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Chapter 2 - Coggle Diagram
Chapter 2
Physical Properties describe a substance
Physical Properties
Can be observed without changing
Physical Changes
Change in physical property
Density
Density=Mass/Volume
Amount of matter in a substance
Chapter 2.1 Matter has observable properties
Chemical Properties and Change
Change
The change of one substance into another substance
Properties
How substances can form new substances
Chapter 2.1 Matter has observable properties
Chapter 2.3 Properties are used to identify substances
Substances have characteristic properties
Identifying Unknown Substances
Properties used for identifying substances
Heating properties
Substances respond to heating in different ways Some warm up very quickly, and others take a long while to increase in temperature.
Solubility
How much of a substance dissolved in a given volume of liquid
Electric properties
Some substances conduct electricity better than others. This means that they allow electric charge to move through them easily.
Magnetic properties
Some substances are attracted to magnets, but others are not
Denistity
Amount of matter in a substance
Mixtures can be separated by using the properties of the substances in them
Top and Bottom are both chapter 2.1
Chapter 2.2
Changes of state are physical changes
Matter can change from one state to another
Solids can become liquids, and liquids can become solids
Melting
The process in which a solid becomes a liquid
Melting point
The lowest point which a substance begins to melt
Freezing
The process in which a liquid becomes a soild
Freezing point
The temperature at which a specific liquid becomes a soild
Liquids can become gases, and gases can become liquids
Evaporation
The process in which a liquid becomes a gas
Sublimation
The process of a solid changing directly to gas
Boiling
Another process in which a liquid becomes a gas
Boiling point
When a liquid reaches a certain temperature needed to boil
Condensation
The process in which a gas changes its state to become a liquid