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14 Cards in this Set
- Front
- Back
- 3rd side (hint)
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Matter |
Anything that has mass & occupies space. |
Has three different states: (solid,liquid and gas) |
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Energy |
Defined as the capacity to do work, or to put matter into motion. |
Potential & Kinetic ____. |
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Elements |
Unique substances that can't be broken down into simpler substances by oridinart chemical methods. |
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Atoms |
More or less identical particles or building blocks; called atoms. |
Every element is composed of these. |
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What 4 elements make up about 96% of humans body weight? |
Carbon, Oxygen, Hydrogen & Nitrogen. |
C,O,H,N. |
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Atomic number |
The atomic # of any atom is equal to the number of protons in its nucleus & is written as a subscript to the left of its atomic symbol. |
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Mass # of an atom |
The sum of the masses of its protons and neutrons. |
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Isotopes |
Known elements have two or more structural variations is called isotopes. |
Have the same # of protons & electrons but differ in the # of neutrons they contain. |
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Molecule |
Combination of two or more atoms held together by chemical bonds. |
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Compound |
When two or more different kinds of atoms bind, they form molecules of a compound. |
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Mixtures |
Substances composed of 2 or more components (physically intermixed) |
There are only 3 basic types of these: solutions, colloids and suspensions. |
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What are the 3 basic types of mixtures? |
Solution(s), Colloid, Suspension. |
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Solutions |
Homogenous mixtures of components that may be gases, liquids, or solids. |
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Homogeneous |
The mixture has exactly the same composition or makeup throughout |
A sample taken from any part of the mixture and has the same composition (in terms of the atoms or molecules it contains) |
