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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 ability of a substance to undergo a change that transforms it into a different substance
physical change
chemical property
matter
valence electrons
2. A testable statement
percent error
liquid
transition metals
hypothesis
3. A vertical column of the periodic table
Pauli exclusion principle
product
chemical reaction
family
4. Numbers written in the form M ×10 number greater than or equal to 1 but less than 10 and n is a whole number
nonmetal
scientific notation n where the factor M is a scientific notation
excited state
ground state
5. A unit of mass that is exactly 1/12 the mass of a carbon-12atom - or 1.660 540 × 10-27 kg
average atomic mass
hypothesis
atomic mass unit
pure substance
6. A reaction in which one or more substances are converted into different substances
mole
chemical reaction
metal
molar mass
7. The Group 18 elements (helium - neon - argon - krypton - xenon - and radon)
periodic law
inverse proportion
noble gas
molar mass
8. Anything that has mass and takes up space
ion
matter
cation
SI (Le Système International d'Unités
9. The weighted average of the atomic masses of thenaturally occurring isotopes of an element
density
periodic law
average atomic mass
Hund's rule
10. A positive ion.
main-group elements
electron configuration
family
cation
11. A logical approach to solving problems by observing and collecting data - formulating hypotheses - testing hypotheses - and formulating theories that are supported by data
line-emission spectrum
main-group elements
scientific method
intensive property
12. The state of matter in which a substance has neither definite volume nor definite shape
gas
Quantum Theory
family
law of conservation of mass
13. The total amount of energy level an atom has.
SI (Le Système International d'Unités
Principle Quantum Number
conversion factor
metalloid
14. The elements of group 2 of the periodic table.
atomic number
valence electrons
alkaline-earth metals
chemical change
15. Any digit in a measurement that is known with certainty plus one final digit - which is somewhat uncertain or is estimated
physical property
electromagnetic radiation
significant figure
excited state
16. Two quantities that give a constant value when one is divided by the other
direct proportion
SI (Le Système International d'Unités
law of multiple proportions
scientific method
17. The amount of a substance that contains as many particles as there areatoms in exactly 12 g of carbon-12
compound
Pauli exclusion principle
mole
continuous spectrum
18. An electron occupies the lowest-energy orbital that can receive it
nonmetal
change of state
Aufaub principle
atomic mass unit
19. Mass is neither created nor destroyed duringordinary chemical or physical reactions
chemistry
reactant
law of conservation of mass
nonmetal
20. A physical change of a substance from one state to another
actinide
change of state
hypothesis
excited state
21. Distance between corresponding points on adjacent waves.
photoelectric effect
wavelength
Heisenberg Uncertainty Principle
direct proportion
22. The 14 elements with the atomic numbers 90-103.
transition metals
orbital
plasma
actinide
23. A measure of the amount of matter
atom
ground state
mass
mixture
24. The smallest unit of an element that maintains the properties of that element
physical property
atom
accuracy
isotopes
25. A specific portion of matter in a given region of space that has been selected for study during an experiment or observation
direct proportion
pure substance
law of definite proportions
system
26. 6.022 1367 × 1023; the number of particles in exactly onemole of a pure substance
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27. A measure of the gravitational pull on matter
weight
chemical
hertz
family
28. The closeness of measurements to the correct or accepted value of the quantity measured
atomic radius
accuracy
chemical reaction
periodic law
29. A change in a substance that does not involve a change in the identity of the substance
wavelength
Magnetic Quantum Number
chemical change
physical change
30. Minimum quantity of energy that can be lost or gained by an atom.
electron configuration
quantum
percent error
alkaline-earth metals
31. States that it is impossible to determine simultaneously both the position and velocity of an electron or any other particle.
chemical
homogeneous
Heisenberg Uncertainty Principle
Quantum Numbers
32. 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
electromagnetic radiation
matter
precision
pure substance
33. A unit that is a combination of SI base units
quantity
derived unit
mole
electromagnetic spectrum
34. Any substance that has a definite composition
chemical
significant figure
group
intensive property
35. The state of matter in which the substance has a definite volume but an indefinite shape
Magnetic Quantum Number
transition metals
physical property
liquid
36. The p-block elements together with the s-block elements.
noble gas configuration
main-group elements
atomic number
halogens
37. One wave per second.
hertz
nuclide
mass number
orbital
38. Combination of all the forms of electromagnetic radiation.
electromagnetic spectrum
atomic radius
density
alkali metals
39. The arrangement of electrons in an atom
electron configuration
mass
scientific method
atomic number
40. A blend of two or more kinds of matter - each of which retains its own identity and properties
liquid
Aufaub principle
homogeneous
mixture
41. The 14 elements with the atomic numbers 58-71.
molar mass
scientific method
law of definite proportions
lanthanide
42. Lowest energy state of an atom.
alkaline-earth metals
metal
ground state
extensive property
43. The general term for any isotope of any element
lanthanide
orbital
Avogadro's number
nuclide
44. The study of the composition - structure - and properties of matter and the changes it undergoes
alkali metals
anion
chemistry
electromagnetic spectrum
45. The mass of one mole of a pure substance
quantity
liquid
physical change
molar mass
46. Narrow beam of the emitted light was shined through a prism - it was separated into four specific colors of the visible spectrum.
wavelength
line-emission spectrum
periodic table
weight
47. The energy change that occurs when an electron is acquired by a neutral atom.
periodic law
mass number
photoelectric effect
electron affinity
48. An atom or group of bonded atoms that has a positive or negative charge.
nuclear force
Aufaub principle
cation
ion
49. The physical and chemical properties of the elements are periodic functions of their atomic numbers.
isotopes
periodic law
derived unit
Quantum Theory
50. The amount of space occupied by an object
photoelectric effect
Aufaub principle
alkaline-earth metals
volume