Unit 5 Test Review Flashcards
Define Solvent
Able to dissolve other substances.
Define Solute
The minor component (smaller amount) in a solution, dissolved in the solvent.
Define Solubility
Referring to the ability for a given substance, the solute, to dissolve in a solvent.
Name 3 things that can increase the rate of solubility
- Increase temperature
- Smaller particles (crushed tablet compared to whole tablet)
- Stirring the solution
If you have 80 milliliters of vinegar and you add 20 milliliters of water. In this solution, the water is identified as what part of the solution?
- The water would be the solute because it it the smaller amount
Is the process of dissolving a solute in a solvent a chemical reaction or a physical reaction? Explain why.
Physical change because the particles never combine
Why is water described as the universal solvent?
The unequal sharing of electrons between oxygen and hydrogen
Explain what happens to solubility when you increase the temperature.
- As you increase temperature the solubility increases
Why is water described as a polar substance?
- a positive end and a negative end
* positive charge
What most impacts whether a substance will dissolve in water?
- polarity (If it is polar it will dissolve, if non polar it will not dissolve)
What is pH level
Is a measure of how acidic or basic a substance is
Give characteristics of an acid
Acids taste sour
Acids react strongly with metals
pH level 0-6
When you combine an acid and base what happens (example: antacids and HCl)
Acids mixed with bases neutralize each other
What is a neutral solutions pH?
pH of 7
A liquid with a pH of 3.0 is how many times more acidic than one with a pH of 4.0
10 times
