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Properties are traits that belong to specific substances (think: you OWN property)
Properties are traits that belong to specific substances (think: you OWN property)
The Properties of Matter can be described in two ways:
The Properties of Matter can be described in two ways:
Intensive properties are properties that DO NOT DEPEND on the amount of substance.
Intensive properties are properties that DO NOT DEPEND on the amount of substance.
For example, all ice will start melting at any temperature above 0 °C (32 °F)
For example, all ice will start melting at any temperature above 0 °C (32 °F)
Extensive properties are properties that DO DEPEND on the amount of substance
Extensive properties are properties that DO DEPEND on the amount of substance
For example, the more water you have in a cooking pot the longer it takes to boil the water
For example, the more water you have in a cooking pot the longer it takes to boil the water
Q: Why does the amount of substance make any difference in the properties of matter?
Q: Why does the amount of substance make any difference in the properties of matter?
A: Ice begins to melt at any temperature above 0° C [intensive], but which will take longer time to melt? A cooler of ice or a cup of ice [extensive]
A: Ice begins to melt at any temperature above 0° C [intensive], but which will take longer time to melt? A cooler of ice or a cup of ice [extensive]
The cooler of ice because there are MORE atoms inside which means it will take longer to melt the ice completely
The cooler of ice because there are MORE atoms inside which means it will take longer to melt the ice completely
*NOTE* Sometimes matter can change how it looks, but stay the same thing -- these are called physical changes.
*NOTE* Sometimes matter can change how it looks, but stay the same thing -- these are called physical changes.
For example, ice -- water -- steam, its all the same thing, but in different forms
For example, ice -- water -- steam, its all the same thing, but in different forms
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