Term
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Definition
| The total mass remains the same during a chemical reaction |
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Term
| What's a chemical reaction portraying of the law of conservation? |
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Definition
| Heating 5g of mercury oxide produces 1g of oxygen and 4g of mercury |
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Term
| What is an everyday example of the law of conservation? |
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Definition
| Burning 10g of wood produces 10g of ash/smoke/etc. |
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Term
| Describe the differences betewwn the different states of matter |
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Definition
| Solids, liquids, and gasses are all in different physical forms |
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Term
| What is a physical property? |
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Definition
| a property that describes the physical characteristics of an object |
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Term
| Give 3 examples of a physical change |
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Definition
Boiling water
snapping a stick
freezing water |
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Term
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Definition
| A change that changes the molecular makeup of an object |
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Term
| Give 2 examples of a chemical change |
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Definition
Burning wood
electrolysis |
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Term
| What is a physical change? |
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Definition
| A change in which the object is changed but the molecular formula stays the same |
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Term
| What is a chemical property? |
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Definition
| A property that explains how something reacts with something else. Ex: a chemical property of vinegar is that it reacts with baking soda |
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Term
| What is a pure substance? |
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Definition
| An object made out of only one element or molecule |
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Term
| What is an impure substance? |
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Definition
| A material that is made up of multiple elements or types of molecules |
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Term
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Definition
| A type of atom. The farthest a substance can be broken down |
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Term
| Give an example of an element |
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Definition
Calcium
hydrogen
oxygen
gold |
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Term
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Definition
| Two or more elements combined in a set ratio |
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Term
| What are some examples of a compound? |
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Definition
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Term
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Definition
| multiplegroin ultisols substances mixed into eachother |
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Term
| What is a homogeneous mixture? |
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Definition
| A mixture in which thpo different pieces cannot be distinguished by the naked eye |
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Term
| What is a heterogeneous mixture? |
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Definition
| A mixture in which the different substances can bdesist unguided by the naked eye |
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Term
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Definition
| A method used to separate two or more substances from eachother. Ex: colors/ dyes |
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Term
| What is an intensive property? |
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Definition
| A property that is not effected by the amount of a substance present in a sample. Ex: density |
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Term
| What is an extensive property? |
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Definition
| A property that varies with the amount of a substance in a sample. Ex: mass and volume |
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Term
| What is gas chromatography? |
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Definition
| This is used to separate traces of different substanceh mixed when in gas form |
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Term
| What are the 3 different typed of chromatography? |
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Definition
| Gas, which is used to seperate gas- gas, and gas- solid samples. Liquid, which is used for gas- liquid and gas- solid samples and lastly, supercritical fluid which is used for small substances. |
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