Properties
The Laws of Unit 2
Diagrams
Separation Techniques
Random
100
What type of property is the boiling point of a substance?
Physical Property
100
Which law states that matter cannot be created or destroyed?
The Law of Conservation of Mass
100
How many different elements are in II?
2
100
Explain how crystallization works
Answers will vary
100
What is the lowest energy state of matter?
solids
200
These properties can be observed without changing the matter into a different substance
physical properties
200
If you have 10g of Iron reacting with 3g of oxygen, how many grams of iron oxide will you produce?
13g
200
What is II?
Pure substance- compound
200
How can mixtures be separated? Pure substances?
Mixtures= physically
Pure substances= chemically
200
How many elements are naturally occuring?
Over 90
300
This type of property can only be observed through chemical reactions that create a new substance
Chemical Properties
300
What is the law of definite proportions used to determine?
The percent composition of an element within a compound
300
What is I?
Pure substance- element
300
How does chromatography work?
different substances run different distances on the paper
300
Who discovered the Law of Conservation of Mass?
Antoine Lavoisier
400
What type of properties remain the same regardless of the amount of a substance present?
Intensive properties
400
Use the law of definite proportions to tell me the percent by mass of oxygen if there are 6g of oxygen in a 24g sample of H2O.
25%
400
What is III?
heterogenous mixture
400
How would you separate a heterogenous mixture?
Filtration or physically sorting
400
How are physical and chemical changes different?
chemical changes create a new substance whereas physical changes alter the substance but do not change it's composition
500
What type of properties are dependent upon the amount of a substance present?
Extensive properties
500
Two compounds can exist that include hydrogen and oxygen, but at different proportions. For example, H2O or H2O2. What law tells us this?
The Law of Multiple Proportions
500
What is iv?
Homogenous mixture
500
How would you separate a liquid homogenous mixture?
Distillation
500
What is one difference between a liquid and a gas?
A liquid has a definite volume whereas a gas will take up it's container