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Test your basic knowledge |
Pre - AP Chemistry
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Subjects
:
pre-ap
,
science
Instructions:
Answer 50 questions in 15 minutes.
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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 arrangement of the elements in order of their atomic numbers so that the elements with similar properties fall in the same column or group.
periodic table
heterogeneous
nuclide
SI (Le Système International d'Unités
2. A property that does not depend on the amount of matter present
continuous spectrum
scientific notation n where the factor M is a scientific notation
intensive property
percent error
3. Two quantities that give a constant value when one is divided by the other
weight
direct proportion
electromagnetic radiation
period
4. A high-temperature physical state of matter in which atoms lose their electrons
plasma
chemical change
Quantum Numbers
noble gas
5. A blend of two or more kinds of matter - each of which retains its own identity and properties
mass number
mixture
significant figure
physical change
6. The total number of protons and neutrons in the nucleus of an isotope
law of multiple proportions
photon
Pauli exclusion principle
mass number
7. A negative ion.
Principle Quantum Number
Magnetic Quantum Number
mixture
anion
8. 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
chemical change
law of multiple proportions
nuclide
family
9. The measurement system accepted worldwide
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10. The elements of group 2 of the periodic table.
electron affinity
chemistry
alkaline-earth metals
alkali metals
11. A value calculated by subtracting the experimental value from the accepted value - dividing the difference by the accepted value - and then multiplying by 100
law of conservation of mass
electromagnetic spectrum
inverse proportion
percent error
12. Anything that has mass and takes up space
matter
element
physical change
metal
13. 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
theory
law of definite proportions
photon
significant figure
14. A vertical column of the periodic table
Hund's rule
group
frequency
ground state
15. The energy required to remove one electron from a neutral atom of an element.
ionization energy
halogens
noble gas
nuclear force
16. The elements of group 17 of the periodic table.
periodic law
halogens
mole
ion
17. The mass of one mole of a pure substance
continuous spectrum
molar mass
mass
extensive property
18. A characteristic that can be observed or measured without changing the identity of the substance
valence electrons
electromagnetic spectrum
element
physical property
19. A positive ion.
cation
nuclear force
nonmetal
Heisenberg Uncertainty Principle
20. A substance that is made from the atoms of two or more elements that are chemically bonded
compound
alkaline-earth metals
electromagnetic spectrum
periodic law
21. The 14 elements with the atomic numbers 90-103.
system
Hund's rule
actinide
photon
22. 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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23. A logical approach to solving problems by observing and collecting data - formulating hypotheses - testing hypotheses - and formulating theories that are supported by data
scientific method
density
weight
physical change
24. A 3D region around the nucleus that indicates the probable location of an electron.
orbital
Aufaub principle
volume
transition metals
25. An electron occupies the lowest-energy orbital that can receive it
Aufaub principle
accuracy
compound
nuclear force
26. An explanation of how phenomena occur and how data or events are related
electromagnetic spectrum
electronegativity
liquid
model
27. Specify the properties of atomic orbitals and the properties of electrons in orbitals.
Quantum Numbers
direct proportion
plasma
main-group elements
28. A testable statement
model
hypothesis
Heisenberg Uncertainty Principle
actinide
29. A specific portion of matter in a given region of space that has been selected for study during an experiment or observation
atom
Magnetic Quantum Number
system
theory
30. A broad generalization that explains a body of facts or phenomena
chemical reaction
photon
compound
theory
31. Describes mathematically the wave properties of electrons and other very small particles.
quantum
pure substance
Quantum Theory
molar mass
32. The Group 18 elements (helium - neon - argon - krypton - xenon - and radon)
noble gas
photoelectric effect
intensive property
Magnetic Quantum Number
33. The closeness of measurements to the correct or accepted value of the quantity measured
volume
continuous spectrum
anion
accuracy
34. Any process that results in the formation of an ion.
mixture
ionization
nuclide
quantity
35. Combination of all the forms of electromagnetic radiation.
law of multiple proportions
electromagnetic spectrum
valence electrons
chemistry
36. The weighted average of the atomic masses of thenaturally occurring isotopes of an element
ion
nuclide
Pauli exclusion principle
average atomic mass
37. The state of matter in which a substance has neither definite volume nor definite shape
chemical change
gas
valence electrons
frequency
38. Any digit in a measurement that is known with certainty plus one final digit - which is somewhat uncertain or is estimated
metalloid
gas
significant figure
actinide
39. 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
chemical
volume
pure substance
photon
40. A form of energy that exhibits wavelike behavior as it travels through space (3.00x108 m/s)
electromagnetic radiation
main-group elements
inverse proportion
actinide
41. An element that has some characteristics of metals and some characteristics of nonmetals
scientific notation n where the factor M is a scientific notation
metalloid
theory
valence electrons
42. An atom or group of bonded atoms that has a positive or negative charge.
ion
Pauli exclusion principle
compound
weight
43. The p-block elements together with the s-block elements.
Pauli exclusion principle
halogens
main-group elements
metalloid
44. The emission of a continuous range of frequencies of electromagnetic radiation.
quantity
system
mixture
continuous spectrum
45. Something that has magnitude - size - or amount
derived unit
actinide
hertz
quantity
46. An element that is a poor conductor of heat and electricity
heterogeneous
actinide
nonmetal
mass number
47. Number of waves that pass a given point in a specific time - usually one second.
frequency
Aufaub principle
Avogadro's number
extensive property
48. Lowest energy state of an atom.
scientific notation n where the factor M is a scientific notation
orbital
ground state
photon
49. The 14 elements with the atomic numbers 58-71.
average atomic mass
lanthanide
homogeneous
wavelength
50. A vertical column of the periodic table
mass number
quantity
family
extensive property
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