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15 Cards in this Set

  • Front
  • Back
The subatomic particles that make up atoms are
protons, neutrons, and electrons
Because they have the same number of ______, all _____ of an element have the same _____.
protons, isotopes, chemical properties
The main types of chemical bonds are
covalent and ionic
A water molecule is polar because there is an uneven distribution of _____ between the _____ and _____ atoms.
electrons, oxygen and hydrogen
Acidic solutions contain higer concentrations of _____ ions than pure water and have _____ values _____.
H+, pH, below 7
Basic, or _____, solutions contain _____ concentrations of H+ ions than pure water and have pH values _____.
alkaline, lower, above 7
Four groups of _____ _____ found in living things are _____, _____, _____, and _____.
carbon compunds, proteins, carbohydrates, lipids, and nucleic acids
Living things use _____ as their main source of energy
Plants and some animals also use carbohydrates for _____
structural purposes
Lipids can be used to _____, and are important parts of ______ and ______
store energy, biological membranes, waterproof coverings
Nucleic acids ____ and ____ hereditary, or _____, information.
store and transmit, genetic
Some proetins build tissues such as _____ and _____. Others transport _____ or help to _____.
bone and muscle, material, fight disease
Chemical reactions always involve the ______ of ______ in _____ and the ______ of new bonds in ______.
breaking of bonds, reactants, formation, products
Chemical reactions that _____ energy often occur _____. Chemical reactions that _____ energy will not occur without a ______.
release, spontaneously, absorb, source of energy
Cells use _____ to _____ up chemical reactions that take place in cells.
enzymes, speed