What are atomic orbitals - Study guides, Class notes & Summaries
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BIOL 1201: Exam 1 Questions With 100% Correct Answers
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BIOL 1201: Exam 1 Questions With 100% 
Correct Answers 
A substance that cannot be broken down into other substances by ordinary chemical procedures 
is a(n) _____. - answerelement 
Organisms are largely composed of __ elements. - answer11 
About 25 of the 92 natural elements are known to be essential to life. Which four of these 25 
elements make up approximately 96% of living matter? - answercarbon, hydrogen, nitrogen, 
and oxygen 
What determines solubility? - answer"like dissolves like" 
A...
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AQA 2023 AS CHEMISTRY 7404/2 Paper 2 Organic and Physical Chemistry questions and answers verified
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AQA 2023 AS CHEMISTRY 7404/2 Paper 2 Organic and 
Physical Chemistry questions and answers verified 
What is the equation linking mass moles and MR? 
Mass=moles * MR 
What is the definition of Ar (relative atomic mass)? 
The average mass of an atom of an element compared to the mass of one twelfth of 
carbon 12. 
What does Mr stand for? 
Relative molecular mass 
Define relative isotopic mass. 
The mass of an isotope of an element compared to the mass of one twelfth of the mass 
of carbon 12 
...
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BIOL 1201: Exam 1 Questions With 100% Correct Answers
- Exam (elaborations) • 17 pages • 2024
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BIOL 1201: Exam 1 Questions With 100% 
Correct Answers 
A substance that cannot be broken down into other substances by ordinary chemical procedures 
is a(n) _____. - answerelement 
Organisms are largely composed of __ elements. - answer11 
About 25 of the 92 natural elements are known to be essential to life. Which four of these 25 
elements make up approximately 96% of living matter? - answercarbon, hydrogen, nitrogen, 
and oxygen 
What determines solubility? - answer"like dissolves like" 
A...
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Test Bank For Organic Chemistry 9th Edition By John E. Mcmurry All Chapters 1-31 | Complete 2024/2025 | Verified.
- Exam (elaborations) • 570 pages • 2024
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Test Bank For Organic Chemistry 9th Edition By John E. Mcmurry All Chapters 1-31 | Complete 2024/2025 | Verified. Chapter 01 - Structure and Bonding 
1. Give the ground-state electron configuration for carbon (atomic number 6). 
ANSWER: 1s 
2 
2s 
2 
2px 
1 
2py 
1 
or 1s 
2 
2s 
2 
2p 
2 
POINTS: 1 
2. Give the ground-state electron configuration for fluorine (atomic number 9). 
ANSWER: 1s 
2 
2s 
2 
2px 
2 
2py 
2 
2pz 
1 
or 1s 
2 
2s 
2 
2p 
5 
POINTS: 1 
3. Give the ground-state electron co...
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NMTCB Board Prep Questions and Answers
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NMTCB Board Prep Questions and Answers 
Nuclides with the same atomic number ( the same number of protons) but a different number of 
neutrons are called: - Answer ️️ -isotopes 
Two nuclides with the same atomic mass but different atomic numbers are called: - Answer ️️ - 
isobars 
A nuclide that emits particulate or photon energy to achieve a more stable state: - Answer ️️ - 
radionuclide 
Another name for a helium ion containing two protons and two neutrons: - Answer ️️ -alpha 
...
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IB Chemistry Unit 2 SL Latest Version Rated A+
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IB Chemistry Unit 2 SL Latest Version 
 
Rated A+ 
 
Emission spectrum An emission spectrum is produced when an atom moves from a higher to 
a lower level. 
 
The line emission spectrum of hydrogen provides evidence for __________________ which 
converge at _____________ The line emission spectrum of hydrogen provides evidence for 
the existence of electrons in discrete energy levels which converge at higher energies. 
 
Continuous spectrum All the colours / wavelengths present merge smoothly in...
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Bio 103 Chapter 2 & 3 test Questions and Answers with complete solution
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The chemistry & physics of molecules that make up living organisms - Molecular Biology 
Compounds that do not have a carbon backbone - Inorganic Compounds 
A substance that cannot be broken down into simpler substances by ordinary chemical reactions - 
Element 
Each element is given a ________________. - Chemical Symbol 
These four elements make up 96% of the mass of most organisms - Oxygen, Carbon, Hydrogen, 
Nitrogen 
The smallest portion of an element that retains its chemical properties - At...
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CEM 141 Exam 3 Questions And Answers Already Graded A+
- Exam (elaborations) • 20 pages • 2023
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change of state from solid -> liquid -> gas ________ energy - requires 
energy needed to phase change from solid --> liquid --> gas comes from: - the surroundings 
when phases change from solid --> liquid --> gas, interactions are _______ between molecules - 
overcome 
change of state from gas --> liquid --> solid ______ energy - releases 
what happens to the energy from a phase change from gas --> liquid --> solid? -released to 
surroundings 
when phases change fro...
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TEST BANK FOR ORGANIC CHEMISTRY WITH BIOLOGICAL TOPICS 6th EDITION ISBN : 9781260325294 ALL CHAPTERS INCLUDED.
- Exam (elaborations) • 957 pages • 2023
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TEST BANK FOR ORGANIC 
CHEMISTRY WITH 
BIOLOGICAL TOPICS 6th 
EDITION 
ISBN : 9781260325294 ALL 
CHAPTERS INCLUDED. 
Chapter 1 
1 
MULTIPLE CHOICE QUESTIONS 
Topic: Atomic Orbitals 
1. In quantum mechanics a node (nodal surface or plane) is: 
A) a place where Ψ is negative. 
B) a place where Ψ is positive. 
C) a place where Ψ = 0. 
D) a place where Ψ 
2 
is large. 
E) a place where Ψ 
2 
is negative. 
Ans: C 
Topic: Atomic Orbitals, Molecular Orbitals 
2. When the 1s orbitals of two hydroge...
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BTEC Applied Science Unit 1 Chemistry - Distinction.
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BTEC Applied Science Unit 1 Chemistry - Distinction. How many electrons can an s subshell hold? correct answer2 
How many electrons can a p subshell hold? correct answer6 
How many electrons can a d subshell hold? correct answer10 
Which subshells are available in the first energy level? correct answers 
Which subshells are available in the second energy level? correct answers and p 
Which subshells are available in the third energy level? correct answers, p and d 
What is Hund's rule? correct ...
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