1 - Matter and Energy
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Based on powerpoint and textbook. Bold info is the most important, italicized info is extra and you will be questioned on it in other flashcards.
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9 Terms
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Pure substance
**Matter that cannot be separated by a physical process.**
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*There are 2 types*
* *Element*
* *Compound*
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*There are 2 types*
* *Element*
* *Compound*
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Mixture
**Matter that can be separated by a physical process.**
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*There are 2 types*
* *Homogeneous*
* *Heterogeneous*
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*There are 2 types*
* *Homogeneous*
* *Heterogeneous*
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Element
A type of pure substance that cannot be decomposed by a chemical reaction
Ex: Pure gold
Ex: Pure gold
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Compound
A type of pure substance that can be decomposed by a chemical reaction
Ex: Ice (water)
Ex: Ice (water)
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Homogeneous mixture
Mixtures that are uniform throughout
Ex: Vinegar
Ex: Vinegar
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Heterogeneous mixture
Mixtures that are NOT uniform throughout
Ex: Salad dressing
Ex: Salad dressing
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Atomism
The belief that all forms of matter are composed of extremely tiny, indestructible blocks called atoms
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\*This is not a scientific theory. It is an example of natural philosophy
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\*This is not a scientific theory. It is an example of natural philosophy
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Atom
The smallest particle of an element that cannot be chemically or mechanically divided into smaller particles
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Scientific Theory
A concise, extensively tested explanation of widely observed natural phenomena