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Definition
| Number of protons within a the nucleus of a particular element. |
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Definition
| Smallest most basic unit of matter. |
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Term
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Definition
Positively charged center part of an atom.
Contains Protons and Neutrons |
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Definition
Mass = 1
Charge = +1
Location = Nucleus |
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Definition
Mass = 1
Charge = 0
Location = Nucleus |
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Term
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Definition
Mass = 0
Charge = -1
Location = Moving around the Nucleus |
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Definition
| The number of protons + the number of neutrons |
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Term
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Definition
Relationship between protons and electrons
Charge = Protons - Electrons |
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Definition
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Term
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Definition
| Negative parts within the central ball. |
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Term
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Definition
Postively charged central ball
Negative particles around the ball |
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Term
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Definition
Electrons orbit the nucleus in defined paths.
Electrons found in different "energy levels" |
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Term
Electron Cloud Model
(1926 - present) |
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Definition
Electrons are found with different "shells" or "clouds"
The do NOT follow defined paths as they move within their cloud. |
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Term
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Definition
The average mass of all an elmenets isotopes.
Located on the periodic table in a decimal form under the symbol(usually) |
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Term
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Definition
| Ability to be hammered or rolled into sheets |
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Term
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Definition
| Ability to be drawn into wire |
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Term
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Definition
Electrons found in the outer most shell
****Want to have 8****
(except the first shell takes 2) |
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Term
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Definition
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Term
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Definition
Same element but with a different number of neutrons.
Example:
Carbone-12 or Carbon-13
(Name)dash(Mass) |
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Term
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Definition
Group 1
Li, Na, K, Rb, Cs, Fr |
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Term
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Definition
Group 2
Be, Mg, Ca, Sr, Ba, Ra |
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Term
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Definition
Groups 3 - 12
Mn, Fe, Ni, Cu, W, Ag, Hg, Au....... |
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Term
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Definition
Touching the stair step
B, Si, Ge, As, Sb, Te, Po, At |
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Definition
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Term
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Definition
Group 18
He, Ne, Ar, Kr, Xe, Rn |
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Term
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Definition
| The combination or bonding of 2 or more atoms. |
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Term
| How many valence electrons does Na have? |
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Definition
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Term
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Definition
A chemical bond formed by the attraction between opposite charged ions.
Between a METAL and NON-METAL |
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Term
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Definition
Chemical bond formed between two or more atoms by sharing electrons.
Between a NON-METAL and NON-METAL |
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Term
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Definition
| A covelent bond with even sharing of electrons. The molecule is neutral with no charge. |
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Term
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Definition
| A molecule with uneven sharing of electrons. This results in a slightly positive and/or negative charge. |
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Term
| What does (cr) stand for? |
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Definition
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Definition
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Definition
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Definition
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| What does (aq) stand for? |
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Definition
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Term
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Definition
A change in a substances state of matter.
ie: changing from a solid to a liquid or a gas. |
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Term
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Definition
A change in the chemical structure of a substance. Resulting in a chemical reaction.
**creating new substances here** |
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Term
| Law of Conservation of Mass |
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Definition
Matter cannot be created or destroyed.
The # of reactants in an equation MUST equal the # of products. |
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Term
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Definition
The release of energy and heat in an experiment.
Causes a rise in temperature due to the release of heat/energy. |
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Term
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Definition
| Energy or heat is absorbed in this type of reaction. From the outside these reactions will feel cold. |
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Term
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Definition
Something that speeds up a chemical reaction.
It does NOT change it though, just makes it faster. |
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Term
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Definition
| This will stop or prevent a reaction from occuring. |
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