Water is known as this because it dissolves nearly every solute at a regulated temperature.
What is the "universal solvent"?
100
If I am making a pitcher of lemonade, how would I make the pitcher MORE dilute?
By increasing the solvent (water).
100
An acid turns _________ litmus paper __________.
Blue; Red
100
Bases turn _________ litmus paper __________.
Red; Blue
100
The pH scale ranges from _____ to _____.
0; 14
200
Solutions, such as water and salt, can be separated using these two techniques.
What are evaporation and boiling?
200
This type of solution contains *as much* of a solute as possible at a given temperature.
What is a supersaturated solution?
200
Which of the following is NOT an acid: HCl, NH3, H3PO4?
NH3 (Ammonia is a base)
200
In the following recipe, which item is the base:
3 or 4 ripe bananas, smashed
1/3 cup melted butter
1 cup sugar (can easily reduce to 3/4 cup)
1 egg, beaten
1 teaspoon vanilla
1 teaspoon baking soda
Pinch of salt
1 1/2 cups of all-purpose flour
What is baking soda?
200
How would you describe a solution with a pH of 7?
Neutral.
300
Solutions and colloids differ not only in the size of the particles, but because of this factor.
What is how they affect the path of light?
300
The three ways to change solubility.
What are temperature, pressure, and TYPE of solvent?
300
Acids are often described as this, meaning they eat away at metals and carbonates.
What is corrosive?
300
Why do bases feel slippery to the touch?
They break down the fat layer in our skin.
300
How would you describe a solution with a pH of 13?
Highly basic.
400
Identify the solvent and solute from the label.
What is tomato concentrate (solvent) and salt/spice/onion powder (solute)?
400
Using *solubility*, how can I distinguish between baking soda and powdered sugar if BOTH are in unmarked containers?
Water will only dissolve 6.9 grams of baking soda, but 180g of sugar.
400
This acid, found in our stomachs, is very dangerous in concentrated amounts.
What is hydrochloric acid?
400
How can you identify Magnesium Hydroxide, or Mg(OH)2, as a base?
Because of the Hydroxide (OH) ion.
400
Estimate the pH of a lemon.
Approximate pH of 2-2.5.
500
The three ways to tell the difference between a solution and suspension.
What are the the particles of a solution will not settle out, are not visible to the eye, and will pass through a filter?
500
This vitamin is water soluble; it must be replenished every day to maintain a healthy lifestyle.
What is Vitamin C?
500
Where can you encounter acids in your daily life?
Answers vary -- Food, cleaning supplies, ...
500
A *strong* base produces (more/less) OH ions.
More
500
This reaction of an acid and a base in equal amounts produces a salt.