Match the key terms with the following descriptions.
(a) the smallest particle of an element that retains the characteristic chemical properties of that element
(b) a change in which substances are converted into new substances that have compositions and properties different from those of the original substances
(c) anything that occupies space and is perceptible to the senses
(d) a substance composed of two or more elements combined in definite proportions
(e) a combination of atoms of one or more elements
(f) a process characterized by changes only in the physical properties of a substance, not in its composition
(g) the physical state in which matter has no fixed shape or volume but expands to fill its container completely
(h) the energy possessed by an object because of its position
(i) a tentative explanation for the properties or behavior of matter that accounts for a set of observations and can be tested
(j) the energy possessed by an object because of its motion
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