The Chemical Basis of Life Study Guide

Atoms that have lost or gained electrons are called 2

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Unformatted text preview: that have lost or gained electrons are called (2) . (3) bonding occurs when oppositely charged ions are attracted to each other. ( 4) bonds result when two atoms share one or more pairs of electrons. If two pairs of electrons are shared, a (5) covalent bond is formed. Unequal sharing of electrons produces a (6) covalent bond, such as in water molecules. (7) bonds result when molecules with polar covalent bonds are weakly attracted to ions or other polar covalent molecules. 4. 5. 6. 7. Molecules and Compounds ❛❛Atoms can combine to form more complex structures.❜❜ Using the terms provided, complete these statements: Compound Dissociate Molecule 1. 2. A (1) is formed when two or more atoms chemically combine to form a structure that behaves as an independent unit. A (2) is a substance composed of two or more different types of atoms that are chemically combined. H2 and O2 are examples of a (3) that is not a (4) . On the other hand, an ionic compound is not a (5) because the ions are held together by the force of attraction between opposite charges....
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