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Pearson Biology Midterm Review Questions and Answers -2024
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Pearson Biology Midterm Review Questions and Answers -2024
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Pearson Biology Midterm ReviewAtom - CORRECT ANSWER-basic unit of matter; made up of three subatomic particles
Proton - CORRECT ANSWER-positively charged particles
Neutron - CORRECT ANSWER-no charge; about same mass as a proton
Electron - CORRECT ANSWER-negatively charged particle; in constant motion around
nucleus
Nucleus - CORRECT ANSWER-center of an atom; made up of protons and neutrons
Element - CORRECT ANSWER-a pure substance that consists entirely of one type of
atom
Isotopes - CORRECT ANSWER-Atoms of the same element that differ in number of
neutrons; have the same chemical properties because the number of electrons doesn't
change
Atomic mass - CORRECT ANSWER-the total number of protons and neutrons in the
nucleus
Compound - CORRECT ANSWER-a substance formed by the chemical combination of
two or more elements in definite proportions
, Ionic bonds - CORRECT ANSWER-formed when one or more electrons are transferred
from one atom to another
Ion - CORRECT ANSWER-atoms that are positively or negatively charged
Covalent bonds - CORRECT ANSWER-formed when atoms share electrons
Molecule - CORRECT ANSWER-the structure that results when atoms are joined together
by covalent bonds; smallest unit of most compounds
Polarity - CORRECT ANSWER-a molecule in which the charges are unevenly distributed;
water has a partial negative charge on on end and a partially positive charge on the other
Hydrogen bond - CORRECT ANSWER-The attraction between a hydrogen atom with a
partial positive charge and oxygen with a partial negative charge; water is a polar
molecule that can form multiple hydrogen bonds
Cohesion - CORRECT ANSWER-an attraction between molecules of the same substance
Adhesion - CORRECT ANSWER-an attraction between molecules of different substances
Mixture - CORRECT ANSWER-a material composed of two or more elements/compounds
that are physically mixed together but not chemically combined
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