Terms
The study of life and living things.
What is biology?
An atom with the same number of protons but a different number of neutrons
What is an isotope
Electrons shells are most stable when
They are full
The partial positive charge on water is on
What is hydrogen
The starting molecules of a reactions
What are reactants
Living things made of matter
What are organisms
The essential elements of life
What are CHON
The order of electron shell numbers is
What is 2,8,8
The partial negative on water is on?
What is oxygen
The end of a reaction
What are products
The smallest unit of matter that cannot be broken down while maintaining its characteristics
What are elements
Trace elements
What are calcium, phosphorous, potassium, sulfur, sodium, chlorine, magnesium
This determines the reactivity of elements
What is the number of of valence electrons
The partial negative charge will always fall on which molecule
What is the more electronegative molecule
Geckos climb with?
What are Van der Waals forces?
The tendency of an atom or functional group to attract electrons to itself
What is electronegativity
This has almost no mass
What is an electron
A bond that shares electrons
What is covalent
These bonds form salts
What are ionic
These elements are usually electronegative in cells
What are oxygen and nitrogen?
The amount of energy needed to remove an electron from a molecule
___ Is the number of protons in an atom, ___ is the average mass of the protons+neutrons
What is atomic number and atomic mass
A bond that is a total loss/gain of an electron
Ionic
These bonds are very weak
What are Van der Waals
These bond nucleic bases in DNA
What are hydrogen bonds