Term
Chemical Reaction
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Definition
| a process that causes a chemical change in an element or compound that leads to new substances being formed |
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Term
Chemical Equation
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Definition
an equation that uses chemical formulas to describe the chemicals that react and those that are produced from this reaction
Mg + S = MgS |
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Term
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Definition
| The chemicals that you start with that react together to form new substances |
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Term
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Definition
| The end product that you get when you mix chemicals together |
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Term
Law of Conservation of Mass
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Definition
| The law that states that matter is neither gained nor lost when a chemical reaction happens in a closed system |
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Term
Skeleton Equation
H1+ + S2- ---> H S |
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Definition
| a chemical equation in which the chemical formula is correct but the number of atoms are not balanced |
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Term
Balanced Equation
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Definition
| a chemical equation in which the number of atoms of each element is equal on both sides of the equation |
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Term
Synthesis Reaction
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Definition
a reaction where two elements combine to make a compound. Also called a combination reaction.
eg. Mg + S --> MgS |
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Term
Decomposition Reaction
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Definition
a chemical reaction where a compound breaks into individual elements. The opposite of a synthesis reaction.
KF --> K + F |
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Term
Single Replacement Reaction
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Definition
a chemical reaction in which an element reacts with a compound and one of the elements in the compound is replaced.
A + BC ---> AC + B |
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Term
Double replacement reaction
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Definition
A chemical reaction in which two compounds react with each other and two of the elements replace each other.
AB + CD ---> CB + AD |
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Term
Acid-Base neutralization reaction
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Definition
an acid and base are used as reactants and the product is a salt and water.
HCl + NaOH ---> NaCl + HOH
acid + base ---> salt + water |
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Term
Combustion Reaction
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Definition
| an organic subtance reacts with oxygen to give off heat and some times light |
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Term
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Definition
| the amount of a reactant consumed (used) per unit time OR the amount of product formed per unit time. Unit time is the time period that you state you are checking in - it could be a second, a minute, hour, etc. |
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Term
Kinetic Molecular Theory
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Definition
| The theory that states that matter is made up of tiny particles that are in constant, random motion; the more enery the particles have the faster they move |
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Definition
| a theory that states that in order for moving particles to react, they must first collide (bump into) with a certain minimum amount of energy |
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Term
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Definition
a substance, that when added to a reaction, increases the reaction rate without being consumed in the reaction.
It allows the reactants to use less energy so the product is reached faster. |
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