u02a01 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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Required
20. Check the subatomic particles that have a mass of 1 AMU *
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