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ENVS 101: Exam 2 Review Questions with correct answers
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ENVS 101: Exam 2 Review Questions with correctanswers
Atom Correct Answer-The basic unit of a chemical element.
Proton Correct Answer-A subatomic particle that has a positive charge
and that is found in the nucleus of an atom
Neutron Correct Answer-A subatomic particle that has no charge and
that is found in the nucleus of an atom
Electron Correct Answer-A subatomic particle that has a negative charge
Isotope Correct Answer-An atom with the same number of protons and a
different number of neutrons from other atoms of the same element.
Molecule Correct Answer-A group of atoms bonded together
Compound Correct Answer-A substance made up of atoms of two or
more different elements joined by chemical bonds
Colvalent Bond Correct Answer-Chemical bond formed by electron
transfer between atoms, metal to metal or non-metal to non-metal.
Ionic Bond Correct Answer-Formed when one or more electrons are
transferred from one atom to another
,Ion Correct Answer-An atom or group of atoms that has a positive or
negative charge.
Hydrogen Bond Correct Answer-A type of weak chemical bond formed
when the slightly positive hydrogen atom of a polar covalent bond in
one molecule is attracted to the slightly negative atom of a polar
covalent bond in another molecule.
Organic Molecules Correct Answer-Carbon-based molecules
Inorganic Molecules Correct Answer-Non-carbon based molecules
Hydrocarbons Correct Answer-Compounds composed of only carbon
and hydrogen
Macromolecules Correct Answer-A very large organic molecule
composed of many smaller molecules
Polymers Correct Answer-Large compound formed from combinations
of many monomers
Carbohydrates Correct Answer-Broken down to glucose to provide
energy.
, Simple sugars (monosaccharides) Correct Answer-Building blocks of
carbohydrates
Lipids Correct Answer-Energy-rich organic compounds, such as fats,
oils, and waxes, that are made of carbon, hydrogen, and oxygen.
Proteins Correct Answer-Chains of amino acids
Amino Acids Correct Answer-A simple organic compound containing
both a carboxyl (—COOH) and an amino (—NH2) group, monomer of
proteins
Nucleic Acids Correct Answer-Macromolecules containing hydrogen,
oxygen, nitrogen, carbon, and phosphorus
Nucleotides Correct Answer-Basic units of DNA molecule, composed of
a sugar, a phosphate, and one of 4 DNA bases
Energy Correct Answer-The ability to do work or cause change
Potential Energy Correct Answer-Stored energy that results from the
position or shape of an object
Kinetic Energy Correct Answer-The energy an object has due to its
motion
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