CSET Physical Science 3
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CSET Physical Science 3
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25 Questions

1. Anything that has mass and occupies space - Everything you see and touch is composed of matter

2. The characteristics that makes up the physical composition of a substance - Include color - form - electrical conductivity - and density

3. Symbol: Fe Protons: 26 Neutrons: 30 Mass 56

4. Take on the shape of their containers - yet cannot be compressed to any significant extent - The volume is constant unless evaporation is occurring

5. Known as insulators - In materials that act as insulators - the electrons are held tightly inside their atoms and the electrons cannot move freely - Include plastic - rubber - glass - air - and wood

6. A change of one substance into a different substance - Occurs whenever compounds are formed or decomposed - During this reaction - there is a rearrangement of atoms that makes or breaks chemical bonds - This change is usually not reversible - unlike

7. Results when electrical charges buildup or increase on the surface of a material - here - there is no current flowing as would be found in electrical outlets - When certain materials are rubbed together - electrons can move from one object to the oth

8. Formed by the chemical combination of two or more elements in a fixed ratio Example: water

9. Temperature scale -0

10. Glass has a higher ___________ than air and the different frequencies of light have different wavelengths (dispersion) - causing them to be refracted at different angles - so that you can see them - The different frequencies correspond to different c

11. A compound and portable inclined plane - A triangular - shaped tool used to separate two objects or portions of an object - lift an object - or hold an object in place - It functions by converting a force applied to its blunt end into forces perpendi

12. Obtained by two different means - fission and fusion

13. Symbol: O Protons: 8 Neutrons: 8 Mass: 16

14. Seems to travel in perfectly straight lines as rays - The direction of a ray changes at the interface between two transparent materials - like air and water

15. Composed of only one atom and cannot be separated into different substances except in some instances by radioactive decay or by nuclear reactions

16. After a rainstorm - the air is full of tiny drops of water - Each drop acts as a prism - splitting the light into the colors of the spectrum

17. Occurs when light travels only in straight lines - An object is visible because light is reflected from the object into our eyes

18. However - a fluorescent lamp converts electrical power into useful light more __________ than an incandescent lamp; lower energy costs offset the higher initial cost of the lamp

19. A compressed gas pushes out __________ in all directions

20. Other indicators of the ________ of an acid are that when acids react with metals - hydrogen gas is released causing bases to feel soapy when touched

21. Can multiply force or distance depending on the location of the fulcrum End: Output force Middle: Fulcrum Other end: Input force Examples: seesaws - scissors - pliers

22. Made up of molecules with the composition H20 - One _____ molecule is built from two atoms of hydrogen and one atom of oxygen

23. Designed to separate substances in a liquid through vaporization - Usually carried out in an apparatus called a still - which requires a boiler - a condenser - and a receiver Example: Purify ocean water

24. The rate of change of velocity with time a = ?v/?t (acceleration = change of velocity/change of time)

25. Hard matter is ______ with soft matter