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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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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 state of matter in which a substance has neither definite volume nor definite shape
halogens
physical change
actinide
gas
2. A ratio derived from the equality between two different units that can be used to convert from one unit to the other
ionization
hypothesis
conversion factor
alkali metals
3. The mass of one mole of a pure substance
lanthanide
molar mass
Principle Quantum Number
transition metals
4. 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
excited state
change of state
compound
law of multiple proportions
5. An atom or group of bonded atoms that has a positive or negative charge.
matter
theory
ion
molar mass
6. Having a uniform composition throughout
metal
law of multiple proportions
homogeneous
conversion factor
7. A short-range proton-neutron - proton-proton - or neutrorce that holds the nuclear particles together
mass number
nuclear force
alkaline-earth metals
isotopes
8. A pure substance made of only one kind of atom
law of multiple proportions
hertz
element
plasma
9. The suborbitals of an atom. (S - P - D - F)
Angular Momentum Quantum Number
mole
pure substance
atom
10. 1/2 the distance between the nuclei of identical atoms that are bonded together.
significant figure
element
lanthanide
atomic radius
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 multiple proportions
conversion factor
physical change
percent error
12. A specific portion of matter in a given region of space that has been selected for study during an experiment or observation
system
theory
scientific method
reactant
13. The emission of a continuous range of frequencies of electromagnetic radiation.
alkali metals
actinide
lanthanide
continuous spectrum
14. The total amount of energy level an atom has.
nonmetal
intensive property
Principle Quantum Number
accuracy
15. The elements of group 17 of the periodic table.
halogens
chemical
intensive property
Spin Quantum Number
16. A measure of the amount of matter
mass
mixture
ground state
nonmetal
17. A property that depends on the amount of matter that is present
molar mass
isotopes
extensive property
electron affinity
18. Numbers written in the form M ×10 number greater than or equal to 1 but less than 10 and n is a whole number
electron affinity
frequency
significant figure
scientific notation n where the factor M is a scientific notation
19. A substance that reacts in a chemical change
reactant
Hund's rule
electromagnetic spectrum
photon
20. Emission of electrons from a metal when light shines on a metal.
Principle Quantum Number
scientific method
photoelectric effect
Angular Momentum Quantum Number
21. The closeness of measurements to the correct or accepted value of the quantity measured
atomic number
accuracy
extensive property
ion
22. Specify the properties of atomic orbitals and the properties of electrons in orbitals.
anion
nuclear force
Quantum Numbers
metalloid
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 notation n where the factor M is a scientific notation
law of multiple proportions
accuracy
scientific method
24. A substance that is formed by a chemical change
excited state
photon
electron affinity
product
25. The measurement system accepted worldwide
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26. A unit of mass that is exactly 1/12 the mass of a carbon-12atom - or 1.660 540 × 10-27 kg
product
atomic mass unit
Principle Quantum Number
excited state
27. The amount of a substance that contains as many particles as there areatoms in exactly 12 g of carbon-12
law of multiple proportions
mole
product
ionization
28. A negative ion.
electron affinity
group
anion
mixture
29. The electrons available to be lost - gained - or shared in the formation of chemical compounds.
significant figure
system
valence electrons
Quantum Numbers
30. A reaction in which one or more substances are converted into different substances
physical change
chemical reaction
atomic mass unit
lanthanide
31. State in which an atom has a higher potential energy than it has in it's ground state.
atom
heterogeneous
excited state
photoelectric effect
32. The arrangement of electrons in an atom
product
noble gas configuration
halogens
electron configuration
33. A property that does not depend on the amount of matter present
product
orbital
atom
intensive property
34. Distance between corresponding points on adjacent waves.
chemical reaction
ion
chemical
wavelength
35. An explanation of how phenomena occur and how data or events are related
electron configuration
element
isotopes
model
36. The physical and chemical properties of the elements are periodic functions of their atomic numbers.
periodic law
element
percent error
mass
37. A characteristic that can be observed or measured without changing the identity of the substance
electromagnetic spectrum
ion
Aufaub principle
physical property
38. A physical change of a substance from one state to another
derived unit
hertz
physical property
change of state
39. A measure of the gravitational pull on matter
weight
physical property
chemical property
law of multiple proportions
40. Any substance that has a definite composition
chemical
element
physical change
photoelectric effect
41. Anything that has mass and takes up space
matter
law of conservation of mass
hypothesis
halogens
42. A testable statement
hypothesis
intensive property
product
continuous spectrum
43. The state of matter in which the substance has a definite volume but an indefinite shape
Principle Quantum Number
liquid
quantum
nonmetal
44. The closeness of a set of measurements of the same quantity made in the same way
electromagnetic spectrum
Quantum Theory
mixture
precision
45. Describes mathematically the wave properties of electrons and other very small particles.
heterogeneous
Quantum Theory
transition metals
mass number
46. A blend of two or more kinds of matter - each of which retains its own identity and properties
conversion factor
atomic radius
alkaline-earth metals
mixture
47. The number of protons in the nucleus of each atom of an element
mass number
mass
atomic number
electromagnetic radiation
48. Particle of electromagnetic radiation having zero mass and carrying a quantum of energy.
photon
Hund's rule
chemical property
SI (Le Système International d'Unités
49. The 14 elements with the atomic numbers 58-71.
isotopes
main-group elements
solid
lanthanide
50. The smallest unit of an element that maintains the properties of that element
atom
hypothesis
Quantum Theory
nuclide
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