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Test your basic knowledge |
Pre - AP Chemistry
Start Test
Study First
Subjects
:
pre-ap
,
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. Lowest energy state of an atom.
mass
mole
ground state
homogeneous
2. A logical approach to solving problems by observing and collecting data - formulating hypotheses - testing hypotheses - and formulating theories that are supported by data
law of multiple proportions
electron configuration
scientific method
cation
3. The arrangement of electrons in an atom
alkaline-earth metals
significant figure
homogeneous
electron configuration
4. An element that is a poor conductor of heat and electricity
homogeneous
change of state
nonmetal
atom
5. An explanation of how phenomena occur and how data or events are related
model
chemical change
reactant
heterogeneous
6. An atom or group of bonded atoms that has a positive or negative charge.
law of conservation of mass
ion
quantum
atom
7. The electrons available to be lost - gained - or shared in the formation of chemical compounds.
valence electrons
orbital
periodic table
hypothesis
8. An outer main energy level occupied - in most cases - by 8 electrons
gas
noble gas configuration
extensive property
ion
9. A unit that is a combination of SI base units
electromagnetic spectrum
frequency
nuclide
derived unit
10. Two quantities that have a constant mathematical product
chemical reaction
inverse proportion
electronegativity
mass number
11. A change in a substance that does not involve a change in the identity of the substance
element
physical change
law of definite proportions
electromagnetic spectrum
12. Orbitals of equal energy are each occupied by one electron before any orbital is occupied by a second electron - and all electrons in singly occupied orbitals must have the same spin state.
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13. A testable statement
hypothesis
quantum
mole
physical property
14. The closeness of measurements to the correct or accepted value of the quantity measured
accuracy
Principle Quantum Number
line-emission spectrum
molar mass
15. A specific portion of matter in a given region of space that has been selected for study during an experiment or observation
system
anion
weight
scientific method
16. Having a uniform composition throughout
orbital
main-group elements
conversion factor
homogeneous
17. A ratio derived from the equality between two different units that can be used to convert from one unit to the other
law of definite proportions
scientific notation n where the factor M is a scientific notation
electromagnetic spectrum
conversion factor
18. Narrow beam of the emitted light was shined through a prism - it was separated into four specific colors of the visible spectrum.
orbital
line-emission spectrum
system
chemical
19. States that it is impossible to determine simultaneously both the position and velocity of an electron or any other particle.
period
Heisenberg Uncertainty Principle
Quantum Theory
precision
20. Numbers written in the form M ×10 number greater than or equal to 1 but less than 10 and n is a whole number
Heisenberg Uncertainty Principle
periodic law
main-group elements
scientific notation n where the factor M is a scientific notation
21. One wave per second.
line-emission spectrum
lanthanide
hertz
orbital
22. A negative ion.
anion
mass
Pauli exclusion principle
line-emission spectrum
23. A chemical compound contains the same elementsin exactly the same proportions by mass regardless of the size of the sample orthe source of the compound
mass number
noble gas
law of definite proportions
chemical change
24. The state of matter in which a substance has neither definite volume nor definite shape
molar mass
Avogadro's number
volume
gas
25. Not having a uniform composition throughout
law of conservation of mass
heterogeneous
frequency
alkaline-earth metals
26. The total amount of energy level an atom has.
weight
Principle Quantum Number
metalloid
main-group elements
27. The amount of a substance that contains as many particles as there areatoms in exactly 12 g of carbon-12
lanthanide
mole
Quantum Theory
extensive property
28. A short-range proton-neutron - proton-proton - or neutrorce that holds the nuclear particles together
excited state
cation
inverse proportion
nuclear force
29. A horizontal row of elements in the periodic table
mass number
scientific notation n where the factor M is a scientific notation
lanthanide
period
30. The total number of protons and neutrons in the nucleus of an isotope
mass number
photoelectric effect
nuclear force
theory
31. A unit of mass that is exactly 1/12 the mass of a carbon-12atom - or 1.660 540 × 10-27 kg
atomic mass unit
derived unit
quantum
excited state
32. The ratio of mass to volume or mass divided by volume
density
physical property
volume
period
33. A substance that has a fixed composition and differs from a mixture in that every sample of a given pure substance has exactly the same characteristic properties and composition
pure substance
photon
atom
precision
34. A 3D region around the nucleus that indicates the probable location of an electron.
reactant
heterogeneous
orbital
nonmetal
35. An element that is a good conductor of heat and electricity
metal
photon
noble gas
ground state
36. Something that has magnitude - size - or amount
line-emission spectrum
Principle Quantum Number
quantity
halogens
37. Atoms of the same element that have different masses
metalloid
valence electrons
isotopes
electromagnetic radiation
38. The 14 elements with the atomic numbers 90-103.
actinide
Quantum Theory
wavelength
electron configuration
39. An arrangement of the elements in order of their atomic numbers so that the elements with similar properties fall in the same column or group.
period
scientific method
periodic table
nuclide
40. Which way it spins. (up or down)
theory
Spin Quantum Number
extensive property
law of multiple proportions
41. 6.022 1367 × 1023; the number of particles in exactly onemole of a pure substance
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42. The amount of space occupied by an object
Quantum Theory
volume
physical property
conversion factor
43. Mass is neither created nor destroyed duringordinary chemical or physical reactions
physical change
compound
law of conservation of mass
mole
44. Minimum quantity of energy that can be lost or gained by an atom.
ionization energy
law of definite proportions
quantum
electromagnetic radiation
45. Two quantities that give a constant value when one is divided by the other
liquid
direct proportion
SI (Le Système International d'Unités
ion
46. The state of matter in which the substance has a definite volume but an indefinite shape
liquid
alkaline-earth metals
mixture
periodic table
47. Particle of electromagnetic radiation having zero mass and carrying a quantum of energy.
mass
photon
atom
gas
48. A measure of the amount of matter
cation
theory
mass
atomic radius
49. The number of protons in the nucleus of each atom of an element
atomic number
theory
quantity
law of definite proportions
50. The p-block elements together with the s-block elements.
Quantum Numbers
Spin Quantum Number
quantity
main-group elements