Bonding, Compounds, and Reactions Review
Use the word blank below match the correct term with the correct phrase.
Binary Compound
Chemical Bond
Chemical Formula
Covalent Bond
Ion
Polyatomic Ion
1.
2.
3.
4.
5.
6.
7.
8.
Ionic Bond
Molecule
Nonpolar Molecule
Oxidation Number
Polar Molecule
a charged group of covalently bonded atoms
polyatomic ion
a compound composed of two elements
binary compound
a molecule with partially charged areas
polar molecule
a positively or negatively charged particle
ion
a chemical bond between oppositely charged ions
ionic bond
a bond formed from shared electrons
covalent bond
shows an element’s combining ability
oxidation number
tells which elements are in a compound and their ratios chemical formula
For each set of vocabulary words below, explain their relationship that
exists.
9. coefficient --- balanced chemical equation
Coefficients are whole numbers used in front of chemical formulas to
balance chemical equations.
10. synthesis reaction --- decomposition reaction
They are opposite processes. Synthesis reactions - substances are put
together. Decomposition reactions - substances are broken down.
11. reactant --- product
Reactants change into products.
12. chemical reaction --- product
Chemical reactions form new products.
13. 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.
14. Which elements are least likely to react with other elements?
Noble Gases
15. What is the name of CuO? Copper (II) oxide
16. How many electrons are in the outer energy level of Group 17 elements?
7
17. Which of the following is a binary ionic compound?
a. O2
b. NaF
c. H2SO4
d. Cu(NO3)2
18. What is the charge of an atom if it has gained 3 electrons? -3
19. Which of these is an example of a covalent compound?
a. Sodium chloride
b. Calcium fluoride
c. Calcium chloride
d. Sulfur dioxide
20. Oxygen gas is always written as O2 in chemical equations. What term is
used to describe the “2” is this formula? subscript
21. How do you indicate that a substance in an equation is a solid? (s)
22. What term is used to describe the “4” in the expression 4 Ca(NO 3)2?
coefficient
23. How do you show that a substance is dissolved in water when writing an
equation? (aq)