Go to the Quizzes Page Molecular Structure 0% 2 Created by AbuBakrShalabi Please write your name and email to receive your certificate. 1 / 20 A covalent compound is formed from ____________. nonmetal elements charged particles metal elements a metal and a nonmetal 2 / 20 What is the meaning of molecules? that some elements are molecules a group of atoms that are held together by chemical bonds and act as a unit one group of compound is ionic compounds atoms can from complex molecules that range size 3 / 20 Which of these combinations is an ionic compound made of? Cation and Cation Metal and Nonmetal Nonmetal and Nonmetal Metal and Metal 4 / 20 Which of the following is NOT a property of a metal? poor conductor of heat and electricity ductile shiny malleable 5 / 20 All the following examples are elements EXCEPT ________. helium (He) magnesium (Mg) hydrogen gas (H2) water (H2O) 6 / 20 Sugar dissolve in water because of The sugar molecules are small and light The water a strong liquid The polar water molecules attract the negative and positive areas on the polar sucrose molecules The sugar molecules are heavy 7 / 20 Water molecule is made of ................. 2 oxygen atoms and 2 hydrogen atom 2 hydrogen atoms and one oxygen atom 1 hydrogen atom and 1 oxygen atom 2 Nitrogen atoms and one oxygen atom 8 / 20 Why does oil not dissolve in water? Oil is an extended structure, and water is made of nonpolar molecules. Oil is made of nonpolar molecules, and water is made of polar molecules. Oil is an extended structure, and water is made of polar molecules. Oil is made of polar molecules, and water is made of nonpolar molecules. 9 / 20 A .................. is a characteristic of matter that can be measured without changing the type of matter. physical property chemical property physical change mechanical property 10 / 20 Diamond and graphite are made up of carbon atoms, but they have different chemical and physical properties. They differ by having different ___________. extended structures types of bonded elements type of carbon atoms physical states of matter 11 / 20 Which of the following is NOT true about an ionic compound? is formed from oppositely charged particles has extended structures is mostly soluble in water is formed from nonmetal elements 12 / 20 When two or more different elements combine chemically, a new substance forms. This new substance is called a(n) ____________. compound metal element nonmetal 13 / 20 Silicone is a metalloid used in computers and electronic chips because it is __________. a good conductor of electricity a poor conductor of electricity a semiconductor shiny 14 / 20 What are the common properties of non-metals? They are brittle They are malleable They are poor conductors of heat and electricity They are good conductors of heat and electricity 15 / 20 Which of the following has partial charges? nonpolar covalent compound element ionic compound polar covalent compound 16 / 20 Boron conducts electricity at high temperatures, but it is an insulator at room temperature. Which statements are TRUE about boron? Boron is a compound. Boron is a metal. Boron is a metalloid Boron is a nonmetal. 17 / 20 Which property of metal makes it useful for electrical wires? shiny malleable ductile has high melting point 18 / 20 What are the common properties of metals? They are good conductors of heat and electricity They are poor conductors of heat and electricity They are brittle They are malleable 19 / 20 Sugar and water are polar molecules False True 20 / 20 What does the term 'malleable' mean? The substance will break or fracture if a large force is applied (such as hammering) The substance can be drawn into wires The substance has no effect if pressed or hammered The substance can be hammered or pressed into a shape without it breaking Your score is 0% Restart quiz Go to the Quizzes Page