CHEM 120 UNIT 2 SOLUTION MANUAL FULLY SOLVED GRADED A+ (LATEST UPDATE 2025)

CHEM 120 UNIT 2 SOLUTION MANUAL FULLY SOLVED GRADED A+ (LATEST UPDATE 2025) The correct formula for a compound between Ba and O is: - Answers BaO The correct formula for a compound between Al and P is: - Answers AlP The correct formula for a compound between Na and N is: - Answers Na3N The correct formula for a compound between Mg and O is: - Answers MgO element - Answers cannot be broken down Elements are chemically the simplest substances and hence cannot be broken down using chemical reactions. Elements can only be changed into other elements using nuclear methods. atom - Answers smallest component of an element compound - Answers two or more elements chemically combined. Ex: H20, sugar, exhaled air mixture - Answers variable, retains identity, but mixes homogeneous mixture - Answers same composition throughout ex: creamy peanut butter heterogeneous mixture - Answers different composition throughout ex: chunky peanut butter, chicken noodle soup Describe the organization of the periodic table. - Answers groups are vertical, periods are horizontal, measured by metals, transition metals, nonmetals, and metalloids State the octet rule. - Answers atoms will gain, lose, or share electrons in order to achieve 8 ionic compound - Answers metal to nonmetal TRANSITION metals named one way(using roman numerals) - Answers Cr2+ = chromium (II) ion Cr3+= chromium (III) ion naming ionic compounds - Answers listing cation name first followed by anion name BaS= barium sulfide AlF3= aluminum flouride K2S= potassium sulfide anions are - Answers negative ions, they are named by replacing the ending of the element with -ide followed by the word ion Br-1=bromide ion O2-=oxide ion S2- = sulfide ion ionic compounds page 10 - Answers covalent bonds - Answers sharing of electrons to give each atom an octet, nonmetal to nonmetal, DO NOT SIMPLIFY polyatomic ions - Answers charged particles containing 2 or more covalently bonded atoms A substance is made of small brown particles and small white particles. When poured into water, the substance separates - the brown particles sink and the white particles float. The original substance would be considered a(n) - Answers mixture An unknown substance Z can be broken down to substances X and Y by running an electric current through it. Substance Z is - Answers compound Which of the following is an example of a homogeneous mixture? - Answers salt water Which of the following elements has the symbol P? - Answers phosphorus Which of the following elements would be classified as a nonmetal? - Answers F (#9) The element in group I and period 3 is: - Answers Na (#11) Which of the following elements would be classified as an alkali metal? - Answers K (#19) Which of the following elements would be classified as a representative element? - Answers both K (#19) and Ar (#18) are representative elements Chlorine (#17) is a(n) - Answers halogen Which of the following elements would have properties similar to F (#9)? - Answers Br (#35) Mendeleev arranged his elements in the periodic table by - Answers similar chemistry in the same column How many dots are in the dot diagram for Oxygen (#8)? - Answers 6 The octet rule states that - Answers elements with 8 valence electrons are stable Which of the following elements will form a cation? - Answers Potassium (#19)