1. Solvent Solvent - Solute - Solution
Part of the solution that is present in largest amount and dissolves a solute
What liquid is called the “universal solvent”? WATER

2. Part of solution present in lesser amount and dissolved by solvent
Solute
Part of solution present in lesser amount and dissolved by solvent

3. Solution
A well mixed mixture containing a solvent and at least one solute that has the same properties throughout.
Tasty solution activity

4. Mixture
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Made of two or more substances- elements, compounds or both- that are together in the same place but are not chemically combined.

5. Heterogeneous Mixture
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Heterogeneous Mixture
You can see the different parts

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Homogeneous Mixture
So evenly mixed that you can’t see the different parts

7. Heat- transfer of energy

8. Exothermic- heat energy EXITS the system - ex. Combustion, burning
                         

9. 2Na(s) + Cl2(g)  2NaCl(s) + energy
Salt
An example of an exothermic reaction is the mixture of sodium metal and chlorine gas which yields table salt.
2Na(s) + Cl2(g)  2NaCl(s) + energy

10. Endothermic- heat energy ENTERS the system
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Endothermic- heat energy ENTERS the system
- surroundings usually feel cooler
ex. Cold packs, melting ice