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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. An electron occupies the lowest-energy orbital that can receive it
isotopes
noble gas configuration
Aufaub principle
average atomic mass
2. A substance that is formed by a chemical change
product
mass number
nuclear force
mass
3. A short-range proton-neutron - proton-proton - or neutrorce that holds the nuclear particles together
reactant
nuclear force
electromagnetic radiation
noble gas configuration
4. Any process that results in the formation of an ion.
atomic mass unit
pure substance
line-emission spectrum
ionization
5. The emission of a continuous range of frequencies of electromagnetic radiation.
conversion factor
chemistry
continuous spectrum
intensive property
6. A property that depends on the amount of matter that is present
mixture
extensive property
weight
gas
7. The suborbitals of an atom. (S - P - D - F)
Angular Momentum Quantum Number
period
chemical change
lanthanide
8. The energy required to remove one electron from a neutral atom of an element.
mass
ionization energy
mole
orbital
9. A measure of the gravitational pull on matter
photoelectric effect
electron configuration
noble gas configuration
weight
10. A horizontal row of elements in the periodic table
hypothesis
period
family
intensive property
11. A change in which one or more substances are converted into different substances
chemical change
actinide
transition metals
theory
12. The Group 18 elements (helium - neon - argon - krypton - xenon - and radon)
law of definite proportions
family
noble gas
Heisenberg Uncertainty Principle
13. The closeness of measurements to the correct or accepted value of the quantity measured
accuracy
transition metals
mass
group
14. Atoms of the same element that have different masses
system
isotopes
theory
quantum
15. 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
law of definite proportions
chemistry
lanthanide
electromagnetic radiation
16. A reaction in which one or more substances are converted into different substances
lanthanide
intensive property
chemical reaction
derived unit
17. Number of waves that pass a given point in a specific time - usually one second.
Magnetic Quantum Number
theory
frequency
nuclear force
18. The total number of protons and neutrons in the nucleus of an isotope
Principle Quantum Number
Angular Momentum Quantum Number
mass number
Hund's rule
19. A broad generalization that explains a body of facts or phenomena
theory
solid
hypothesis
molar mass
20. A unit that is a combination of SI base units
halogens
derived unit
ground state
atom
21. An outer main energy level occupied - in most cases - by 8 electrons
noble gas configuration
excited state
ionization energy
liquid
22. The ratio of mass to volume or mass divided by volume
halogens
group
density
accuracy
23. Not having a uniform composition throughout
reactant
heterogeneous
ground state
frequency
24. Lowest energy state of an atom.
direct proportion
period
mass
ground state
25. Numbers written in the form M ×10 number greater than or equal to 1 but less than 10 and n is a whole number
homogeneous
scientific notation n where the factor M is a scientific notation
electron affinity
significant figure
26. The d-block elements are metals with typical metallic properties.
transition metals
pure substance
electromagnetic spectrum
precision
27. The state of matter in which the substance has definite volume and definite shape
scientific notation n where the factor M is a scientific notation
derived unit
solid
element
28. The number of protons in the nucleus of each atom of an element
chemical change
atomic number
atom
accuracy
29. The energy change that occurs when an electron is acquired by a neutral atom.
electron affinity
conversion factor
alkaline-earth metals
Heisenberg Uncertainty Principle
30. The mass of one mole of a pure substance
law of conservation of mass
plasma
molar mass
direct proportion
31. A negative ion.
anion
electronegativity
alkaline-earth metals
homogeneous
32. Two quantities that give a constant value when one is divided by the other
cation
isotopes
direct proportion
Angular Momentum Quantum Number
33. Two quantities that have a constant mathematical product
molar mass
alkaline-earth metals
ionization energy
inverse proportion
34. The electrons available to be lost - gained - or shared in the formation of chemical compounds.
mass number
precision
gas
valence electrons
35. Which way it spins. (up or down)
periodic law
nuclide
Spin Quantum Number
model
36. Any digit in a measurement that is known with certainty plus one final digit - which is somewhat uncertain or is estimated
electromagnetic radiation
quantity
plasma
significant figure
37. A logical approach to solving problems by observing and collecting data - formulating hypotheses - testing hypotheses - and formulating theories that are supported by data
plasma
Angular Momentum Quantum Number
scientific method
period
38. 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
intensive property
pure substance
chemical change
noble gas
39. An atom or group of bonded atoms that has a positive or negative charge.
ion
alkaline-earth metals
chemical
significant figure
40. A vertical column of the periodic table
excited state
family
ionization
transition metals
41. Anything that has mass and takes up space
system
conversion factor
matter
scientific notation n where the factor M is a scientific notation
42. State in which an atom has a higher potential energy than it has in it's ground state.
excited state
continuous spectrum
Aufaub principle
gas
43. A change in a substance that does not involve a change in the identity of the substance
alkaline-earth metals
ionization
physical change
density
44. 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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45. Narrow beam of the emitted light was shined through a prism - it was separated into four specific colors of the visible spectrum.
line-emission spectrum
quantity
direct proportion
valence electrons
46. One wave per second.
element
hertz
solid
Avogadro's number
47. The elements of group 17 of the periodic table.
continuous spectrum
halogens
photon
scientific method
48. A physical change of a substance from one state to another
change of state
conversion factor
line-emission spectrum
SI (Le Système International d'Unités
49. The state of matter in which the substance has a definite volume but an indefinite shape
liquid
scientific method
actinide
Pauli exclusion principle
50. If two or more different compounds arecomposed of the same two elements - then the ratio of the masses of the secondelement combined with a certain mass of the first element is always a ratio ofsmall whole numbers
law of multiple proportions
noble gas
mass number
Magnetic Quantum Number