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CSET Physical Science 3

Subjects : cset, science
Instructions:
  • Answer 50 questions in 15 minutes.
  • If you are not ready to take this test, you can study here.
  • Match each statement with the correct term.
  • Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. The sum of the protons and neutrons gives an ______________ for the element






2. Turns red under acidic conditions - and turns blue under basic (i.e. - alkaline) conditions






3. 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






4. The ability to perform work - _______ transformations result when a change of form takes place - All forms of ________ can be converted into other forms






5. Salt has a ___________ than water and therefore doesn't evaporate with the water






6. Height of the bounce of an object dropped o the material - related to elasticity






7. Hard matter is ______ with soft matter






8. Involve one substance changing states (not one substance changing into another) - Typically reversible Example: water - Can change from a gas (water vapor) to a liquid (water) to a solid (ice) - but the water molecules do not change






9. The particular state of water is determined by ___________ - the behavior of water at one atmosphere (sea level) - freezing at 0






10. Major greenhouse gases






11. Mechanical advantage of an inclined plane is the ______________ it spans - The inclined plane allows the same work to be done with a smaller force exerted over a greater distance Example: ramp






12. Solids - liquids - and gases






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






14. The ratio of the output to the input force - Also called leverage - Results in less force applied over a greater distance - Helps to make work easier






15. The amount of matter in a chemical substance - In everyday usage - is commonly confused with weight






16. Relies on the the first law - The acceleration of an object is proportional to the force applied (the more force - the more acceleration)

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17. A wave's height - the distance between its resting position and its crest






18. The number of waves produced in a given time






19. 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






20. A measure of the acidity or basicity of a solution - The ____ scale is not an absolute scale; it is relative to a set of standard solutions whose pH is established by international agreement - these measurements are important for medicine - biology -






21. The earth's __________ orients the iron needles of navigational compasses






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






23. 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






24. Symbol: He Protons: 2 Neutrons: 2 Mass: 4






25. A first - class lever - In its simplest form it consists of a rod attached to a wheel so that their movements are coupled when one of the parts is turned






26. The number of protons of that element - No two elements have the same atomic number - Elements in the periodic table are arranged in order of increasing atomic number






27. The path or circuit an electric current flows - Electricity requires a complete path for the electrons to flow - If the path is broken and there are not alternative paths for the electrons to follow - the electrons will not move - make it possible fo






28. Explains why objects appear bent as light passes from one transparent object into another - Light travels at different speeds through different objects (faster through air than through water or glass) - Responsible for rainbows and for the splitting






29. The top of a wave's 'hill'






30. Obtained by two different means - fission and fusion






31. If the pressure increases - the volume decreases; the reverse is true as well

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32. A form of energy that can be used to produce sound - light - heat - and power - it exists where the number of negative electrons does not precisely equal the number of positive protons - Electrons are held in the atom by an electrical force and have






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






34. In everyday situations - the weight of an object is ____________ - which usually makes it acceptable to use the same word for both concepts






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






36. Account for 17 elements in the periodic table - Lack the properties of metals but are very common - Include oxygen - nitrogen - and carbon - 7 metalloid elements - and 7 gases - Poor conductors of electricity






37. Elements with similar properties fall into the same vertical columns on the preriodic table to form _____ - Properties of elements change greatly across any one row (period)






38. Transferring of heat by the circulating motion of particles (in liquid or gas) - Occurs when hot air is less dense than cool air and therefore rises - When the heat moves in a circular pattern - convection currents are formed - Heat can be transferre






39. This is the one factor that will be intentionally changed during the experiment. Examples include changing the amount of salt that is added to water to determine its freezing point; introducing different soil types in germinating seeds; and changing






40. The resulting piece of paper or solution with water becomes a ________ (one of the oldest) - used to test materials for acidity






41. For every action (applied force) - there is an equal and opposite reaction

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42. For a homogeneous object - density is determined by dividing the mass by the volume (D = M/V) The mass is normally measured with an appropriate scale or balance - The volume may be measured directly (from the geometry of the object) or by the displac






43. 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






44. 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






45. In optics - refraction occurs when light waves travel from a medium with a given refractive index to a medium with another index Example: A ray of light will refract as it enters and leaves glass - assuming there is a change in the refractive index.






46. The rate of change of position with time v = ?d/?t (velocity = change of distance/change of time)






47. Symbol: U Protons: 92 Neutrons: 146 Mass: 238






48. A gas - discharge lamp that uses electricity to excite mercury vapor - The excited mercury atoms produce short - wave ultraviolet light that then causes a phosphor to fluoresce - producing visible light






49. A natural phenomenon by which objects with mass attract one another - Compels dispersed matter to coalesce - and thus it accounts for the very existence of the earth - the sun - and most of the macroscopic objects in the universe - Responsible for ke






50. Move around the nucleus in electron clouds - have a negative charge - and they are attracted to the positively charged protons in the nucleus - This attraction keeps the electrons in orbit around the nucleus







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