Rate of Dissolution
What is the definition for Agitation?
The creation of movement to increase the rate of dissolution.
What is the definition for a solution?
A homogeneous Mixture of 2 or more substances combined.
Definition for Physical Property
A property that defines what something is using your senses.
Definition for Physical change
A change that affects the substance without changing it.
When canning coke, the workers add CO2 to the bottle to pressurize. This is an example of what type of change?
Chemical
Surface Area Increases what?
The rate of dissolution
What is a solute?
A substance that is dissolved into a solvent to create a solution.
Definition for Chemical Property
A substances ability to potentially react with other substances.
A student mixes 20 grams of sugar into 100 milliliters of water. After adding 50 more milliliters of water, the solution becomes-
Diluted
Agitation helps distribute in what and by what?
The solute through the solvent by increasing collision.
In sweet tea, what is the solvent?
Tea
Color is what type of property?
Physical
Physical Change
12 g of NaCl (salt) are dissolved into a beaker containing 50 mL of water at room temperature. How could the saltwater solution be diluted?
By adding more Water
What affects the rate of dissolution?
Temperature, Surface Area and Agitation
In pineapple juice, what is the solvent?
Water
What type of property results in an apple rotting?
Chemical
Using Yeast to break down Hydrogen Peroxide into water and Oxygen is an example of -
Chemical Change
Matter can undergo physical or chemical changes. Which of these are examples of physical
changes?
Burning wood/Breaking an egg/Cooking an egg/Freezing a popsicle
Breaking an egg and Freezing a popsicle
Temperature increases what 2 things?
The rate of dissolution and the amount of solute
Slime is an example of which?
Solution
A metal bike has the chemical property of -
Oxidizing
What is an example of a physical change that occurs during digestion?
Digestive enzymes in the stomach
Saliva in the mouth converts starches
Pancreatic enzymes break down fats
Teeth grind and tear food into smaller pieces
Teeth grind and tear food into smaller pieces
Which of the following would most increase the rate at which a solid crystalline magnesium nitrate dissolves in a liquid solvent?
Increasing the pressure on the liquid
Keeping the liquid still and undisturbed
Lowering the temperature of the liquid
Breaking the crystals into smaller pieces
Breaking the crystals into smaller pieces