Suspensions, Colloids, and Solutions, Oh My!
Which of the following contains particles that will settle out over time?
(Colloid , Suspension, Solution )?
Suspension (remember, some students need a suspension in order to settle down.)
What is the unit symbol for molarity?
(for example grams is g, and liters is L)
M (known as Molar)
1.) What numbers bookend a pH scale?
2.) What pH is considered neutral?
2.) 7 = neutral
Salts always consist of a _________ and an ________.
CATION (positively charged, normally a metal) and an ANION (negatively charged, normally a nonmetal, such as a halogen).
What would be the solvent in a normal glass of lemonade?
(Lemon, Sugar, or Water)?
Water
What is the molar mass of NaCl?
~58 g/mol
A change of 1 on the pH scale represents a increase/ decrease in hydrogen ions by a factor of what?
10x
In neutralization reactions, what two substances are reacting?
Acid and base.
Distillations are used to separate what two states of matter from each other?
Liquids from other liquids, using different boiling points
2.3 moles of calcium chloride in 350 mL of solution.
Convert mL into L (350 mL becomes 0.35 L)
Draw a hydronium ion.
H3O+ (molecule should look like water but with an extra H bonded to O)
In a neutralization reaction between an acid and base, what are the two products?
A salt and water
Heterogenous
Calculate the molarity of the following solution:
1.2 grams of HCl in 0.025 L of solution.
1.32 M HCl
DOUBLE JEOPARDY!! Acidic foods normally taste ______; while basic foods normally taste _________.
Sour ; Bitter
NaOH (sodium hydroxide) and HBr (hydrobromic acid) react in a neutralization reaction. Write the formula for the salt they form.
NaBr
List two examples of colligative properties
Freezing point depression ; boiling point elevation
Calculate the number of grams needed to make the following solution:
1.5 L of 2 M NaOH
120 g NaOH
Acids are proton __________ ; while bases are proton ___________.
Acids = proton donors
Bases = proton acceptors
Cation --> Magnesium
Anion --> Iodine