Term
| what are the 3 types of radiation and what are they made of? |
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Definition
apha-made of 2 protrons and nuetrons
beta- made of a stream of electrons
gamma- made of electromagnetic radiation |
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Term
| how to identify and describe a family on the periodic table. how to determine the number of electrons in the outer energy level for atoms in families #1,#2 and families #13-18. the names of families in family 1-2, 17-18 |
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Definition
| families #1-2 have 1 and 2 electrons and there called the alkali and alkaline earth metals. families 13-18 you take 10 away to get the electrons. families 17-18 are called halogens and noble gases. |
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Term
| what are the 4 types of chemical reactions? and give a disciption for them. |
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Definition
synthesis reaction- when 2 or more elements combine to make a compound.
Decomposition reactions- a substance that breaks down into 2 or more elements.
single displacement - 1 element replaces another forming a new compound.
double displacement- 3 electrons in 2 compounds switch places forming 2 completely new compounds. |
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Term
| how to balance a simple equation. |
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Definition
| you multiply a number to get the same on the other end, but if theres to elements there you will have to do the same to the other. |
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Term
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Definition
| the electric charge of and atom (positive, negative) |
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Term
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Definition
| when an element bonds with another |
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Term
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Definition
| the number of elements in a molecule like h2O 2 hydrogens 1 oxyngen |
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Term
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Definition
| the number added infront or behind to balance the equation |
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