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Definition
| Thought everything was made up of earth, air, fire, and water. |
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| Believed everything was made up of tiny indivisible particles called atomos (indivisible). |
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Definition
| believed atoms could combine to form new substances. |
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Definition
| Made a model with a negative charge circling a positive charge. |
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Definition
| Made a model with electrons following a specific orbit. |
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Definition
| made a model of a nucleus with protons and neutrons. |
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Definition
| designed the periodic table of elements. |
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| What fraction of elements are metals? |
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Definition
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| What are the 5 elements in the earth's crust? |
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Definition
| oxygen, silicon, aluminum, iron, gold |
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Definition
| 2 or more substances that have been combined but can be seperated. |
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Definition
| a substance formed by the bonding of different elements. |
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Definition
| the smallest possible piece of matter |
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Definition
| an atomic number is the number of protons in the nucleus of an atom. |
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Definition
| an atomic number is the number of protons in the nucleus of an atom. |
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Definition
| a negatively charged particle inside an atom. |
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Definition
| a nuclear particle with no charge (neutral) |
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Definition
| the central core of an atom that contains protons and neutrons. |
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Term
| what elemnt did you study? |
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Definition
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Term
| What are some of the uses of this element? |
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Definition
| lightbulbs, explosives, ammonia, refrigerant for food products |
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Term
| Name 4 elements and their symbols |
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Definition
(possible) C Carbon
O Oxygen
N Nitrogen
H Hydrogen |
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Term
| Name three things you can find by looking at the periodic table of elements. |
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Definition
| atomic number, symbol, and type (metal, metalloid, gas, etc.) |
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Term
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Definition
| Any substance made up of 1 type of atom. It cannot be broken up by chemical means. |
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| What do atoms need to become stable? |
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Definition
| Atoms need a full outer shell. They need 2 in the 1st shell, 8 in the 2nd shell, and 8-18 in the 3rd shell. |
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Term
| Draw a picture of a covalent bond |
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Definition
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Term
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Definition
| An atom that is either missing an electron or has an extra electron. |
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