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 ( crushed tablet compared to the 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 is the smaller amount.
Is this 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 a universal solvent?
The unequal sharing of electrons between oxygen and hydrogen.
Explain what happens to solubility when you increase the temperature.
As you increase the 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 a polar it will dissolve, if non polar will not dissolve. )
What is a pH level?
Is a measure of how acidic or basic substance is.
Give characteristics of an acid.
Acids tastes sour.
Acids react strongly with metals
pH level 0-6
When you combine an acid and a base what happens?
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 that one with a pH of 4.0.
Ten times
What is acid rain?
Acid rain is a rain or any form of precipitation that is unusually acidic, meaning that it posses elevated of hydrogen ions ( low pH )
What is the main sources of acid rain?
Nitrogen oxide and sulfur dioxide
Give characteristics of a base.
Tastes bitter
Slippery to the touch
pH level between 8-14
