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"1. The study of nonliving matter:
a) Biology
b) Physics
c) Physical science
d) Chemistry
Physical science
"2. The study of living matter:
a) Physics
b) Physical science
c) Biological science
d) Biochemistry
Biological science
3. Branch of science that studies matter energy and their interrelationships
a) Atoms only
b) Matter and energy
c) Human anatomy
d) Chemical reactions"
Matter and energy
"4. Anything that has mass and occupies space:
a) Energy
b) Matter
c) Force
d) Weight"
Matter
"5. Principal characteristic of matter:
a) Shape
b) Energy
c) Mass
d) Space"
Mass
"6. The force an object exerts under gravity:
a) Mass
b) Weight
c) Energy
d) Density"
Weight
"7. SI unit of mass
a) Gram
b) Newton
c) Kilogram
d) Pound"
Kilogram
"8. Substance with definite and constant composition:
a) Mixture
b) Compound
c) Substance
d) Element"
Substance
"9. Two or more substances combined without chemical bonding:
a) Mixture
b) Element
c) Molecule
d) Compound"
Mixture
"10. Smallest particle of an element:
a) Atom
b) Molecule
c) Neutron
d) Proton"
Atom
"11. Two or more atoms chemically united:
a) Compound
b) Molecule
c) Proton
d) Mixture"
Molecule
"12. Two or more elements chemically united:
a) Simple substance
b) Compound
c) Mixture
d) Molecule"
Compound
"13. Energy is defined as:
a) Mass × velocity
b) Ability to do work
c) Force applied to matter
d) Movement of electrons"
Ability to do work
"14. Equation for work:
a) Mass × velocity
b) Force × distance
c) Energy × time
d) Mass ÷ acceleration"
Force × distance
"15. Energy of motion:
a) Potential energy
b) Kinetic energy
c) Thermal energy
d) Electrical energy"
Kinetic energy
"16. Energy due to position:
a) Heat
b) Kinetic energy
c) Potential energy
d) Electrical energy"
Potential energy
"17. Energy from motion of atoms/molecules:
a) Chemical
b) Heat (Thermal)
c) Nuclear
d) Mechanical"
Heat (Thermal)
"18. Faster vibration of atoms results in greater:
a) Kinetic energy
b) Thermal energy
c) Nuclear energy
d) Chemical energy"
Thermal energy
"19. Energy from movement of electrons:
a) Protons
b) Neutrons
c) Electrons
d) Molecules"
Electrons
"20. Energy stored in nucleus of atom:
a) Heat energy
b) Nuclear energy
c) Chemical energy
d) Electromagnetic energy"
Nuclear energy
"21. Electromagnetic energy travels as:
a) Vibrating molecules
b) Electric and magnetic fields
c) Collisions of atoms
d) Nuclear forces"
Electric and magnetic fields
"22. Which is NOT electromagnetic energy:
a) Radio waves
b) Microwaves
c) Sound waves
d) X-rays"
Sound waves
"23. Radiation is:
a) Energy emitted and transferred through matter
b) Energy stored in nuclei
c) Vibrational motion
d) Mixture of elements"
Energy emitted and transferred through matter
"24. Scientist who proposed matter-energy equivalence:
a) Bohr
b) Dalton
c) Einstein
d) Rutherford"
Einstein
"25. Three basic subatomic particles:
a) Protons neutrons electrons
b) Atoms molecules compounds
c) Electrons molecules isotopes
d) Energy matter atoms"
Protons, neutrons, electrons
"26. Scientist who developed first periodic table:
a) Dalton
b) Bohr
c) Rutherford
d) Mendeleev"
Mendeleev
"27. Scientist who developed nuclear atom model (1911):
a) Bohr
b) Rutherford
c) Dalton
d) Einstein"
Rutherford
"28. Scientist who expanded atom structure with electron orbits:
a) Rutherford
b) Bohr
c) Einstein
d) Mendeleev"
Bohr
"29. Charge of a proton:
a) Negative
b) Neutral
c) Positive
d) None"
Positive
"30. Charge of an electron:
a) Positive
b) Neutral
c) Negative
d) Zero"
Negative
"31. Charge of a neutron:
a) Positive
b) Neutral
c) Negative
d) Variable"
Neutral
"32. Mass number (A) equals:
a) Protons only
b) Protons + Neutrons
c) Electrons only
d) Protons + Electrons"
Protons + Neutrons
"33. Energy needed to remove electron from atom:
a) Potential energy
b) Electron binding energy
c) Ionization
d) Work energy"
Electron binding energy
"34. Unit for binding energy and X-ray energy:
a) Volt
b) Joule
c) Electron volt (eV)
d) Watt"
Electron volt (eV)
"35. 1 keV equals:
a) 1 electron volt
b) 100 electron volts
c) 1000 electron volts
d) 10,000 electron volts" ,
1,000 electron volts
"36. Elements important in radiology:
a) H O C I Ba W Mo Pb
b) Na K C Ca
c) S P Fe Mg
d) He Ne Ar Kr"
H, O, C, I, Ba, W, Mo, Pb
"37. Periodic table arranged by:
a) Atomic weight
b) Atomic number (Z)
c) Valence electrons
d) Neutron count"
Atomic number (Z)
"38. Maximum electrons per shell formula:
a) 2n²
b) n²
c) 8n
d) n³"
2n²
"39. Octet rule states outer shell can hold:
a) 2 electrons
b) 4 electrons
c) 6 electrons
d) 8 electrons"
8 electrons
"40. Elements with full outer shells are:
a) Reactive
b) Inert and chemically stable
c) Isotopes
d) Ionized"
Inert and chemically stable
"41. Key property distinguishing one element from another:
a) Mass
b) Neutron number
c) Atomic number (protons)
d) Valence"
Atomic number (protons)
"42. Atom with same protons but different neutrons:
a) Ion
b) Isotope
c) Molecule
d) Compound"
Isotope
"43. Process when atom gains/loses electrons:
a) Ionization
b) Isotope formation
c) Fusion
d) Radiation"
Ionization
"44. Positive ion forms when atom:
a) Gains electron
b) Loses electron
c) Splits nucleus
d) Fuses protons"
Loses electron
"45. Negative ion forms when atom:
a) Gains electron
b) Loses electron
c) Splits nucleus
d) Emits photon"
Gains electron
"46. SI unit of energy:
a) Electron volt
b) Joule (J)
c) Watt
d) Newton"
Joule (J)
"47. Unit of mass for atomic particles:
a) Kilogram
b) Gram
c) Atomic mass unit (amu)
d) Mole"
Atomic mass unit (amu)
"48. Scientist who published first atomic theory:
a) Dalton
b) Bohr
c) Rutherford
d) Einstein"
Dalton
"49. Greek concept of 4 basic components of matter:
a) Earth Wind Water Fire
b) Air Water Earth Fire
c) Heat Cold Light Dark
d) Metal Wood Fire Water"
Air, Water, Earth, Fire
"50. Outermost electron shell is called:
a) Nucleus
b) Proton shell
c) Valence shell
d) Octet shell"
Valence shell
The unit of mass is the
a) m/sec
b) kg
c) mm
d) cc
b) kg
2. An electron is _____ charged and has a mass of ________ amu(s).
a) positively-1
b) negatively- 0.000548
c) neutral- 1
d) positively- 0.000548
b) negatively-0.000548
3.** The orderly arrangement of elements in the periodic table is based upon
a) atomic weights
b) mass number
c) neutron number
d) atomic number
d) atomic number
4.** Photon wavelength is
a) inversely proportional to photon velocity
b) directly proportional to photon frequency
c) inversely proportional to photon frequency
d) usually designated by the letter c
c) inversely proportional to photon frequency
5.** All of the following are true of electromagnetic energies EXCEPT:
a) They are illustrated as sinusoidal waves.
b) They possess both wave and particle characteristics.
c) The relationship between frequency and wavelength is direct and proportional.
d) They are arranged in an orderly spectrum according to frequency and wavelength.
c) The relationship between frequency and wavelength is direct and proportional.
6.** The maximum number of electrons found in any energy level (shell) at any point in time is calculated by the formula
a) V = I × R
b) W = F × D
c) N = amu × Z
d) 2n²
d) 2n²
7.** The sum of protons and neutrons in a nucleus is called the
a) electron number
b) atomic weight
c) quantum number
d) mass number
d) mass number
8.** Groups of the periodic table
a) represent elements with the same outer electron configuration
b) are horizontal
c) represent elements with the same atomic density
d) none of the above
a) represent elements with the same outer electron configuration
9.** A period in the periodic table is
a) represented by a column
b) vertical
c) elements with the same number of shells
d) determined by the valence electrons
c) elements with the same number of shells
20.** The periodic table of the elements was developed by ___ in the late 19th century.
a) Bohr
b) Rutherford
c) Mendeleev
d) Roentgen
c) Mendeleev
21.** Rutherford's experiments in 1911 showed that the atom was composed of
a) electrons with well-defined orbits
b) a nucleus with an electron cloud
c) electrified plum pudding
d) a ball of hooks and eyes
b) a nucleus with an electron cloud
22.** A positively charged nucleus surrounded by negatively charged electrons in well-defined orbits is the _______ model of the atom.
a) Bohr
b) Thomson
c) Rutherford
d) Dalton
a) Bohr
23.** What are the fundamental particles of an atom?
a) Quark positron negatron
b) Nucleon electron proton
c) Proton neutron quark
d) Proton electron neutron
d) Proton electron neutron
24.** The chemical element is determined by the number of ____in the atom.
a) protons
b) electrons
c) neutrons
d) nucleons
a) protons
25.** An atom in a normal state has an electrical charge of _____.
a) one
b) zero
c) positive
d) negative
b) zero
26.** The binding energies or energy levels of electrons are represented by the
a) atomic numbers
b) atomic mass units
c) shells
d) quantum states
c) shells
The unit of mass most often used in atomic particles is: a) Gram b) Kilogram c) Atomic mass unit (amu) d) Joule
Atomic mass unit (amu)
Atomic mass number (A) is equal to: a) Number of protons only b) Number of neutrons only c) Number of protons + neutrons d) Number of electrons + protons
Number of protons + neutrons
The amount of energy required to remove an electron from an atom is called: a) Ionization energy b) Electron binding energy c) Potential energy d) Nuclear force
Electron binding energy
Which electron has the strongest binding energy? a) K-shell electron b) L-shell electron c) M-shell electron d) Valence electron
K-shell electron
Which force tends to pull electrons back toward the nucleus? a) Centrifugal force b) Electrostatic attraction c) Gravitational force d) Magnetic force
Electrostatic attraction
The smallest particle of an element that retains its chemical properties is: a) Neutron b) Atom c) Proton d) Molecule
Atom
Two or more atoms chemically united form a: a) Substance b) Molecule c) Proton d) Mixture
Molecule
A substance with definite and constant composition is called: a) Mixture b) Compound c) Element d) Substance
Substance
An isotope differs from other atoms of the same element by having a different number of: a) Protons b) Electrons c) Neutrons d) Shells
Neutrons
An atom that gains an electron becomes a: a) Positive ion b) Negative ion c) Isotope d) Proton
Negative ion
The horizontal rows of the periodic table are called: a) Groups b) Families c) Periods d) Columns
Periods
The vertical columns of the periodic table are called: a) Periods b) Rows c) Groups d) Shells
Groups
Elements with 8 electrons in their outer shell are: a) Chemically unstable b) Inert and stable c) Radioactive d) Polyenergetic
Inert and stable
The maximum number of electrons per shell can be determined by: a) 2n² b) 8n c) n³ d) Z + A
2n²
The ability to do work is defined as: a) Mass b) Energy c) Force d) Motion
Energy
The unit of energy is the: a) Volt b) Joule c) Watt d) Electron volt
Joule
Radiation is defined as: a) Energy stored in a nucleus b) Energy emitted and transferred through matter c) Vibrations in a medium d) Force × distance
Energy emitted and transferred through matter
Which form of energy results from movement of electrons? a) Heat b) Nuclear c) Electrical d) Mechanical
Electrical
Which form of energy results from electric and magnetic disturbances in space? a) Nuclear b) Chemical c) Electromagnetic d) Mechanical
Electromagnetic
X-rays are produced from: a) Radioactive decay b) X-ray tubes c) Gamma emission d) Thermal vibration
X-ray tubes
The distance between two successive crests or troughs of a wave is called: a) Frequency b) Amplitude c) Wavelength (λ) d) Velocity
Wavelength (λ)
The number of waves that pass a given point per second is called: a) Wavelength
b) Frequency
c) Amplitude
d) Velocity
Frequency
The maximum height of a wave from rest is its:
a) Amplitude
b) Frequency
c) Velocity
d) Quantum
Amplitude
The relationship between wavelength and frequency is:
a) Directly proportional
b) Inversely proportional
c) Unrelated
d) Constant
Inversely proportional
The formula that relates wavelength- frequency- and velocity is:
a) c = f × λ
b) E = mc²
c) W = F × d
d) 2n²
c = f × λ
A photon is described as: a) A particle with mass b) A quantum of electromagnetic energy c) A proton in motion d) A neutron orbit
A quantum of electromagnetic energy
The energy of a photon is directly proportional to its: a) Amplitude b) Wavelength c) Frequency d) Velocity
Frequency
Which of the following is NOT a photon property? a) Frequency b) Wavelength c) Mass d) Amplitude
Mass
The unit used to measure electron binding energy is: a) Joule b) Volt c) Electron volt (eV) d) Watt
Electron volt (eV)
One kilo-electron volt (keV) is equal to: a) 10 eV b) 100 eV c) 1000 eV d) 10000 eV
1,000 eV