Chemistry Test Review Questions:
Fill in the Blanks
Complete each sentence with the correct term.
1. The rows in the periodic table are called ______.
2. The columns in the periodic table are called ______.
3. Electrons move rapidly around the nucleus in regions called ______.
4. The bond that is created by the force of attraction between two oppositely charged ions is called a(n)
______.
5. Two molecules, such as oxygen, that are bonded together are called a(n) ______
Short Answer
Answer each question in the space provided.
6. Use the any method to write the formula for each compound.
(a) potassium nitride ______
(b) calcium fluoride ______
(c) lithium oxide ______
(d) barium chloride ______
7. What is the charge of the cations in the following compounds?
(a) Cu2S ______
(b) NiCl2 ______
8. Write the chemical formula for each compound.
(a) copper(II) oxide ______
(b) iron(II) sulfide ______
(c) nickel(III) bromide ______
9. Write the chemical symbol for each ion.
(a) ammonium ion ______
(b) sulfate ion ______
(c) carbonate ion ______
10 Write the chemical formula for each compound.
(a) dinitrogen monoxide ______
(b) dinitrogen pentoxide ______
(c) nitrogen dioxide ______
13. Given the following word equation:
calcium _ water → calcium hydroxide _ hydrogen gas
(a) Write the skeleton equation for this word equation.
______
(b) Balance the skeleton equation.
______
11 How many valance electrons does each atom have?
(a) oxygen ______
(b) boron ______
12 In which group of the periodic table is iodine found?
______
13 When an ionic compound is named or its formula is written, which ion is placed first, the anion or the cation?
______
14 State whether each situation results from an endothermic or exothermic reaction.
(a) a fireworks display______
(b) a cold pack staying cold in a warm place ______
(c) a match burning after it has been rubbed on a rough surface ______
15. Identify each reaction as a combination or decomposition reaction.
(a) NiCO3(s) → NiO(s) _ CO2(g)
Type of reaction: ______
(b) CaO(s) _ H2O(l) → Ca(OH)2(aq)
Type of reaction: ______
(c) Ag2CO3(s) → Ag2O(s) _ CO2(g)
Type of reaction: ______
16) Complete each single or double displacement reaction by writing the correct products.
(a) Cu(s) _ 2AgNO3(aq) → ______
(b) Ba(OH)2(aq) _ Na2SO4(aq) → ______
(c) NaOH(aq) _ HCl(aq) → ______
17. (a) What, specifically, does the pH scale describe?
______
(b) Why is it important, for safety, to know the pH of an acid or a base?
______
18. (a) What are the products of a neutralization reaction between an acid and a base?
______(b) Complete the following neutralization reaction.
NaOH(aq) _ HCl(aq) →
(c) Is this neutralization a single or double displacement reaction? ______