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14 Cards in this Set
- Front
- Back
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Elements and compounds cannot be broken down by ___________ processes.
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Physical
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What are made from atoms of two or more elements that are combined?
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"Compounds" are made from atoms of two or more elements that are combined.
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What is a mixture in which different materials can be distinguished?
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A "heterogeneous mixture" is one in which different materials can be distinguished.
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The particles that make up all matter are called _____ ?
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"Atoms" are the particles that make up all matter.
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Unlike compounds, mixtures do not always contain the same amounts of different ____________.
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substances
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What is either a element or a compound.
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substance
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What is a material made up of two or more substances.
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A "mixture" is a material made up of two or more substances.
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What is a sample of matter where all the atoms are alike?
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An "element" is a sample of matter where all the atoms contained within are alike.
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What is a mixture in which two or more substances are uniformally spread out?
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A "homogenous mixture" is one in which two or more substances are uniformally spread out
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What is a suspension?
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A Suspension is a mixture made of parts that separate upon standing. Products marked "Shake well before using" are often suspensions.
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What is a colloid?
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A "colloid" contains undisolved particles or droplets that stay mixed in another substance. Ex: Fog is a liquid-in-gas colloid. Smoke is a solid in gas colloid.
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Define "soluble."
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Soluble means "can be dissolved."
Ex:As tea particles dissolve, they spread evently trhough-out the water in this mixture. |
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What is "the "Tyndall Effect?"
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The "Tyndall Effect?" is the scattering of light by particles in a mixture, this effect can be seen in all colloids.
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What's the "law of conservation of mass?"
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the "law of conservation of mass" states that the mass of all substances present before a chemical change equals the mass of all substances remaining after.
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