Ch.2 Chemistry of Life REVIEW
Quiz by Kate Downey
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48 questions
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- Q1What is the relationship between the number of protons and electrons in a neutral atom?There are twice as many protons as electrons.There are an equal number of protons and electrons.There are twice as many electrons as protons.When added together, the number of protons and electrons equals the number of neutrons.60s
- Q2A ____ is formed when two atoms share one or more pairs of electrons.ionic bondpolar bondcovalent bondhydrogen bond60s
- Q3When a solution has more hydrogen ions than hydroxide ions, it is considered ____.ionizedbasicacidicneutral60s
- Q4What type of carbohydrate is sucrose, or table sugar?polysaccharidedisaccharidecomplex carbohydratemonosaccharide60s
- Q5Which type of macromolecule provides long-term storage of energy and carbon?carbohydratesproteinsnucleic acidslipids60s
- Q6What macromolecule is shared by RNA and DNA?nucleic acidslipidsphosphatesamino acids60s
- Q7The most basic unit of an element is:protonneutronelectronatom60s
- Q8Which of the following subatomic particles carries a negative charge?electronneutronprotonnucleus60s
- Q9Which of the following atoms is a negatively charged ion?An atom that becomes stable by gaining an electronA noble gasAn atom that is stable without gaining or losing electronsAn atom that becomes stable by losing an electron60s
- Q10An ionic bond is most likely to form between:two positively charged ions.two uncharged atoms.two negatively charged ions.a negatively and a positively charged ion.60s
- Q11A covalent bond is most likely to form between:two atoms, both of which typically become stable by losing an electron.a negatively and a positively charged ion.two atoms, both of which typically become stable by gaining an electron.two salts60s
- Q12Atoms are the smallest unit of an element that retains its characteristic properties.TrueFalse60s
- Q13When water molecules have a tendency to stick together making it difficult to break the surface of water what TWO properties cause this characteristic of water?cohesion & hydrogen bondscohesion & adhesionadhesion & hydrogen bondscohesion60s
- Q14The nucleus of an atom contains protons and electrons.TrueFalse60s
- Q15Typically, nitrogen atoms are composed of seven electrons, seven protons, and seven neutrons. An isotope of nitrogen couldhave more than seven electrons and more than seven protonsbe negatively chargedhave more than seven neutronshave more than seven protons.60s