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15 Cards in this Set
- Front
- Back
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Atoms
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The smallest unit of an element, that hold the properties of that element.
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Molecules
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Atoms that are put together chemically make molecules
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Elements
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A substance that cannot be broken into an simpler sub by chemical means.
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Compounds
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Substances made up of atoms of two or more different elements put together chemically.
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Pure Substance
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Two types: Elements and compounds. Both are examples of matter that can't be broken down into simpler subs by pysical means
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Mixtures
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A combonation of two or more elaments tha are not put together chemically.
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Suspentions
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Particles are biger then the particles in a solution. You can stir or shake these particles together but they will eventually separate.
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Solution
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A Homogeneous mixture that looks like it’s one substance.
Example: Salt water, the particles are really small so they don’t separate. |
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Homogenous mixture
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The particles are so small that they don’t separate from the mixture.
Example: Salt water, they won’t separate ever |
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Heterogenous mixture
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The particles are big so they eventually separate and form layers.
Example: Salad dressing, the olive oil and vinegar will separate and create layers |
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Pysical change
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It's a change of matter from one form to another. The Subs indentity doesn't change (It's chemical properties).
Ex: water freezes and turns into ice cubs but the water is still there just in a different form. |
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Chemicall change.
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When a sub changes into a whole new substance with different properties. There is usually a chemical reaction
Ex: Baking soda and vinegar, burning paper, digestion, ect. |
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How to get the Neutrons
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Atomic mass - number of protons = number of neutrons.
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How to get the Atomic mass
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number of protons + neutrons = the Atomic mass.
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Atomic number = what?
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the number of protons and electrons.
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