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5 Written Questions

5 Matching Questions

  1. Nonpolar Covalent Bonds
  2. Solute
  3. Radioactive Isotope
  4. Temperature
  5. Ion
  1. a Measures the intensity of heat.
  2. b A covalent bond in which electrons are shared equally between two atoms of similar electronegativity.
  3. c A substance that is dissolved in a solution.
  4. d An isotope whose nucleus decays spontaneously, giving off particles and energy.
  5. e An atom or group of atoms that has gained or lost one or more electrongs, thus acquiring a charge.

5 Multiple Choice Questions

  1. 2
  2. A measure of how difficult it is to stretch or break the surface of a liquid. Water has a high surface tension because of the hydrogen bonding of surface molecules.
  3. A molecule containing polar covalent bonds and having an unequal distribution of charges.
  4. Anything that occupies space and has mass.
  5. The number of protons in each atom of a particular element.

5 True/False Questions

  1. What 4 elements make up about 96% of living matter?Oxygen, carbon, hydrogen, and nitrogen.


  2. AcidA substance that increases the hydrogen ion concentration in a solution. 0 on pH scale is a strong acid.


  3. CohesionThe attraction between different kinds of molecules.


  4. Covalent BondA covalent bond between atoms that differ in electronegativity. The shared electrons are pulled closer to the more electornegative atom, making it slightly negative and the other atom slightly positive.


  5. NucleusA chemical substance that resists changes in pH by accepting hydrogen ions from or donating hydrogen ions to solutions.

    substance that minimize changes in pH.


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