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Tell at least 3 things in the photograph that could be easily changed.

Explore the characteristics of matter, including physical and chemical properties, states of matter, and the law of conservation of mass. Learn how substances can change and interact in different phases.

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Tell at least 3 things in the photograph that could be easily changed.

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  1. Tell at least 3 things in the photograph that could be easily changed. www.flickr.com/photos/sawtoothphoto/2635763532/

  2. Physical and Chemical Properties “What is this stuff?”

  3. Matter Matter is anything that has mass and takes up space!

  4. Mass (physical) • A measure of how much matter is in an object.

  5. States of Matter • There are different “states” of matter. No, not like Texas, Oklahoma, New Mexico. States of matter are also known as phases (a physical state of matter). Elements and compounds can move from one phase to another phase when special physical forces are present. • Solid • Liquid • Gas

  6. All substances have properties…Including people! Example: People can be identified by their …

  7. What are properties? • Matter has observable and measurable qualities. • We can use general properties to identify substances. • Two basic types of properties of matter: Physical properties and Chemicalproperties:

  8. Physical Properties • Physical properties are used to identify, describe and classify matter. • Characteristic of a substance that can be observed (using your senses) without changingthe substance into something else.

  9. Physical Changes Breaking it Moving it Melting it Heating it Mixing it

  10. Chemical Properties • Chemical properties are characteristics involved when a substance interacts with another substance to change its chemical make-up.

  11. Chemical Changes • Burning something • (combustibility: ability to burn) • Making it react to some other substance (water) • Making it rust • CANNOT be reversed • Cooking something

  12. Quia: click on the red link more practice

  13. Alike? Different? • 1) Use the tree map to classify physical and chemical changes. Give 3 examples of each.

  14. Law of Conservation of Mass • According to the law of conservation of matter, the weight of a substance remains constant whether it is whole, separated into pieces, or in a different state.

  15. When an object or substance goes through a physical change, the weight of the object or substance stays the same. This is because matter can neither be created nor destroyed by physical or chemical changes. It can only change forms. For example, if 5 ounces of pure ice melts into liquid water, the liquid will also have a weight of 5 ounces.

  16. Think about it!! If the 5 ounces of liquid were allowed to boil in a pan until there was nothing left in the pan, what would be the weight of the steam created?

  17. Think about it!! If the 5 ounces of liquid were allowed to boil in a pan until there was nothing left in the pan, what would be the weight of the steam created? 5 ounces!

  18. If the mass of a pencil is 37 grams is broken into pieces, what is the total weight of the 5 pieces?

  19. If the mass of a pencil is 37 grams is broken into pieces, what is the total weight of the 5 pieces? 37 grams

  20. How can we apply this to our Knex cars? All of the pieces added together equals _________.

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