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23 Cards in this Set
- Front
- Back
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Protons have a _______________ charge. |
Positive (+) |
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Neutrons have a _______________ charge. |
Neutral or No Charge |
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Electrons have a _______________ charge. |
Negative (-) |
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Where are protons found in the atom? |
Nucleus |
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Where are neutrons found in the atom? |
Nucleus |
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Where are electrons found in the atom? |
Electron Cloud |
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Protons help determine an element's ____________. |
Identity |
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Where is all the mass of an atom located? |
Nucleus |
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The mass of an atom includes_____________ and _______________. |
Protons and Neutrons |
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What does APE stand for? |
A - Atomic Number P - Protons E - Electrons |
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When using APE, they are all ___________ |
Equal |
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What does MAN stand for? |
M - Mass # (minus) A - Atomic # = N - Neutrons |
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What is the charge of an atom that has 15 protons, 16 neutrons, and 15 electrons? |
Neutral |
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What do the valence electrons in an atom determine? |
Reactivity |
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What is a valence electron? |
Electrons in the outermost energy level. |
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How do you find the atomic number in a model of an atom? |
Count the protons |
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How do I find the mass in a model of an atom? |
Count the protons and neutrons |
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What is the formula for density? |
Density = Mass divided by volume |
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How do you know if an element has similar properties to another element? |
If they are in the same group. |
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Group Number tells you the number of |
Valence Electrons |
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Period Number tells you the number of |
Energy Levels |
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Which has more mass a proton or an electron? |
Proton |
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Which has more mass a proton or an atom? |
Atom |
