Diatomic elements - Study guides, Class notes & Summaries
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Test Bank For Foundations of College Chemistry 14th Edition Hein
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Package Title: Hein Test Bank 
Course Title: Hein 14e 
Chapter Number: 3 
 
 
Question type: Multiple Choice 
 
 
1) All matter is composed of elements. Approximately how many elements are there? 
 
a) 4 
b) 10 
c) 68 
d) 100 
 
Answer: D 
 
Difficulty: easy 
Learning Objective 1: Define an element and write the chemical symbol for an element when given its name. 
Section Reference 1: Section 3.1 
 
 
2) The smallest particle of an element that can exist is called a(n) ___. 
 
a) atom 
b) ferrul...
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Sample Chemistry Placement Exam Questions with Certified Answers
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Sample Chemistry Placement Exam 
Questions with Certified Answers 
 
Answer: Oxygen 
Aluminum forms a +3 ion. In order for the formula unit Al2X3 to be electrically neutral, the 
element X must form a -2 ion. Nonmetals in the oxygen column do this. Of these elements, only 
oxygen is a diatomic gas. 
Aluminum reacts with element X to form a compound with the formula A2X3. Element X exists 
as diatomic molecules, X2, in the gaseous state at normal temperature and pressure. Element 
X must be? 
 
A...
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Praxis II Middle School Science 5440 Latest Update Graded A+
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Praxis II Middle School Science 5440 
 
Latest Update Graded A+ 
 
"Zeroth" Law of Thermodynamics If systems 1 and 2 are both in equilibrium with 3, then 1 
and 2 are also in equilibrium with each other. 
 
1st Law of Thermodynamics Matter and energy are conserved (energy in = energy out) in a 
closed system. 
 
2 elements - liquid at room temperature Hg, Br 
 
2nd Law of Thermodynamics Entropy always increases in a closed system. Not all energy is 
transferred; some is "lost" as heat. 
 
3r...
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HESI A2 CHEMISTRY 2023- 2024 ALL 25 QUESTIONS WITH ANSWERS AND RATIONALES LATEST UPDATES 100% VERIFIED ANSWERS WITH EXPLANATION.
- Exam (elaborations) • 14 pages • 2023
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HESI A2 CHEMISTRY 2023- 
2024 ALL 25 QUESTIONS 
WITH ANSWERS AND 
RATIONALES LATEST UPDATES 100% 
VERIFIED ANSWERS WITH EXPLANATION. 
1. Which of the following substances allows for the fastest diffusion? 
A. gas 
B. solid 
C. liquid 
D. plasma 
Explanation: Diffusion is fastest through gases. The next fastest medium for diffusion is liquid, 
followed by plasma, and then solids. In chemistry, diffusion is defined as the movement of 
matter by the random motions of molecules. In a gas or...
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BIO-201 Lecture Exam 1 (2024) questions and answers.docx
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What does pathology mean? 
study of disease 
 
 
 
what is the six levels of structural organization 
chemical, cellular, tissue, organ, organ system, organism 
 
 
 
The heart is what level of structural organization? 
organ 
 
 
 
A myocyte is what level of structural organization? 
cellular 
 
 
 
Why would a myocyte be cellular? 
Because cyte= cell 
 
 
 
What does catabolism do? 
breaks down 
 
 
 
What does anabolism do? 
build up 
 
 
 
What is metabolism? 
the chemical processes that occ...
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SAMPLE CHEMISTRY PLACEMENT EXAM QUESTIONS WITH COMPLETE SOLUTIONS 100% 2023/2024
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SAMPLE CHEMISTRY PLACEMENT EXAM QUESTIONS WITH COMPLETE SOLUTIONS 100% 2023/2024 
Answer: Oxygen 
Aluminum forms a +3 ion. In order for the formula unit Al₂X₃ to be electrically neutral, the element X must form a -2 ion. Nonmetals in the oxygen column do this. Of these elements, only oxygen is a diatomic gas. 
Aluminum reacts with element X to form a compound with the formula A₂X₃. Element X exists as diatomic molecules, X₂, in the gaseous state at normal temperature and pressure. Elem...
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General Chemistry placement test Study Guide Latest Update Rated A+
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General Chemistry placement test Study 
 
Guide Latest Update Rated A+ 
 
molecule two nonmetal atoms combined form a covalent compound called a 
 
diatomic molecules H2,O2,F2 
 
Matter Anything that has mass and takes up space 
 
Element A substance that cannot be broken down into simpler substances 
 
Compound A pure substance made of two or more elements CHEMICALLY combined. 
 
Compound Can be decomposed by chemically 
 
Mixture A PHYSICAL blend of two or more components 
 
(aq) aqueous mixtu...
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HESI A2 CHEMISTRY-CHRISJAY FILES (1) (1)
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HESI A2 ENTRANCEEXAM 
FOR 
CHAMBERLAINCOLLGE 
OF NURSING 
2023 QUESTIONS WITH 
ANSWERS 
CHEMISTRY 
HESI A2 CHEMISTRY V1/V2 FILE 
1. If a Hydrogen isin a compound, what would its oxidation number be? 
+1 
2. What isthe oxidation number of any simple ion? 
+1 or -1 depending on the charge of the ion 
3. How many kilograms are in a pound? 
0. kg 
4. What is the temperature for freezing point of water in Celsius? 
0 degrees Celsius (32°F for Fahrenheit) 
5. What is the conversion of Celsius to Fah...
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General Chemistry Already Passed Exam Questions And CORRECT Answers
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What is an Ion? Atom that has lost or gained an electron 
What are the 7 diatomic elements? H2, N2, O2, F2, Cl2, Br2, I2 
What is an allotrope? Elemental molecules with different formulas i.e. O2 and O3 
What is an ionic compound? metal and nonmetal (can be polyatomic too) 
What is the difference between precision and accuracy? 
What are the three sig fig rules you need to know? 1. Zeros between nonzero digits are 
always significant 
2. Zeroes at the start of a number are never significant 
3...
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HESI A2 CHEMISTRY 2023- 2024 ALL 25 QUESTIONS WITH ANSWERS AND RATIONALES LATEST UPDATES 100% VERIFIED ANSWERS WITH EXPLANATION.
- Exam (elaborations) • 14 pages • 2023
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HESI A2 CHEMISTRY 2023- 
2024 ALL 25 QUESTIONS 
WITH ANSWERS AND 
RATIONALES LATEST UPDATES 100% 
VERIFIED ANSWERS WITH EXPLANATION. 
1. Which of the following substances allows for the fastest diffusion? 
A. gas 
B. solid 
C. liquid 
D. plasma 
Explanation: Diffusion is fastest through gases. The next fastest medium for diffusion is liquid, 
followed by plasma, and then solids. In chemistry, diffusion is defined as the movement of 
matter by the random motions of molecules. In a gas or...
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