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25 Cards in this Set

  • Front
  • Back
How many bonds can Nitrogen make so it can be "happy"?
3
How many bonds can Carbon make to make it "happy"?
4
How many electrons are shared in a covalent bond?
2
Surface tension of water is produced by the interaction of what bonds?
hydrogen bonds
What is an element?
a substance that can not break down intoanother substance
What particles add weight to a neuclus?
protons and neutrons
What are protons?
positive particles in the neuclus
What are neutrons?
neutral particles in the neuclus
the number of neutrons are always _________, unless you have a ________.
Equal
Isotope (atoms of the same element with a different number of neutrons)
protons measure the ________
atomic number
________ is equal to the # of protons + # of neutrons
atomic mass
what are electrons?
negative particles that are located on different energy levels that don't add weight to the atom
atoms are most stable when there are _______ electrons in their outer shell (the octet rule)
8
outer shell electrons are called ________
valence electrons
covalent bond
when elements share electrons
compounds
substances made of atoms of two or more elements
Compounds are represented by _________
a chemical formula
coefficient
represents that more than one copy of that compound is present (these aren't always bonded together)
Chemical reaction
when elements are rearranged to form new molecules
left of the arrow
reactants
right of the arrow
products
arrow
yeilds
chemical equation must be ________
balanced
covalent bonds are between ________
atoms
hydrogen bonds are between ________
molecules