Unit 3 Solubility Flashcards
What’s the chemical formula for sodium nitrate?
NaNo3
What shapes are formed by these different crystal salts?
Potassium nitrate
Sodium chloride
KNO3: long pointy needle shapes
NaCl: Cubed
What is the chemical formula for potassium nitrate
KNO3
What is the chemical formula for potassium chloride
KCI
What is the chemical formula for sodium chloride
NaCl
What is the chemical formula for sodium bi carbonate
NaHCO3
What is the chemical formula for ammonia
NH3
Define:
Solubility
Solute
Solvent
Solution
- The concentration of the saturated solution/maximum possible concentration
- Substance being dissolved
- Usually a liquid in which a substance is dissolved
- A homogeneous micture
Define:
Mixture
Homogeneous
Saturated
Supersaturated
Precipitate
- One of more things combined to create a new solution
- The same composition everywhere after stirring or shaking
- A solution with a maximum concentration
- An unstable solution that dissolved more solute than its solubility
- A solid formed by a change in solution
Define:
Concentration
Watch glass
Evaporating dish
- The amount of solute in a given amount of solvent or solution
- A small shallow glass container
- A bowl with a small lip for evaporating substances
Define the effect of temperature on the solubility of a solid
The solubility increases with heat on the solubility of a solid
Describe the effect of temperature on the solubility of a gas
Heating a gas causes its solubility to decrease and dissolved better in cold water
What gas does the reaction between magnesium metal and sulphuric acid create?
Hydrogen gas
Describe the reaction of magnesium carbonate and sufuric acid
Creates carbon dioxide
What’s the laboratory test to identify hydrogen gas
When you put a burning splint into it it explodes with a pop
What’s the laboratory experiment for carbon dioxide
Bubbling it through lime water makes lime water chalky
What happens when you insert a wooden splint into CO2? Why isn’t this the test for canon dioxide
It will go out immediately. This isn’t the test because most gasses other than oxygen will do the same thing
What’s the laboratory test to identify ammonia?
Use wet pink litmus and put it in the gas. If it’s a base as ammonia is, it will turn blue.
Describe the solubility of ammonia gas in water. Why did the water rise into the container in our experiment?
Ammonia has a high solubility in cold water and a close to 0 solubility in hot water. When removing the stopper in cold water, the ammonia dissolved into it and the air pressure in the test tube decreased and the air pressure pushed the water into the tube.
What’s the formula for finding the concentration of a solution?
Mass of solute. X 100
———————
Volume of solvent
If a solutions concentration is equal to the solutions solubility, the solution is..
Saturated
If a solutions concentration is less than its solubility, the solution is ..
Not saturated
If a solutions concentration is more than its solubility, the solution is…
Super saturated
