Atomic Theory
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| atomic theory | scientific explanation of the structure of atoms and how they interact with other atoms.
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| What are the building blocks of all matter called? | Atoms
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| In current atomic theory, what are atoms mostly? | Empty space
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| What is the center of an atom called? | Nucleus
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| What is a nucleus? | Small, dense core of an atom
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| What is a nucleus surrounded by? | electrons
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| Atom | Smallest Unit of an element that maintains the properties of that element.
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| Proton | a positively charged particle found in the nucleus of an atom
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| Neutrons | particles found in the nucleus, has NO charge
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| Electrons | negatively charged particles that speed through an area around the nucleus called the electron cloud
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| element | type of matter mad of just one kind of atom
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| elements | can not be broken into simpler substances.
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| the atoms of an element | All Have the same number of protons
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| Number of protons | the number of protons is unique to a specific element. No other element will have the exact same number of protons.
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| Why can electrons be gained or lost? | Electrons are far from the nucleus
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| Can atoms of the same element have different number of neutrons | Yes, but the protons remain the same.
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| Give examples of elements | neon, mercury, chlorine, silver, copper
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| Molecule | Made up of two or more atoms joined together chemically
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| Compound | a substance formed by atoms from two or more elements.
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| Properties of a compound | often different from the properties of the elements that form it.
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Created by:
slhanlon
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