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41 Cards in this Set

  • Front
  • Back
The study of the composition and properties of matter
Anything that has mass and volume
What are 3 subatomic particles that make up an atom? Electrical charge?
proton +
neutron + -
electron -
What is composed of 2 or more atoms chemically combined? 2 or more different atoms?
Atoms of the same element with different numbers of neutrons
Force that holds atoms together
Chemical bonding
Type of chemical bond formed by the sharing of electrons
Covalent bond
Type of chemical bond formed by the transfer of electrons
Ionic Bond
Substance composed of a single type of atom
What is the most important property of water?
Polar molecule
has + and - on the ends
Molecules w/ an unequal distribution of electrically charged particles such as water molecules.
polar molecule
what holds polar molecules together?
Hydrogen Bonds
An atom that loses or gains electrons
What is the difference between cohesion and adhesion?
Cohesion is the attraction of like substances, and adhesion is that attraction of different substances.
What type of molecule doesn't dissolve in water?
nonpolar molecules
What is the range of an acid form on the pH scale?
What is the range of a base form on the pH scale?
What does an acid form when dissolved in water?
Hydrogen Ions
What does a base form when dissolved in water?
Hydroxide Ions
Contains carbon atoms that are covelant bonded to other atoms
Organic compound
4 types od organic compounds found in living things are..
carbohydrates, proteins, acids, and lipids
What are the 3 groups of carbohydrates?
What are 3 types of polysaccharides?
starch, cellulose, and glycogen
Name 3 types of lipids:
fats, oils, waxes
What 2 types od molecules join together to form a lipid?
fatty acids and glycerol
What is the difference between a sat. fatty acid and an unsat. fatty acid?
saturated- all carbon atoms joined by a single bond
unsaturated- 1 double bond joining carbon atoms
what is the basic building block of protein?
Amino Acids
What is the type of protein that speeds up chemical reactions?
What element does protein contain that lipids and carbohydrates don't contain?
What are two types of nucleic acids?
What is the basic building block of nucleic acids?
What are the 3 parts of a nucleotide?
5 carbon sugar, phosphate group, nitrogen base
What does DNA do?
Sotres genetic information
What does RNA do?
Helps make protein
Which contains more energy per gram - carbohydrate or lipid?
A mixture of 2 or more substances made up of a solvent and solute
Capacity for doing work
A process in which one or more substances are changed into others
Chemical Reactions
What type of energy is needed to start a chemical reaction?
Activation energy
What is the substance that an enzyme reacts with called?
What is the part of the enzyme to which the substrate binds?
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