Term
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Definition
| Gains or absorbs heat/energy |
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Term
Exothermic
Hint: Opposite of Endo |
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Definition
| Loses or releases heat/energy |
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Term
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Definition
| Electrons on the outermost shell of an atom. Can be transfered or shared with another atom. |
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Term
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Definition
| Two or more elements combined |
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Term
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Definition
What any physical object is consisted of
Ex. The matter of which the world is made |
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Term
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Definition
The smallest physical unit of an element or compound.
-consists of one or more like atoms in an element
-two or more different atoms in a compound. |
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Term
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Definition
| A substance consisting of two or more substances mixed together |
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Term
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Definition
| Cannot be separated into simpler substances |
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Term
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Definition
Positively charged atom
ATOMIC # OR ELECTRON # |
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Term
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Definition
Nuetrally charged atom.
MASS # - PROTON # |
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Term
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Definition
Negatively charged atom.
ATOMIC # OR PROTON # |
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Term
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Definition
| The energy needed to start a reaction. |
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Term
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Definition
| Speeds up a reaction; by lowering the activation level. |
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Term
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Definition
Positively charged ion/ Strong conductor of heat and electricity.
Found on the left side of the staircase, EXCEPT for hydrogen.
Ex. Green section |
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Term
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Definition
Poor conductor of heat and electricity.
Found on the right side of the staircase; including hydrogen.
Ex. Orange section |
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Term
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Definition
Has properties of metals and nonmetals.
Found on the staircase.
Ex. Purple Section |
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Term
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Definition
| thickness/mass inside an object |
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Term
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Definition
r: substances going into a reaction, before it takes place. LEFT SIDE.
p: materials made after a reaction, RIGHT SIDE. |
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Term
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Definition
| reactants on left; products on right |
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Term
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Definition
| symbols and subscripts used to represent a compound |
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Term
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Definition
2 or more simple compounds combine to form a complicated one
ex. A+B->AB |
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Term
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Definition
opposite of synthesis. when 2 or more complex compounds combine to form a simple one
EX. AB->A+B |
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Term
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Definition
single: one element trades places with another
ex. A+BC ->AC + B
double: two different molecules switch places to form 2 different compounds
ex. AB+CD->AD+CB |
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Term
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Definition
| when oxygen combines with another compound to form water and carbon dioxide/exothermic because they produce heat |
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Term
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Definition
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Term
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Definition
| a variable whose value determines the value of other variables. |
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Term
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Definition
| a variable whose value is determined by the value of an independent variable. |
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Term
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Definition
| verifying the results of an experiment. |
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Term
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Definition
| the part of an experiment that remains the same |
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Term
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Definition
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Term
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Definition
I: metal and nonmetal
c: 2 nonmetals |
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Term
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Definition
| molecular ions, 2 or more atoms covalently bonded |
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