chapter 2 quiz

Cards (37)

  • What is not a subatomic particle?
    Molecule
  • Where are protons and neutrons located?
    Nucleus
  • What are electrons responsible for?
    Chemical bonding
  • What is equal to the atomic number of an element?
    Protons
  • What is the mass number of an atom with 8 protons and 10 neutrons?
    18
  • What does an ion gain or lose?
    Electrons
  • What type of bond forms when atoms share electrons?
    Covalent bond
  • What are water molecules held together by?
    Hydrogen bonds
  • What is not one of the 6 elements we are composed of?
    Calcium
  • What do isotopes have a varying number of?
    neutrons
  • What are atoms whose valence shells are full considered?

    Stable
  • When atoms form an ionic bond, what occurs?

    One atom completely transfers electrons to the other
  • What measures an atoms ability to attract electrons?
    Electronegativity
  • What level in the hierarchy of life is a monkey?
    Organism
  • What does the reactivity of an atom depend on?
    The number of valence electrons
  • What has negligible mass?
    Electrons
  • What is a substance with a pH of 3 considered?
    acidic
  • What is the smallest piece of an element that retains the characteristics of the element?
    Atom
  • What measures the atom's ability to attract electrons?
    Electronegativity
  • What food is not acidic?
    Milk
  • What is the primary function of the acid mantle of human skin?
    Protection from pathogens
  • What is an atom that has gained electrical charge?
    Anion
  • What occurs when electrons are shared between two atoms to complete their valence shells?
    Covalent bond
  • What type of bond would form from the transfer of an electron from one atom to another?
    Ionic bond
  • What is an atom that has gained electrons?
    Anion
  • What needs to be added to get a pH solution of 8 to have a pH of 3?
    Acid
  • What bond is created when two hydrogen atoms are bonded to a single oxygen atom?
    Hydrogen Bond
  • What is this attraction called: The slight negative charge at one end of one water molecule is attracted to the slight positive charge or another water molecule
    Hydrophillic bond
  • What is the pH scale a mathematical indicator of?
    concentration of H+ present in a solution
  • What does hydrolysis of a disaccharide result in?
    two monosaccharides
  • What is the name of the chemical reaction used to combine monomers?
    Dehydration synthesis
  • What is not considered a property of water?
    Neutral pH
  • What is the tendency of like water molecules sticking together?
    Cohesion
  • What do the lower numbers on the pH scale indicate?
    High H+, and low OH
  • What is the tendency of different molecules to attract each other?
    adhesion
  • What can donate H+ ions as needed?
    Acids
  • What is the range of the pH scale?
    0-14