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The smallest unit of an element |
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Two or more atoms bonded together through a chemical reaction |
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A mixture is a substance made of more than one type of molecule/atom. Each type of molecule or atom keeps its original properties. Mixtures can be seperated based on physical properties. Ex: seperate m&ms based on their color |
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A substance formed by a chemucal reaction between two or more different atoms/ molecules. Physical properties often change wehn a chemical reaction occurs. Compounds must be seperated by a chemical reaction. NOT physically. |
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different mixture : where the particles are NOT evenly distributed/ dispersed. ex: cereal/ granola |
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same mixture: particles are evenly distributed/ dispersed-milk |
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thing that is dissolved. ex: salt in saltwater |
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The liquid that solute is dissolved in. ex: water in saltwater |
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Homogeneous mixture of a solid and a liquid where the solid does not settle out. |
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Heterogeneous mixture where the solute settles out over time. ex: chocolate milk |
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Hetero/Homogeneous mixture where the particle do not settle out but are normally quite large. Not see-through |
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a bond is made between two elements when compounds are formed. |
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Bond where neither element is a metal. Electrons are shared evenly between two elements. |
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At least one of the elements bonded is a metal. Electrons are stollen by one of the elements and the elements are bonded because of the attraction between possitive and negative Ions. |
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Covelently bonded compounds can also be split apart in water resulting in positive and negative ions. Ions in water can change the acidity of the water. |
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If H+ ions are released from the compound then the water becomes more acidic. |
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