1030 Final exam 2024/2025 with 100% correct answers
Filtration
Distillation
Chromatography (paper)
Intensive Properties
Extensive Properties
Atomic Number and Mass Number
Isotopes
Mole
Avogadro's Number (NA)
Electrostatic energy
Quantized energy (Max Planck)
Heisenberg's Uncertainty Pri...
1030 Final exam 2024/2025 with 100% correct
answers
1). Filtration
Ans: Separates solid substances from liquids and solutions; based on a difference in
size.
2). Distillation
Ans: Separates a homogeneous mixture based on differences in boiling points.
3). Chromatography (paper)
Ans: Separates substances on the basis of differences in solubility in a solvent.
4). Intensive properties
Ans: Independent of the amount of substance present.
-Density, boiling point
5). Extensive properties
Ans: Dependent on the amount of substance present.
-Mass, volume.
6). Atomic number and mass number
Ans:
7). Isotopes
Ans: Atoms with identical atomic numbers but different mass numbers
8). Mole
PaperStoc.com Page 1 of 14
, Ans: : the amount of a substance that contains as many elementary entities as there
are atoms in exactly 12 g C-12
9). Avogadro's number (na)
Ans: 6.0221418 x10^23
10). Electrostatic energy
Ans: potential energy that results from the interaction of charged particle
11). Quantized energy (max planck)
Ans: Energy can be absorbed or released from atoms only in certain amounts (quanta).
12). Heisenberg's uncertainty principle
Ans: the more precisely the momentum (mu) of a particle is known, the less precisely
its position (x) is known
13). Principal quantum number (n)
Ans: designates size of the orbital (shell)
-n values are integers >0
14). Angular momentum quantum number (l)
Ans: describes the shape of the orbital (subshells)
-l values are integers ranging from 0 to n − 1 for each value of n
15). Magnetic quantum number (ml)
Ans: specifies the three-dimensional orientation of the orbital
-Values are integers ranging from -l ...0 .... l
16). Electron spin quantum number (ms)
Ans: The "spin" of an electron describes its magnetic field, which affects its energy.
-Allowed values: +1/2 and −1/2.
PaperStoc.com Page 2 of 14
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