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Atoms Vocabulary

Across
Particles that are smaller than the atom.
The area surrounding the nucleus of an atom where the electrons are found.
The smallest particle of an element, made of electrons, protons, and neutrons.
A negatively-charged subatomic particle that orbits the atomic nucleus.
A conceptual model of the atom in which a small positively-charged nucleus is surrounded by planetary electrons.
A subatomic particle of the nucleus of an atom that is without charge that contributes to the mass of an atom
A state in which matter can exist with a quantifiable amount of energy and distinct from other states with different amounts of energy.
The sum of negative and positive charges.
Down
The area surrounding the nucleus of an atom where the electrons are found.
A property of matter; electrons are negatively charged; the numbers of protons and electrons in a material determine the charge of the material.
The tiny, very dense, positively-charged region in the center of an atom; made up of protons and neutrons
The number of protons in the nucleus of a single atom.
The electrons in the outermost energy level of an atom that influence how an element will react with other substances.
Rate at which a chemical substance tends to undergo a chemical reaction; significantly influenced by valence electrons of the reacting substances.
Form as a result of the loss or gain of electrons and are identified by the overall net charge.
The mass of an atom, approximately equal to the number of protons and neutrons in the atom.
A postively-charged subatomic particle of the nucleus of an atom that contributes to the mass of the atom.