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Stephenson Chem 100 Test 3 With Correct Answers (2025)!!

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7 pages

Written in 2024/2025

Grade A+

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Chemistry 100 Exam 1 With Correct Answers (2025)!!

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8 pages

Written in 2024/2025

Grade A+

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Noble gas structure 1) The inertness of the noble gases is due to A) the unique structure of their nuclei. B) the special number of protons and neutrons. C) the bonds they form with other elements. D) the number and arrangement of their electrons. - correct answers D) the number and arrangement of their electrons. 2) A sodium ion Na+, has the same electron configuration as a(n) A) sodium atom. B) chlorine atom. C) neon atom. D) argon atom. - correct answers C) neon atom. 3) A chlo...

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22 pages

Written in 2025/2026

Grade A+

RealGrades

Which is the balanced chemical equation showing hydrogen peroxide (H2O2) decomposing into hydrogen (H2) and oxygen (O2)? - correct answers H2O2→H2+O2 Which is the balanced chemical equation for the reaction of nitrogen (N2) with oxygen (O2) to form NO? - correct answers N2+O2→2NO Which is the correct balanced equation for the complete combustion of ethane in excess oxygen? - correct answers 2C2H6+7O2→4CO2+6H2O Calculate the mass of CO2 produced by the combustion of a tank of gasol...

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5 pages

Written in 2025/2026

Grade A+

RealGrades

Electronegativity - correct answers Property of an element that indicates how strongly an atom of that element attracts electrons in a chemical bond Electronegativity - correct answers F O N Cl Valence Electron - correct answers Electron in the outermost energy level of an atom Atomic Radius - correct answers Distance between the center of the nucleus of an atom and the outermost electrons. Ionization Energy - correct answers Energy required to remove the most loosely held electron f...

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7 pages

Written in 2025/2026

Grade A+

RealGrades

The strongest interactions between molecules of ammonia ( NH3) are A) dipole-dipole. B) dispersion forces. C) hydrogen bonds. D) ionic bonds. E) polar covalent. - correct answers C) hydrogen bonds. Significant figures are important because they indicate A) the number of measurements. B) the accuracy of a measurement. C) the accuracy of the conversion factor. D) the precision of a measurement. E) the number of digits on a calculator. - correct answers D) the precision of a measur...

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14 pages

Written in 2025/2026

Grade A+

RealGrades

Which should be larger, the potassium atom, K, or the potassium ion, K+? - correct answers The potassium atom, K, with an additional shell of electrons is larger. How can you tell whether an atom within a compound takes on a positive or negative charge? - correct answers Locate the position of the atom in the periodic table. Why are ores so valuable? - correct answers Metals can be efficiently extracted from them. Atoms of metallic elements can form ionic bonds, but they are not very go...

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5 pages

Written in 2025/2026

Grade A+

RealGrades

The elements in a column of the periodic table are known as - correct answers a group Which of these elements is chemically similar to oxygen? A) Sulfur B)calcium C)iron D)nickel E)none of these - correct answers A)Sulfur bc, they are in the same group Which of the following elements are the least reactive? A) Alkali metals B) Noble gases C) Halogens D) Alkaline earth metals E) Metalloids - correct answers B) Noble gases An exothermic reaction causes the surroundings to... A) warm up B)...

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4 pages

Written in 2025/2026

Grade A+

RealGrades

The mass of the particle doesn't weigh enough to worry about. - correct answers Electron The mass of the particles is 1 a.m.u. - correct answers Proton This particle is located outside the nucleus - correct answers Electron This particle is found only in the nucleus - correct answers Proton and Neutron This particle has a charge of -1 - correct answers Electron This particle has no charge - correct answers Neutron This particle has a charge of +1 - correct answers Proton ...

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5 pages

Written in 2025/2026

Grade A+

RealGrades

chemical bonds - correct answers compounds are composed of atoms held together by ______ _______. this is the result of electrostatic attraction between atoms. 2 types: covalent and ionic ionic bonds - correct answers -an electrostatic attraction between ions of opposite charge -metal + nonmetal -metal loses electrons and the nonmetal gains electrons covalent bonds - correct answers -an electrostatic attraction between two or more atoms that are sharing electrons -nonmetal + nonmetal -...

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4 pages

Written in 2025/2026

Grade A+

RealGrades

oxyacid - correct answers an acid with a main atom, oxygen, and one or more hydrogen atom Acid - correct answers a substance that has a proton that can be removed by a water molecule when in a water solution Hydronium ion - correct answers H₃O⁺ positively charged hydrated hydrogen ion produced when an acid ionizes in water what can X (a negatively charged ion produced when the acid ionizes) be? - correct answers - may be a monatomic ion (Ex: Cl⁻) - may contain oxygen (Ex: NO₃)...

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2 pages

Written in 2025/2026

Grade A+

RealGrades

Octet rule - correct answers Atoms lose, gain, or share electrons to become a stable, noble gas 2 - correct answers How many electrons must be lost by a main group element to form a cation with a 2+ ionic charge? 82 - correct answers How many total electrons are present in the polyatomic ion, hydrogen phosphate HPO42-? Ca^2+ - correct answers What is the ion symbol for an atom with twenty protons and eighteen electrons c.) Iron and chlorine - correct answers Which of the following pa...

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2 pages

Written in 2025/2026

Grade A+

RealGrades

what happens to the KE of a moving bus as it comes to stop? - correct answers it is converted into heat an example of an endothermic process is: A.) digestion of food B.) burning of coal C.) melting of ice D.) all of the above - correct answers C in an experiment, if the initial temperature is 72.1C and the final temperature is 26.9C, what is the temperature change for this experiment? - correct answers -45.2C in which of the following is energy (heat) released? A.) evaporation of ...

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20 pages

Written in 2025/2026

Grade A+

RealGrades

Protons and Neutrons make up the? - correct answers Nucleus Masses and charges are? - correct answers Subatomic Particles Mass (kg): 1.67262 x 10^-27 Mass (amu): 1.0073 Charge: 1+ - correct answers Proton Mass (kg): 1.67493 x 10^-27 Mass (amu): 1.0087 Charge: 0 - correct answers Neutron Mass (kg): 0.00091 x 10^-27 Mass (amu): 0.00055 Charge: 1- - correct answers Electron Left side of the periodic table, makes up 75% of the periodic table - correct answers Metals Occupy up...

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7 pages

Written in 2025/2026

Grade A+

RealGrades

polar covalent bond - correct answers anything from 0.4-1.9 (arrow on polar points to highest electronegativity) polar bonds - correct answers covalent bonds with uneven distributions of electrons chemical reactions - correct answers reactants (starting substance) -> products (new substance) electronegativity - correct answers the ability of an atom to attract electrons in a covalent bond. ~greater difference in value makes it more polar ~atoms of equal electronegativity values do ...

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4 pages

Written in 2025/2026

Grade A+

RealGrades

Chem 100 Final Exam Question and answers already passed 2025/2026

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25 pages

Written in 2025/2026

Grade A+

Smartzen

Chem 100 Final Exam Question and answers already passed 2025/2026

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37 pages

Written in 2025/2026

Grade A+

LEWISSHAWN55

Chem 100 Test 1 Updated Questions And Answers The Atomic Number For Potassium Is: A. 19 B. 30.97 C. 15 D. 39.0983 - Correct Answera. 19

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14 pages

Written in 2025/2026

Grade A+

STANGRADES

Chem 100 (2025)!!

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9 items

Schoolflix

CHEM 100 Questions And Answers Latest Update (2025)!!

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3 pages

Written in 2024/2025

Grade A+

Schoolflix

CHEM 100 Final Exam With Complete Solutions (2025)!!

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51 pages

Written in 2024/2025

Grade A+

Schoolflix