Atomic Structure
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1. An electrically charged atom or group of atoms
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2. Anything that takes up space and has mass (weight)
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3. A unique substance composed of atoms having the same atomic number
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4. Negatively charged particles, forming part of an atom
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5. Subatomic particles that determine an atom's chemical behavior, or bonding ability
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6. The ability to do work
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7. The smallest particle of an element that retains the properties of the element
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8. The smallest particle of a compound, formed when atoms combine chemically via covalent bonds
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9. Positively charged particles forming part of an atom
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10. Name given to the electron shell that contains the most reactive electrons
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11. Subatomic particles responsible for most of an atom's mass are protons and _?_
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Use the diagram to answer questions 12 through 18.
12. What is the atomic number of this atom?
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13. What is its atomic mass?
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14. What atom is this?
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15. How many electrons would be needed to fill its outer (valence) shell?
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16. Would this atom most likely take part in forming ionic or covalent bonds?
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17. Is this atom chemically active or inert?
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18. If this atom had one additional neutron but the other subatomic particles remained the same as shown, this slightly different atom (of the same element) would be called a(n)
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19. Check the subatomic particles that are involved in the formation of chemical bonds.
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20. Check the subatomic particles that have a mass of 1 AMU
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