Physics

Physics, 31.07.2019 07:50, s122784

Ionic compounds form crystal structures. molecular structures. pure elements. neutral elements

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Chemistry, 22.06.2019 00:40, btcastongia

Which is a difference between molecular compounds and ionic compounds? select the correct answer below: question 5 options: molecular compounds typically form between a metal and a nonmetal, while ionic compounds typically form between nonmetals. molecular compounds result from the transfer of electrons between atoms to form ions, while ionic compounds result from the sharing of electrons between neutral atoms. molecular compounds are formed of discrete, neutral molecules, while ionic compounds are formed of large repeating arrays of opposite charges. molecular compounds have high melting points and high boiling points, while ionic

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Chemistry, 24.06.2019 06:50, AJSkullcrusher

A. circle the following formulas that represent ionic compounds. put a box around those that are covalent/molecular. no2 nacl bacl2 ch4 pbso4 h2o2 fe2o3 (nh4)2co3 ph3 2. know how to write the names and formulas for ionic compounds, covalent compounds, acids and bases. a. write the names for the following compounds: i. s4o6 iii. koh v. mg(cn)2 ii. fe3(po4)2 iv. co b. write the formulas for the following compounds: i. silicon dioxide iii. potassium fluoride v. cesium hypochlorite ii. lithium sulfite iv. tricarbon octahydride vi. iron (ii) oxide c. why do certain compounds require a roman numeral? what block of elements requires them? chapter 5: soap 3. for each example below, predict if the bonding will be ionic or covalent. i. ca with cl ii. c with h iii. carbon monoxide iv. kbr v. so2 vi. magnesium iodide 4. draw lewis dot structures for these simple compounds listed below. i. br2 ii. o2 iii. n2 iv. ch4 v. nh3 vi. h2o vii. hf

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Biology, 19.09.2019 07:50, jamaiciaw6

Which of the following is a physical change? a newspaper burns when placed in a fire. an iron chair rusts when left outside. a sample of water boils and releases gas. a plant changes carbon dioxide and water into sugar. question 3(multiple choice worth 2 points) which of these statements best describes the relationship between elements, compounds, and pure substances? pure substances can be divided into two groups: elements and compounds. compounds can be divided into two groups: pure substances and elements. elements and pure substances are two of many different types of compounds. pure substances and compounds are two of many different types of elements.

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Physics, 03.10.2019 05:50, nat8475

Science questions 1. compounds have the same properties as the elements that form them. a.true b.false 2.electrons on the outermost layer of an atom are called valence electrons. a.true b.false 3) compounds formed by sharing electrons are called compounds. a.) ionic b.) covalent c.) positive d.) negative e.) neutral 4) compounds formed by transferring electrons are called compounds a.) ionic b.) covalent c.) positive d.) negative e.) neutral 5) elements that lose electrons will have a charge. a.) ionic b.) covalent c.) positive d.) negative e.) neutral 6) elements that gain electrons will have a charge a.) ionic b.) covalent c.) positive d.) negative e.) neutral 7) hydrogen, an element, and oxygen, an element, are flammable in element form. true false 8) elements can share electrons or transfer them to another element true false 9.ionic bonds happen when electrons are given up by one atom to another true false 10) covalent bonds happen when electrons are shared by three atoms true false 11.the force that holds compounds together is electrical force. true false

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