Bonding, Compounds, and Reactions Review

Use the word blank below match the correct term with the correct phrase.

Binary CompoundIonic Bond

Chemical BondMolecule

Chemical FormulaNonpolar Molecule

Covalent BondOxidation Number

IonPolar Molecule

Polyatomic Ion

  1. a charged group of covalently bonded atomspolyatomic ion
  2. a compound composed of two elementsbinary compound
  3. a molecule with partially charged areaspolar molecule
  4. a positively or negatively charged particleion
  5. a chemical bond between oppositely charged ionsionic bond
  6. a bond formed from shared electronscovalent bond
  7. shows an element’s combining abilityoxidation number
  8. tells which elements are in a compound and their ratioschemical formula

For each set of vocabulary words below, explain their relationship that exists.

  1. coefficient --- balanced chemical equation

Coefficients are whole numbers used in front of chemical formulas to balance chemical equations.

  1. synthesis reaction --- decomposition reaction

They are opposite processes. Synthesis reactions - substances are put together. Decomposition reactions - substances are broken down.

  1. reactant --- product

Reactants change into products.

  1. chemical reaction --- product

Chemical reactions form new products.

  1. single-displacement reaction --- double-displacement reaction

In a single-disp. reaction only one element is replaced by another. In double-disp. reaction the ions of two compounds change places.

Answer the following questions.

  1. Which elements are least likely to react with other elements?

Noble Gases

  1. What is the name of CuO? Copper (II) oxide
  1. How many electrons are in the outer energy level of Group 17 elements? 7
  1. Which of the following is a binary ionic compound?
  2. O2
  3. NaF
  4. H2SO4
  5. Cu(NO3)2
  1. What is the charge of an atom if it has gained 3 electrons? -3
  1. Which of these is an example of a covalent compound?
  2. Sodium chloride
  3. Calcium fluoride
  4. Calcium chloride
  5. Sulfur dioxide
  1. Oxygen gas is always written as O2 in chemical equations. What term is used to describe the “2” is this formula? subscript
  1. How do you indicate that a substance in an equation is a solid? (s)
  1. What term is used to describe the “4” in the expression 4 Ca(NO3)2?

coefficient

  1. How do you show that a substance is dissolved in water when writing an equation? (aq)