Microbiology Ch2 Quiz

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Chemistry

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Feb 20, 2024

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Part A  What type of bond is joining the two hydrogen atoms?      hydrogen          ionic          hydrophobic          covalent          hydrophilic          Part B  A(n) _____ refers to two or more atoms held together by covalent bonds.      molecule          isotope          shell          community          ion          Part C  This atom can form up to _____ single covalent bond(s).    
  2 ,      3,      4,      0,     1.   Part D  A(n) _____ bond joins these two oxygen atoms.  quadruple covalent          hydrogen          single covalent          ionic          double covalent      Learning through Art: Water Molecules and Hydrogen Bonding  
Part A  Each water molecule is joined to _____ other water molecules by ____ bonds.      four ... polar covalent          two ... polar covalent          two ... hydrogen          four ... hydrogen       
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Three ...ionic       Part B      The unequal sharing of electrons within a water molecule makes the water molecule _____.      ionic          hydrophobic          polar                       change easily from a liquid to g gaseous form                        have a low surface tension       Part C  The tendency of an atom to pull electrons toward itself is referred to as its _____.      electronegativity          polarity          tonicity          ionic potential          covalency                      Part D  In this molecule, what type of bond is found between the oxygen and hydrogens?    nonpolar covalent          ionic          polar covalent          hydrophobic          hydrophilic        Part F.  Why isn't this insect drowning? 
The insect is swimming  Surface tension  The insect is very light  It is difficult to change the temperature of water  The insect is flying just above the water surface  Part E  Which of these bonds is weakest? 
Correct answer is image D           Which of the following has the smallest mass?  neutron  proton  electron  Atom    Which of the following subatomic particles has appreciable mass and lacks
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a charge?    Electron  Element  Neutron   Proton              When water freezes, ice floats. Why?  Ice is colder than liquid water.  In ice, the water molecules are farther apart than in liquid water.  Ice is denser than liquid water.  The ice molecules are moving faster than liquid water molecules.      An atom's reactivity is determined by its _____.  electron configuration  nucleus  protons  size; smaller things are more reactive          Grapefruit juice is approximately pH 3, and tomato juice is approximately pH 4. A glass of grapefruit juice contains _____ H + as a glass of tomato juice.    Half as much  Twice as much  Ten times as much  One-tenth as much       

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Faith Academy Chemistry AWeek14 modified Chemical Bonds, Electronegativity, & Ionic Character 1105Sec2 35. The amount of electronegativity difference between the H and F is a. 1.7 b. 2.0 с. 1.9 d. 1.0 36. The electronegativity difference between C and Cl in carbon tetrachloride, CCL4 is a. 0.5 b. 0.2 c. 0.8 d. 1. 37. Metals are good conductors of heat and electricity because a. bonding electrons are free to roam among any of the atoms in the metal piece b. electrons are transferred in covalent bonds c. electrons are shared in ionic bond d. electrons are locked into a fixed location ence in
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