CHEMISTRY Properties of Matter
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Anything that takes up space and has mass
A measure of how much matter is in an object
A measure of the gravitational force between an object and the earth
Not uniform throughout
What are some homogeneous things?
What are some heterogeneous things?
- Ice water
- OJ with pulp
A kind of matter that has a unique set of properties
Basic substances that can't be broken down into anything simpler by a chemical reaction
Two or more different elements chemically combined
Chemical symbols and subscripts that describe the composition of a compound
What are the important characteristics of all compounds?
- Constituents have a definite proportion
- Made and broken down by chemical reactions
- Properties differ from those of the constituents
What are the important characteristics of a mixture?
- Homogeneous or heterogeneous
- Varied portions of constituents
- Made and separated physically
- Properties are the same as constituents
Two or more substances physically combined
Homogeneous mixture of one or more substances dispersed as atoms, molecules, or ions throughout another substance
The dispersed substance in a solution
The substance in which the solute is dispersed in a solution
What are the types of solutions?
- Gaseous - Solvent and solute are both gases or vapors
- Liquid - Solvent is a liquid, Solute could be a solid, liquid or gas
- Solid - Solvent and solute are both solids
A liquid solution in which water is the solvent
What are two concentration units?
- Molarity - M
- Percentage - %
Concentration is the measure of solute per _____ of solvent
What are some ways to separate mixtures?
- Boiling point
- Mechanical picking
- Magnetic picking
- Mass spectroscopy
Type of property that is independent of amount
Type of property that is dependent on amount
Type of property that describes how a substance reacts with another
Type of property that doesn't describe reactions
What are some intensive property examples?
- Boiling/melting point
What are some extensive property examples?
- Surface area
What are some chemical property examples?
- X reacts with air
- X reacts with water
- X doesn't react with nitrogen
- X is combustible
What are some physical property examples?
- Boiling point
Processes that give off energy
Processes that absorb energy
All changes of matter involve ______
What are some forms of energy?
What kind of change produces a new substance?
What kind of change does not produce a new substance?
What are some examples of evidence of a chemical change?
- Odor change
- Sudden temperature change
- Color change
- Change in magnetism/conductivity
- Obvious new substance
- Change in mass
A statement of an observed phenomenon that does not explain how or why it occurs
What is the law of Conservation of Matter?
Matter cannot be created or destroyed by a chemical reaction
An explanation of how or why a phenomenon occurs based on limited information
An explanation of how or why a phenomenon occurs based on lots of reapeatable information
What is chemistry?
- The study of matter and its:
- Properties and
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