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Chemistry LibreTexts

2.03 Week 2 Quiz

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    184184
  • cc_profilecc.exam.v0p1qmd_assessmenttypeExaminationqmd_scoretypePercentagecc_maxattempts1
    cc_profilecc.fib.v0p1The negatively charged particles in an atom are _.electrons100cc_profilecc.fib.v0p1Protons and neutrons are found in the _ of an atom.nucleus100cc_profilecc.fib.v0p1Sodium chloride, NaCl, is an example of a(n) _.ionic compound100cc_profilecc.fib.v0p1The attraction between oppositely charged ions results in the formation of a(n) _.ionic bond100cc_profilecc.fib.v0p1The attraction that causes water and other liquids to form drops and thin films is _.cohesion100cc_profilecc.fib.v0p1Substances with a pH less than 7 are _.acidic100cc_profilecc.fib.v0p1Substances with a pH greater than 7 are _.basic100cc_profilecc.multiple_choice.v0p1<p><span style="font-size: 16px;">Which phrase best describes atoms?</span></p>single-celled organismsmallest basic units of matterparts of a nucleuspositively charged particles2100cc_profilecc.multiple_choice.v0p1<p><span style="font-size: 16px;">Which of the following cannot be broken down by ordinary chemical means?</span></p>elementcompoundmoleculebond5100cc_profilecc.multiple_choice.v0p1<p><span style="font-size: 16px;">What is a compound?</span></p>two atoms of a single element bonded togetheratoms of different elements bonded together in certain ratiosseparate atoms of multiple elements in varying ratiosa molecule of two oxygen atoms10100cc_profilecc.multiple_choice.v0p1<p><span style="font-size: 16px;">An ion is formed when an atom gains or loses</span></p>protons.neutrons.bonds.electrons.16100cc_profilecc.multiple_choice.v0p1<p><span style="font-size: 16px;">Atoms connected by covalent bonds share</span></p>pairs of electrons.ionic compounds.carbon and oxygen.hydrogen ions.17100cc_profilecc.multiple_choice.v0p1<p><span style="font-size: 16px;">Hydrogen bonds can form between regions of polar molecules that are</span></p>nonpolar.negatively charged.oppositely charged.uncharged (neutral).23100cc_profilecc.multiple_choice.v0p1<p><span style="font-size: 16px;">The attraction among molecules of different substances is called</span></p>cohesion.adhesion.specific heat.surface tension.26100cc_profilecc.multiple_choice.v0p1<p><span style="font-size: 16px;">Why is water necessary to your body?</span></p>It prevents large changes in blood pH.It dissolves and transports substances.It dissolves nonpolar fats and oils.It forms the solutes in blood plasma.30100cc_profilecc.multiple_choice.v0p1<p><span style="font-size: 16px;">Which of the following phrases best describes a solvent?</span></p>has a high concentration of solutescan be dissolved by the solutepresent in a greater concentration than solutesusually a sugar or a protein35100cc_profilecc.multiple_choice.v0p1<p><span style="font-size: 16px;">A solution with a high concentration of H ions</span></p>shows a pH of 7.kills all organisms.has a high pH.is very acidic.40100