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Chapter 1 Vocab

Across
Matter with a composition that is always the same
Atom that has a charge because it has gained or lost electrons.
Matter that can vary in composition
Positively charged particle in the nucleus of an atom
A change in matter in which the substances that make up the matter change into other substances with different chemical and physical properties
A mixture in which the substances are not evenly mixed
Anything that has mass and takes up space.
Substance made of only one kind of atom
Region at the center of an atom that contains most of the mass of the atom
Negatively charged particle that occupies the space in an atom outside the nucleus.
Down
Small particle that is the building block of matter
Single, separate
Electrical property of some objects that determine whether the subject is positive, negative, or neutral
One of two or more atoms of an element having the same number of protons, but a different number of neutrons.
A mixture in which two or more substances are evenly mixed, button bonded together.
The amount of protons in the nucleus of an atom of an element
Region surrounding an atom's nucleus where one or more electrons are most likely to be found.
Substance made of two or more elements that are chemically joined in a specific combination.
Uncharged particle in the nucleus of an atom
Two or more atoms that are held together by chemical bonds and act as a unit