Reactive Reactions
What is a physical reaction?
A solid with a regular, repeating arrangement of atoms.
Now give a household example!
What is a crystal?
Sugar, salt, ice, etc.
A common household example of an acid.
What is vinegar, lemon juice, stomach juices, soda, etc.?
The type of mixture where the substance can NOT be distinguished from one another. (You can NOT see the difference between the parts).
What is a homogeneous mixture?
The type of chemical reaction where heat energy is released.
What is an exothermic reaction?
Two or more substances that have been combined but keep their own properities.
What is a mixture?
A common household example of a base.
What is baking soda, borax, laundry detergent, soap, antacids (like Tums), etc.?
The type of mixture where you CAN see the differences between the parts. (You CAN distinguish the different parts of the mixture.)
What is a heterogenous mixture?
The type of reaction when two or more substance interact with each other and change into a different substance.
What is a chemical reaction?
Molecules that are arranged in long chains of many repeating small molecules.
Now give a household example!
What is a polymer?
Plastics, proteins, carpet, wool, rubber, nylon, etc.
The numbers that represent acids on the pH scale.
What are 0-6?
(Technically, .1-6.9, but 0-6 is close enough for our purposes!)
A household example of a heterogeneous mixture.
What is trail mix or a salad or your junk drawer in your kitchen, etc.?
The type of chemical reaction where heat energy is absorbed.
What is an endothermic reaction?
Two or more elements combine to create a different chemical substance.
What is a compound?
What are 8-14?
(Technically 7.1-14, but 8-14 is precise enough for us.)
A household example of a homogeneous mixture.
What is milk, coffee, salt water, your blood, etc.?
Was Elephant's toothpaste an example of an endothermic or extothermic reaction? How do you know?
Exothermic -- the bottle was warm to the touch.
When one metal is disolved into another.
What is an alloy?
What is 7?
A household example of a compound.
What is salt, hydrogen peroxide, sugar, baking soda, etc.?