Diatomic compounds 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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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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CHEM 120 Week 5 Assignment; Topic Approval
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Week 5 Assignment: Topic Approval 
Week 8 Assignment Requirements Instructions: 
Students will work in groups of 2-3 students. Working as a group, students will pick a topic based on course outcomes (COs), research that topic for its connection to nursing/health care. Students may pick a topic from the suggested topics list or instructors may choose to assign specific topics to students. Additionally, students may choose a different topic that is relevant to the COs as long as the faculty approv...
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Chemistry Final Exam (Answered)
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Chemistry Final Exam (Answered) 
 
Oxidation Rules 
Rule 1: The oxidation number of an element in its free state = 0 (Also true for diatomic elements) 
-Mg=0,H2=0, C=0 
 
Rule 2: The oxidation number of a monatomic (one-atom) ion is the same as the charge on the ion 
-Mg^2+=+2, Na^+=+1, O^2-=-2 
 
Rule 3: The sum of all oxidation numbers in a neutral compound is zero. The sum of all oxidation numbers in a polyatomic (many-atom) ion is equal to the charge on the ion. 
 
Rule 4: The oxidation numb...
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CEM 141 MSU Final Exam All Possible Questions and Answers with complete solution
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Yes because it can be tested and answered though observations and experiments - Consider the 
question: Is there an attractive force between a pencil and the earth? 
Is this a scientific question? [Yes or No] 
Because 
III. It can be tested and answered through observations and experiments 
IV. The answer is already known and we find it online 
V. There is no way to design an experiment to answer this question. 
Atoms are mostly empty space 
Atoms are in constant motion - Which of the following ...
And that's how you make extra money
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General Chemistry placement test Study Guide 2024 Solved 100%
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Atomic Number - The number of protons in the nucleus of an atom. The atomic number of an element never changes, meaning that the number of protons in the nucleus of every atom in an element is always the same. 
Hydrogen = 1, Carbon = 6, Oxygen = 8 (located on top of element of periodic table) 
 
Mass Number - # of neurons + # of protons = mass number (located on bottom of periodic table) 
 
Isotopes - Let's say an atom is missing a neutron or has an extra neutron. That type of at...
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Chemistry Final Exam (Answered)
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Chemistry Final Exam (Answered) 
 
Oxidation Rules 
Rule 1: The oxidation number of an element in its free state = 0 (Also true for diatomic elements) 
-Mg=0,H2=0, C=0 
 
Rule 2: The oxidation number of a monatomic (one-atom) ion is the same as the charge on the ion 
-Mg^2+=+2, Na^+=+1, O^2-=-2 
 
Rule 3: The sum of all oxidation numbers in a neutral compound is zero. The sum of all oxidation numbers in a polyatomic (many-atom) ion is equal to the charge on the ion. 
 
Rule 4: The oxidation numb...
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Chemistry 130 Arizona college of nursing midterm Questions With 100% Correct Answers.
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Acidic solution - A solution in which the concentration of H3O+ is greater than the concentration 
of OH- Also, a solution in which pH is less than 7. 
Anions - negatively-charged ions (meaning they have more electrons than protons due to having 
gained one or more electrons). 
Arrhenius base - increases the concentration of OH- ions. 
Atom - An atom is the smallest unit of ordinary matter that forms a chemical element. Every solid, 
liquid, gas, and plasma is composed of neutral or ionized atom...
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Chemistry 121 Exam 1 Questions and Answers 100% Correct
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Chemistry 121 Exam 1 Questions and 
Answers 100% Correct 
What are the three states of matter? - Correct Answer ️️ -solid, liquid and gas 
___ is the study of properties and behavior of matter. - Correct Answer ️️ -chemistry 
___ is the physical material of the universe. It is also anything the has mass and 
occupies space. - Correct Answer ️️ -matter 
__ is matter that is made up of one "thing" - Correct Answer ️️ -pure substance 
__ is a mixture that doesn't have the same co...
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AAMI Intro to Chemistry Midterm Review Questions & Answers Already Passed!!
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The 5 chemical properties of matter - Answer-reactivity, combustibility, valence, combining 
requirements, stability 
The atomic mass is equal to the sum of the... - Answer-protons and neutrons 
Hydrogen has no... - Answer-neutrons 
The outer orbit (last shell) requires how many valence electrons? - Answer-8 
The 1st shell must have how many electrons to be complete? - Answer-2 
Positively charged ions - Answer-cations 
Negatively charged ions - Answer-anions 
Metals produce what type of ions? -...
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