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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. The number of protons in the nucleus of each atom of an element
atomic number
law of definite proportions
heterogeneous
mixture
2. A specific portion of matter in a given region of space that has been selected for study during an experiment or observation
Hund's rule
group
system
actinide
3. A unit that is a combination of SI base units
chemical reaction
atomic number
line-emission spectrum
derived unit
4. Describes mathematically the wave properties of electrons and other very small particles.
mixture
Quantum Theory
Magnetic Quantum Number
Hund's rule
5. A characteristic that can be observed or measured without changing the identity of the substance
Aufaub principle
physical property
law of multiple proportions
precision
6. State in which an atom has a higher potential energy than it has in it's ground state.
accuracy
excited state
matter
inverse proportion
7. Specify the properties of atomic orbitals and the properties of electrons in orbitals.
Quantum Numbers
conversion factor
continuous spectrum
quantity
8. A vertical column of the periodic table
homogeneous
physical property
compound
family
9. An element that is a poor conductor of heat and electricity
electronegativity
isotopes
Pauli exclusion principle
nonmetal
10. Mass is neither created nor destroyed duringordinary chemical or physical reactions
law of conservation of mass
ionization energy
accuracy
SI (Le Système International d'Unités
11. 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
reactant
Quantum Numbers
continuous spectrum
12. An outer main energy level occupied - in most cases - by 8 electrons
noble gas configuration
derived unit
lanthanide
noble gas
13. The weighted average of the atomic masses of thenaturally occurring isotopes of an element
law of multiple proportions
average atomic mass
atom
Principle Quantum Number
14. An element that has some characteristics of metals and some characteristics of nonmetals
metalloid
percent error
electromagnetic radiation
main-group elements
15. Atoms of the same element that have different masses
line-emission spectrum
product
direct proportion
isotopes
16. The mass of one mole of a pure substance
mass number
quantum
atomic radius
molar mass
17. A testable statement
Quantum Numbers
hypothesis
chemistry
accuracy
18. One wave per second.
hertz
chemical change
mass
density
19. Not having a uniform composition throughout
quantum
Hund's rule
Aufaub principle
heterogeneous
20. 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.
mass number
percent error
periodic table
ionization energy
21. 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
alkaline-earth metals
physical property
transition metals
law of multiple proportions
22. A vertical column of the periodic table
accuracy
gas
group
wavelength
23. No two electrons in the same atom can have the same set of four quantum numbers
physical change
direct proportion
element
Pauli exclusion principle
24. Minimum quantity of energy that can be lost or gained by an atom.
law of conservation of mass
quantum
chemistry
Quantum Theory
25. Lowest energy state of an atom.
chemical change
reactant
ground state
mole
26. 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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27. A measure of the gravitational pull on matter
atom
compound
weight
mole
28. Having a uniform composition throughout
solid
homogeneous
quantum
Aufaub principle
29. A substance that reacts in a chemical change
electron configuration
frequency
reactant
molar mass
30. The state of matter in which a substance has neither definite volume nor definite shape
intensive property
gas
Spin Quantum Number
Magnetic Quantum Number
31. A form of energy that exhibits wavelike behavior as it travels through space (3.00x108 m/s)
electromagnetic radiation
plasma
average atomic mass
element
32. The smallest unit of an element that maintains the properties of that element
quantity
atom
reactant
physical property
33. A logical approach to solving problems by observing and collecting data - formulating hypotheses - testing hypotheses - and formulating theories that are supported by data
volume
precision
scientific method
frequency
34. The d-block elements are metals with typical metallic properties.
periodic table
electromagnetic radiation
electronegativity
transition metals
35. A horizontal row of elements in the periodic table
period
chemistry
significant figure
transition metals
36. An electron occupies the lowest-energy orbital that can receive it
continuous spectrum
Aufaub principle
element
system
37. The amount of a substance that contains as many particles as there areatoms in exactly 12 g of carbon-12
mole
hypothesis
liquid
isotopes
38. Two quantities that have a constant mathematical product
Angular Momentum Quantum Number
chemical property
inverse proportion
density
39. A positive ion.
law of conservation of mass
mole
atomic number
cation
40. An explanation of how phenomena occur and how data or events are related
chemical change
scientific notation n where the factor M is a scientific notation
line-emission spectrum
model
41. The closeness of measurements to the correct or accepted value of the quantity measured
accuracy
derived unit
atomic number
ionization
42. A short-range proton-neutron - proton-proton - or neutrorce that holds the nuclear particles together
molar mass
nuclear force
Quantum Numbers
liquid
43. The study of the composition - structure - and properties of matter and the changes it undergoes
chemistry
molar mass
orbital
law of definite proportions
44. The state of matter in which the substance has a definite volume but an indefinite shape
quantum
ionization
liquid
molar mass
45. The emission of a continuous range of frequencies of electromagnetic radiation.
product
chemical
continuous spectrum
liquid
46. A change in a substance that does not involve a change in the identity of the substance
liquid
period
Magnetic Quantum Number
physical change
47. Particle of electromagnetic radiation having zero mass and carrying a quantum of energy.
atomic radius
Heisenberg Uncertainty Principle
photon
pure substance
48. A negative ion.
density
SI (Le Système International d'Unités
liquid
anion
49. A measure of the amount of matter
heterogeneous
mass
chemistry
mass number
50. States that it is impossible to determine simultaneously both the position and velocity of an electron or any other particle.
chemical property
mixture
Heisenberg Uncertainty Principle
atomic radius