Today in Chemistry 11 we learned what matter was in general and in how many various states it can exist. ex. Solid, liquid, gas, plasma. We also learned 2 new forms, Aqueous and amorphous, where aqueous is something dissolved in water, and amorphous is something lacking definite form (shapeless). We also learned about the strength of the bonds between the forms and the 3 categories of changes:
-physical change ex. crushing tearing etc.
-chemical change ex. cooking rusting etc.
-nuclear change ex. no example, but assuming nuclear decay
We learned that in physical change, the shape or state of matter changes, and that changing from a solid to gas is often confused as a chemical reaction. We then learned that in a chemical change, a new substance is formed, the properties of matter change, and that it could change the conductivity, acidity etc. We also briefly learned the law of conservation of matter.
Quick summary:
-what is matter? Anything that occupies space and has mass
-Matter can exist in many forms: solid, liquid, gas, plasma, amorphous, aqueous
-bond strength from strongest to weakest: solid, liquid, gas, plasma
-Physical change is the change of shape or state of matter
-Chemical change is the change of the properties of matter and when new substances are formed
-Law of conservation of matter states that matter, like energy, is neither created or destroyed in any process
heres a neat explanation of a solid, liquid, gas website online
http://sciencecastle.com/sc/index.php/articles/view/2100
and heres one talking about chemical and physical changes
http://www.chem4kids.com/files/matter_chemphys.html
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