Show:
Acids and Bases
Chemical and Physical Changes
Separating Mixtures
The Amazing Water
Mystery Category
100
Blue litmus paper.
How do you test liquids to see if they are a base?
100
Color, odor, temperature, weight
What are 4 different types of chemical reactions?
100
Air, magnets, boiling, sieve and filter.
What are 5 different ways to separate mixtures?
100
Surface tension.
What is the special property water has?
100
0-14.
What does the pH scale range from?
200
Red litmus paper.
How do you test liquids to see if they are an acid?
200
It can't be changed back.
What is the definition of irreversible?
200
Separating coffee grounds and water in coffee.
What is and example that we use filtering in our everyday life?
200
Cohesion.
When two particles of the same substance attract to each other, what is it called?
200
Weighing a substance to the equal volume of water.
How is density determined?
300
Cabbage juice.
What is another way to test liquids to see if they are an acid or a base?
300
It can be changed back.
What is the definition of reversible?
300
If there are magnetic substances involved.
When is the only time you can you magnets to separate mixtures?
300
Adhesion.
What is the attraction that occurs between two different substances called?
300
Soluble materials will dissolve in water and insoluble materials won't.
What is the difference between soluble and insoluble materials?
400
It is neutral.
When litmus paper turns green is it an acid, a base, or neutral?
400
A chemical reaction changes the substance and a physical reaction changes the way it looks.
What is the difference between a chemical change and a physical change?
400
Farmers.
Who are some people that use air to separate mixtures?
400
Water climbing up the walls of a straw.
What is an example of Adhesion?
400
Yes, to capture dust.
Are filters used in furnaces?
500
Bleach.
What is an example of a strong base?


500
Heat and cooling.
What is one way to reverse a chemical change?
500
Water.
If you wanted to separate salt or sugar from a substance, what would you use?
500
Yes, water is.
Is water used to separate mixtures (sometimes)?
500
Chemistry isn't always.
Is chemistry always dangerous?