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Extensive and Intensive Properties

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Physical Properties

Physical properties are properties of a substance that can be observed without altering the identity of the substance.

Physical properties help chemists identify what a substance may be.

Credit: https://www.flickr.com/photos/jdhancock/3798008636/in/photolist-6MBMDw-6H83Jw-7A6c8v-isPCrN-6kqE4K-aHjF7F-aKtwLc-7Nojam-aJzibk-aK4SwM-dSg2dF-bwUysp-azBt4E-8vRkqQ-8F3iRT-AhpwF-8cvtZ4-AhuKf-7A9XpE-3A58xp-aLxUCZ-6kuQ1w-9XqsnT-7A6bV4-g4QZ6y-7RwFXD-9HfEgn-6kqE8D-5CAAz6-88Kewr-aL4cLn-6v6xPy-9WAxu6-6jhsH-etsgYb-6udddV-7Nojcs-bi1bhM-5hUpd1-7A6c3i-8Z6ogy-8njBpE-7A6bDa-949My9-AhyEh====6eRQMi-646jNU
Source: JD Hancock
License: CC BY-NC 3.0

[Figure1]

Extensive properties of matter are properties that depend on the size of a sample of matter. Examples of extensive properties include volume and mass.

Intensive properties of matter are properties that are universal for any sample size of matter. Examples of intensive properties include color and density. 

What are some "unique" identifiers of substances? Why do you think this is?

Answer

Classify whether or not each of the below properties is a physical property. If it is identify whether it is intensive or extensive.

  • boiling point
  • density
  • produces bubbles when in contact with NaOH
  • color
  • mass

Answers to this can be with the readings found here and here.

Knowing a bit about physical properties, you can easily determine certain types of substances. For example, what characteristics do metals have in common?

Define some common properties for the following types of substances: metals, noble gases, salts, covalent network solids. 

Look here for some help. 

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  1. [1]^ Credit: https://www.flickr.com/photos/jdhancock/3798008636/in/photolist-6MBMDw-6H83Jw-7A6c8v-isPCrN-6kqE4K-aHjF7F-aKtwLc-7Nojam-aJzibk-aK4SwM-dSg2dF-bwUysp-azBt4E-8vRkqQ-8F3iRT-AhpwF-8cvtZ4-AhuKf-7A9XpE-3A58xp-aLxUCZ-6kuQ1w-9XqsnT-7A6bV4-g4QZ6y-7RwFXD-9HfEgn-6kqE8D-5CAAz6-88Kewr-aL4cLn-6v6xPy-9WAxu6-6jhsH-etsgYb-6udddV-7Nojcs-bi1bhM-5hUpd1-7A6c3i-8Z6ogy-8njBpE-7A6bDa-949My9-AhyEh====6eRQMi-646jNU; Source: JD Hancock; License: CC BY-NC 3.0

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