Monday, February 3, 2014

Science Study Guide

Science Test Wednesday, February 5th

Science Test Study Guide Chapter 1 Unit B

Important Vocabulary
matter-anything that has mass and takes up space
mass-the amount of material that an object has in it
volume-the amount of space that matter takes up
mixture-two or more substances that are mixed together but can be easily separated
solution-a mixture in which one substance spreads evenly throughout another substance
meter-a unit for measuring length
liter-a unit for measuring volume
graduated cylinder- a tool used to measure the volume of liquids
gram-the basic unit for measuring mass
density-how much mass is in a certain volume of matter
physical change-a change in matter that changes physical properties, but does not produce a different kind of matter
melting point-the temperature at which matter changes from a solid to a liquid
boiling point-the temperature at which matter changes from a liquid to a gas
freezing point-the temperature at which matter changes from a liquid to a solid
chemical change-a change in matter produces a different kind of matter

Important Information
-Three states of matter are solid, liquid and gas
-Molecules move faster as heat is added
-Molecules move slower as heat is removed
-Combining a pudding mix with milk is an example of a solution
-Making a vegetable salad is an example of a mixture
-To measure length, use a meter, millimeter or kilometer
-To measure the volume of an object with an irregular shape, such as a rock, use a graduated cylinder
-To measure volume use a liter or milliliter
-To measure mass, use a gram, kilogram or milligram
-Use a balance to find the mass of an object
-Water, syrup and vegetable oil separate in a cup because they have different densities
-In the example above, the syrup is denser since it is on the bottom
-Cutting paper, breaking a glass and changing states of matter are physical changes
-Making pancakes, rust, tarnish and fire are examples of chemical changes

*Use the pink units of measurements paper to help you remember which units you should use for large (long) and small (short) things. 

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