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49 Cards in this Set
- Front
- Back
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Atomic mass
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the number of protons and neutrons in an atom.
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the atomic mass number equation
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p+n
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What is the number below the symbol?
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the decimal
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How do u figure out the number 0of neutrons?
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you subtract
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Atoms combine to make what?
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compounds
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What are the two kinds of pure substances?
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-elements
-compounds |
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compound
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two or more different atoms bonded together.
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what does it mean to be bonded?
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stuck together
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mixtures
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are not easily seperated
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Atoms
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find thins to connect with and then are bonded to that specific object.
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molecule
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two or atoms bonded together
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What would happen if you combined carbon and oxygen?
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you would have a compound because the two are bonded together.
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O2
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is a molecule
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CO2
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is a molecule and a compound.
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What is a bond that holds two atoms together?
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this is called a covalent bond this describes the attraction that happens between two particles. this involves the sharing of electrons.
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the word co means what?
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sharing or learning how to.
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what does the word valent describe and mean?
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it describes two electrons in an atom -also means outer.
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what is the rule of atoms?
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atoms either wants 8 electrons in the outer ring or two.
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what are the atom pieces?
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-nuetrons (negatively charged)
-protons (postively charged) electrons stay the same |
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Atomic mass-
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the number of protons and neutrons in an atom.
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the formula for atomic mass
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p+n
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what is the symbol below
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the decimal
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Atoms
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combine to make compounds
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two kinds of pure substances
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elements and compounds
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compound
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two or more different atoms bonded together
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atoms
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they find things to connect two and are bonded to that
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molecule
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TWO OR MORE ATOMS BONDED TOGETHER
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what are two binds that hold atoms together.
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this is called a covalent bond this describes the attraction that happens between two particles it involves sharing of electrons.
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valent
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means outer layer
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Rule
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atoms either want 2 or 8 electrons in the outer ring
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atomic pieces
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neutrons- ( negatively charged)
Protons- (positively charged) electrons stay the same |
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atomic mass number
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number of protons and neutrons
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molecule
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a lot of atoms bonded together
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mass
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the description of how much is in it.
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volume
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another term for mass
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what is light an example of?`
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energy
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what are the building blocks of matter?
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elements
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what is the central part of the atom?
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the nuclease
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the nuclease is made uo of what two parts?
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neutrons and protons
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what determines the kind of atom
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a proton
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atomic mass
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is the whole number
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isotope
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a different number of neutrons in an element it has a variety of protons in it
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What happens to the electron to make a covalent bond?
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they share the electrons
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metals and non metals are called what
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ionic bond
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how can an ion be charged?
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it gets the extras and the it gives it away if not needed
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matter
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something that can be rearranged and reformed
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what happens when positive and negative atoms meet?
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the attract to each other
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what three things can elements be?
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compound
mixture element |
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what is found in the nuclease cloud?
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electrons
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