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25 Cards in this Set
- Front
- Back
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How many bonds can Nitrogen make so it can be "happy"?
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3
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How many bonds can Carbon make to make it "happy"?
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4
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How many electrons are shared in a covalent bond?
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2
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Surface tension of water is produced by the interaction of what bonds?
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hydrogen bonds
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What is an element?
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a substance that can not break down intoanother substance
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What particles add weight to a neuclus?
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protons and neutrons
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What are protons?
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positive particles in the neuclus
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What are neutrons?
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neutral particles in the neuclus
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the number of neutrons are always _________, unless you have a ________.
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Equal
Isotope (atoms of the same element with a different number of neutrons) |
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protons measure the ________
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atomic number
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________ is equal to the # of protons + # of neutrons
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atomic mass
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what are electrons?
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negative particles that are located on different energy levels that don't add weight to the atom
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atoms are most stable when there are _______ electrons in their outer shell (the octet rule)
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8
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outer shell electrons are called ________
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valence electrons
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covalent bond
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when elements share electrons
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compounds
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substances made of atoms of two or more elements
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Compounds are represented by _________
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a chemical formula
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coefficient
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represents that more than one copy of that compound is present (these aren't always bonded together)
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Chemical reaction
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when elements are rearranged to form new molecules
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left of the arrow
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reactants
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right of the arrow
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products
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arrow
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yeilds
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chemical equation must be ________
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balanced
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covalent bonds are between ________
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atoms
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hydrogen bonds are between ________
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molecules
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