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33 Cards in this Set
- Front
- Back
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Greeks |
Were first to try to explain chemical reactions. |
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400BC |
In this date they thought all matter composed of: fire, earth, water, air. |
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Democritus |
First used word "atomos", meaning indivisible. |
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Atomos |
Means indivisible |
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Protons Neutrons Electrons |
3 main subatomic particles. |
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Protons and neutrons |
Strong forces that bind protons and neutrons together to form the nucleus, which is at the center of the atom. |
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Protons and Neutrons |
Both particles have about the same mass |
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Electrons |
Negatively charged with about 1/1840 the mass of proton |
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Electrons |
In constant motion in the space surrounding the nucleus. |
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Atoms |
Have equal number of electrons and protons. |
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Neutral |
Because this subatomic particles have equal but opposite charges, atoms are... |
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Nucleus |
Center of the atom |
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Electrons |
Line in something called shells |
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Shells |
Areas that surround the center of an atom |
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Orbital or energy level |
Other name for shell |
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Inorganic compound |
Typically lack carbon and Carbon-Hydrogen connected |
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Carbonic- Acid |
An example for inorganic compound |
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Organic compound |
Always contain carbon-Hydrogen connected |
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Methane |
An example for organic compounds |
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Inorganic compounds: Water |
It can be quite correctly argued that life exists on Earth because of the abundant liquid water. |
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1) Polar Molecule 2) Temperature Buffer 3) water is universal solvent |
2 reasons why water is an inorganic compound |
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Hydrogen bonding between water |
Makes water a temperature buffer |
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Solvent |
A liquid or gas that dissolves a solid, liquid or gaseous solute, resulting in a solution. |
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Polarity |
Water is a good solvent due to its |
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Hydrophilic |
Polar substances are known as |
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Polar substances |
Will mix well and dissolve in water e.g salt. |
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Non-polar substances |
Do not mix well with water (e.g. fats and oils) |
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Hydrophobic |
Non-polar substances are known as these. |
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Hydrophilic |
Water loving substances |
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Hydrophobic |
Water-fearing substances |
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Acid |
A substance that associates into one or more hydrogen |
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Base |
A substance that dissociates into one or more OH |
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Salt |
A substance that dissociates into cations and anions |
