The Nature of Atoms
Elements found in living systems/Properties of H20
The Nature of Chemical Bonds
Water: A Vital Compound
Acids & Bases
100
Any substance the the universe that has mass and occupies space
What is matter?
100
Electrons in the outermost energy level
What are Valence Electrons?
100
Atoms that differ in their affinity for electrons.
What is electronegativity?
100
Single most outstanding chemical property of water is its ability to form weak chemical associations
What is hydrogen bonds?
100
Between 0-7 on a pH scale
What is acidic?
200
the loss of an electron
What is oxidation?
200
The 4 elements (CHON) are contained here.
What is organic compounds
200
A group of atoms held together by energy in a stable association
What is molecule?
200
The polarity of water causes it to be attracted to other polar molecules.
What is Adhesion?
200
Resists changes in pH.
What are Buffers?
300
Electrons are found in these regions.
What are Orbitals?
300
The amount of heat 1g of a substance must absorb or lose to change its temperature by 1 degree celsius
What is specific heat?
300
For bonds between identical atoms the affinity for electrons is obviously the same, and the electrons are equally shared.
What is nonpolar?
300
Hydrogen bonds hold water molecules together.
What is Cohesion?
300
Measures the hydrogen ion concentration.
What is pH scale?
400
Polar molecules which readily form hydrogen bonds with water.
What is hydrophilic?
400
A substance that increases the rate of a reaction.
What is a catalyst?
400
The surface water molecules are hydrogen bonded to molecules below them.
What is surface tension?
400
pH values above 7
What is basic?
500
Atoms of a single element that possess different numbers of neutrons.
What are isotopes?
500
The weight of a substance in grams that corresponds to the atomic masses of all of the atoms in a molecule of that substance.
What is a mole (mol)?
500
Atoms with opposite electrical charges (ions) attract.
What are ionic bonds?
500
The formation and breaking of chemical bonds
What is Chemical reaction?
500
pure water's pH balance
What is 7? (because it is neutral)
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