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.