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Science Review
Question | Answer |
---|---|
What is chemisty? | THe study of properties of matter and how it changes. |
What is matter? | stuff that takes us space, has mass or the stubstance(s) that make up an object. |
What is a substance? | a single kind of matter. |
Matter can be a what? | a Solid, Liquid,Gas, Plasma and bose. |
Every form of matter has has two types of properties. | Physical and Chemical Properties. |
Physical properties- | can be observed and don't change |
CHemical Properties- | can not be observewd directly characteristics of pure substances based on their ability to change into other substances. |
What is an element? | a pure substance that can not be broken down into any other substance. |
How many elements are there? | > than 100 |
what are Element Ratios represented by? | Chemical Formulas |
What is a Compund? | two or more elemants combined in a specific ratio held together by Chemical Bonds. |