Unit 5 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
- 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 is 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 parts never chemical 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 water?
Polarity
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?
Acids mixed with bases neutralize each other
What is a natural 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
Ten times
