound is electrically neutral, and (2) outer electron orbits are filled.
Term
solute
Definition
what is being dissolved
Term
solution
Definition
the solute in the solvent
Term
what are the three principals of a chemical bond
Definition
1. ionic
2. covalent
3. hydrogen
Term
what determine the chemical behavior of atoms
Definition
electrons
Term
what happens as electrons move toward the nucleus
Definition
energy is released
Term
what is the potential # of electrons on the three cells and how are they devided
Definition
18 total electrons
2 first
8 second
8 third
Term
what type of atoms are more reactive
Definition
atoms with an incomplete electron orbitals tend to be more reactive
Supporting users have an ad free experience!