Wednesday, September 17, 2008

Physical science study guide 2 (test on 9-23)

Study guide 2 for physical science
(answers can be found in same chapters from last weeks window panes, chapters 6, 15 and 16)

Distinguish between a substance and a mixture.
Explain how the law of conservation of mass applies to chemical changes.
list four physical properties of water
Why is flammability a chemical property not a physical property?
Explain how Kinetic energy and temperature are related.
Explain the difference between boiling and evaporation.
how does pressure affect boiling point?
look at a heating curve, What is happening when the graph turns into a flat line?
Think about the relationship between temperature and pressure then explain why you should check your tire pressure when the temperature changes.
What is the Tyndall effect?
How is density relative to buoyancy?
complete a concept map showing how the following terms are related to each other: element, compound, solution, mixture, heterogeneous mixture, homogeneous mixture, colloid, substance
Explain the difference between endothermic reactions and exothermic reactions.
What does a pascal measure?
Explain thermal expansion..
What step is skipped during sublimation?
What are chemical properties?
In an experiment what is the dependent variable, what is the independent variable?
What type of temperature scale would you use to measure your temperature?
What temperature scale uses absolute zero ( coldest temp. ever recorded) as its zero?