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Stack #1133840
Chemistry
Question | Answer |
---|---|
What is matter? | Anything that has a mass and takes up space |
6 divisions of chemistry? | 1. organic 2. inorganic 3. physical 4. analytical 5. biochemistry 6. theoretical |
What is organic chemistry? | Study of most carbon-containing compounds. |
What is inorganic chemistry? | Study of non organic substances many of which have organic fragments bonded to metals. |
What is physical chemistry? | Study of properties and changes of matter and their relation to chemistry |
What is analytical chemistry? | The identification of the components and composition of materials. |
What is biochemistry? | Study of substances and processes occurring in living things. |
Phases of matter? | Solid, liquid, gas and plasma |
What is a compound? | Pure substance that can be broken down chemically. |
What is a mixture? | Blend of 2 or more kinds of matter, each of which retains its own identity and properties |
What is a chemical change? | A change in which one or more substances are continued into different substances. EX: carbon + oxygen = carbon dioxide |
What is a physical change? | A change in a substance that doesn't involve a change in the identity of the substance. EX: melting a material |
Properties of metals? | S and D blocks, Alkali metals can form +1 ions |
Properties of nonmetals? | Most reactive non-metals are highest |
Properties of noble gasses? | Non-reactive |
What are intensive properties? | Don't depend on the amount of matter present EX: melting point, boiling point, density, ability to conduct and transfer energy as heat. |
What are extensive properties? | Depends on the amount of matter present EX: mass, volume, and the amount of energy in a substance |
Accuracy: | How close to the goal you reach. |
Precision: | How close together your attempts are. |
Scientific notation: 13,400 | Move . to the left 4 places. Equals 1.34x10^4 |
Scientific notation: 9,675,100 | Move . to the left 6 places. Equals 9.6751x10^6 |