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Physical Science Vocabulary Review (Grade 8)

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Physical Science Vocabulary Review

1. 
               is anything that has                and takes up space.
  1. Matter, Mass
  2. Mass, Matter
  3. Atoms, Mass
  4. Protons, Matter
 
2. 
What is a pure substance that cannot be separated into simpler substances by physical or chemical means?
  1. Mixture
  2. Atom
  3. Element
  4. Compound
3. 
Elements and compounds that have fixed compositions can be called
  1. mixtures
  2. substances
  3. alloys
  4. aqueous solutions
 
4. 
This measurement is the amount of matter that occupies a given space:
  1. length
  2. area
  3. density
  4. volume
5. 
A liquid mixture in which particles can be seen and easily separated by settling or filtration is a
  1. solution
  2. suspension
  3. solvent
  4. solute
 
6. 
The substance in which does the dissolving.
  1. solute
  2. solvent
  3. mixture
  4. compound
7. 
A(n)               is the substance being dissolved in a solution.
  1. solute
  2. solvent
  3. substrate
  4. insolvent
 
8. 
A mixture in which the parts can be seen separately from the other parts is considered to be what type of mixture?
  1. Homogeneous
  2. Heterogeneous
  3. Compound
  4. Pure substance
9. 
When a substance has changed into something new or different so that the original substance is gone as in digestion, radioactive decay, or a battery in a flashlight producing light is known as
  1. physical property
  2. chemical property
  3. physical change
  4. chemical change
 
10. 
A gas has
  1. a definite shape and volume.
  2. a definite shape, but no definite volume.
  3. no definite shape or volume.
  4. no definite shape, but a definite volume.
11. 
Evaporation is a phase change from a                 to a                .
  1. gas; liquid
  2. liquid; gas
  3. solid; gas
  4. solid; liquid
 
12. 
Which of the following is the same as the freezing point of an object?
  1. its melting point
  2. its boiling point
  3. its sublimation point
  4. its evaporation point
13. 
The center region of an atom is called the
  1. element.
  2. nucleus.
  3. electron.
  4. proton.
 
14. 
The negatively charged particles in an atom that orbit around the nucleus are called                .
  1. Protons
  2. Neutrons
  3. Electrons
15. 
The space surrounding the nucleus is called the
  1. electron cloud
  2. ionic field
  3. nucleus field
  4. proton cloud
 
16. 
In what type of bond are electrons shared?
  1. ionic
  2. covalent
  3. nuclear
  4. hydrogen
17. 
What is the name of the formula scientists use to show the shapes of molecules based on how their atoms are connected?
  1. Chemical Formula
  2. Quadratic Formula
  3. Periodic Formula
  4. Structural Formula
 
18. 
An acid-base                 tells us whether we have an acid or a base.
  1. reaction
  2. mixture
  3. indicator
  4. molecule
19. 
A household cleaner has a pH around 10. It would be considered a:
  1. base
  2. acid
  3. neutral
  4. liquid
 
20. 
Which term refers to the number of protons in an atom and helps to place elements on the Periodic Table?
  1. atomic number
  2. atomic mass
  3. mass number
  4. isotope
21. 
Which elements are found close to the right side of the Periodic Table?
  1. nonmetals
  2. metals
  3. metalloids
  4. earth metals
 
22. 
Elements in the same group have the same number of                  .
  1. protons
  2. neutrons
  3. energy levels
  4. valence electrons
23. 
Electrically charged atoms are                
  1. molecules
  2. solutions
  3. isotopes
  4. ions
 
24. 
A chemical equation that shows the same number of each kind of atom is considered to be
  1. balanced
  2. unbalanced
  3. an incomplete reaction
  4. a replacement reaction
25. 
A substance that undergoes a change in a chemical reaction is a
  1. substance
  2. reactant
  3. an enzyme
  4. chemical
 
26. 
A                 is a push or pull and can make an object stop, speed up, slow down, or change direction.
  1. gravitation
  2. work
  3. force
  4. inertia
27. 
The force that opposes the motion of two surfaces sliding past each other is called                .
  1. acceleration
  2. inertia
  3. resistance
  4. friction
 
28. 
The property of an object that resists change in its motion is                
  1. mass
  2. inertia
  3. velocity
  4. momentum
29. 
What is the change of velocity over time called?
  1. speed
  2. distance
  3. acceleration
  4. time
 
30. 
Motion is a change in                       .
  1. position over time
  2. speed over time
  3. velocity over time
  4. acceleration over time
31. 
A place or object used for comparison to determine if something is in motion is called
  1. a position
  2. a reference point
  3. a constant
  4. velocity
 
32. 
What is a Newton?
  1. a unit of measure for weight
  2. a unit of measure for distance
  3. a unit of measure for mass
  4. a unit of measure for force
33. 
What is the attractive force that exists between all objects that have mass called?
  1. weight
  2. gravity
  3. contact force
  4. mass
 
34. 
The SI unit for measuring pressure is:
  1. Newton
  2. PSI
  3. Pascal
  4. Ampere
35. 
What is the unit for work?
  1. joule
  2. joule per second
  3. newton
  4. watt
 
36. 
Kinetic energy is
  1. the energy of time
  2. the energy of motion
  3. the energy of distance
  4. the energy of matter
37. 
The total amount of kinetic and potential energy in a system is called
  1. chemical energy
  2. mechanical energy
  3. radiant energy
  4. thermal energy
 
38. 
A screw is a(n)                wrapped around a central cylinder.
  1. lever
  2. wedge
  3. inclined plane
  4. wheel and axle
39. 
What characteristic of simple machines is often expressed as a percentage?
  1. Work
  2. Power
  3. Efficiency
  4. Mechanical Advantage
 
40. 
The ratio of work to time or the rate of work is known as:
  1. Force
  2. Mechanical Advantage
  3. Efficiency
  4. Power
41. 
A disturbance that transfers energy from place to place is called                
  1. medium
  2. energy
  3. wave
  4. compressions
 
42. 
The highest point of a wave is called the                .
  1. crest
  2. trough
  3. amplitude
  4. wavelength
43. 
What do we called the number of wavelengths that pass a point in one second?
  1. amplitude
  2. volume
  3. sound
  4. frequency
 
44. 
You can see your image in a shiny, flat surface because light waves bounce directly back at you and your eyes. This is an example of
  1. diffraction.
  2. reflection.
  3. refraction.
  4. transparency.
45. 
You stand in front of your friend. Your friend hides behind you. Why can't people see your friend?
  1. You are transparent.
  2. You are translucent.
  3. You are opaque.
  4. You are concave.
 
46. 
What is a material called that attracts iron and materials that contain iron?
  1. domain
  2. aurora
  3. magnetic field
  4. magnet
47. 
The area around a magnet in which it can exert a force is called:
  1. magnetic domain
  2. magnetic area
  3. magnetic source
  4. magnetic field
 
48. 
What is a measure of resistance in an electric circuit?
  1. Amps
  2. Voltage
  3. Watts
  4. Ohms
49. 
What is the transfer of thermal energy from one material to another by electromagnetic waves?
  1. Convection Current
  2. Temperature
  3. Radiation
  4. Heat
 
50. 
The transfer of heat by the movement of a fluid
  1. radiation
  2. infrared
  3. conduction
  4. convection

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