Separation Techniques
Types of Mixtures
Acids and Bases
Chemical and Physical Changes
Reactions, Chemicals and Random
100
How would I separate sand and pebbles?
A strainer.
100
What type of heterogeneous mixture is rocks and paper?
Solid and Liquid
Solid and Solid
Liquid and Liquid
Solid and solid
100
Do acids or bases have a pH from 7-14?
Bases
100
Are physical changes reversible?
Yes
100
Which part is the solvent? The sugar or coffee?
Coffee
200
How would I separate alligator clips from rocks?
A magnet.
200
Name a liquid and solid mixture.
Rocks and water
Table and jus
Milk and phone...
200
What colours do acids turn litmus paper?
Oranges, reds
200
Is this a physical or chemical reaction?
Chemical
200
True or False. The particle in a gas are super close together.
False
300
How would I separate salt from water? (2 possible answers)
Evaporation or distillation
300
Can a homogeneous solution be a heterogeneous mixture?
No
300
What is the pH of a neutral liquid?
7
300
Is this a chemical or physical reaction?
Physical
300
Name 1 way to speed up a chemical reaction.
- temperature. increase temperature = more collision.
- surface area. increase surface are = more collision.
- concentration. higher concentration = more collision.
- Stirring when possible
400
How would you separate rocks from water?
Decantation
400
The type of mixture where you can see they parts that make it up and it is easy to separate.
Heterogeneous Mixture
400
Acids taste ________.
Sour
400
True or False. A chemical reaction is irreversible.
True
400
Name 1 acidic substance and 1 basic substance.
Acid: orange jus, vinegar, lemon jus, black coffee
Base: bleach, baking soda
500
How would you separate thick syrup from milk?
Filtration.
500
Is this a homogeneous solution or heterogeneous mixture?
Homogeneous Solution
500
Lye is used for washing. It turns our yellow litmus paper blue. Is it an acid or a base?
Base
500
List 2 indicators of a chemical reaction.
-Sound is produced
-Colour change
-Heat is produced
-Light produced
-New substance is created
-Formation of a gas
500
How could I produce CO2 using an experiment?
Vinegar and baking soda