Science 10
Mr. Bellman
Chemistry
Ch 5 PRETEST / Review
(16 )
NAME____________________
Date______________Bk_____
1. What are the seven diatomic elements that are always paired up in basic reaction equations?
2. What pHs are acidic? ___________
what pHs are basic? ___________ what is neutral pH? ________
3. When you go from pH 4 to pH 3, are you more or less acidic? ___________
By what factor? __________
4. When you go from pH 10 to pH 8, are you more or less basic? _________
By what factor? __________
5. Using the indicator chart on the data page or on page 222 and 224, or workbook p84, answer the following questions:
a. What is the colour of the solution in the following pHs?
Indicator
solution pH
colour
Litmus
3
________
Bromothymol blue
6.5
________
Methyl red
10
________
Indigo carmine
7
________
b. The water from Okanagan Lake has the following effects on these acid-base indicators:
indigo carmine is blue
phenolphthalein is pink
bromothymol blue is blue
what is the pH of the lake? Circle the correct pH.
8
10
12
14
6. Label as acid, base, salt, or none
a. HF ____________
b. KOH _____________
c. FeBr3 ____________
e. Ca(OH)2 ___________
f. H3PO4 ___________
g. MgCl2 ______________
d. H2O ____________
7. Write the skeleton equation, predict the products and balance (use data table for common acid names!!)
a. hydrochloric acid plus sodium hydroxide produces
skeleton
balanced
b. hydrogen phosphate plus potassium hydroxide produces
skeleton
balanced
c. nitric acid reacts with zinc to produce
skeleton
balanced
8. True or False?
a. acids taste bitter?
c. acids react with metals
_____
b. only bases conduct electricity?
______
_____
d. bases can burn your skin?
______
9. A solution of a metal oxide like calcium oxide mixed with water will produce an acid or a base?
__________
10. A solution containing sodium oxide and water and phenolphthalein will be what colour?
__________
11. A solution of a non-metal oxide mixed with water will produce an acid or a base?
__________
12. A solution containing sulfur dioxide and water and litmus will be what colour?
__________
13. Label as organic or inorganic : O or I
d. CO ____
e. CH3CH3 ____
a. KOH
f. NaCl _____
b. CH3OH ____
c. K2CO3 ____
g. HCl _____
h. C2H2Cl2F2 _____
_____ 14. What colour would bromthymol blue turn in acetic acid?
A. red
B. blue
C. yellow
D. colourless
_____ 15. Which of the following substances, when dissolved in rainwater, cause acid precipitation (acid rain)?
A. alkali metals
B. metal oxides
C. non-metal oxides
D. alkaline earth metals
_____16. Which of the following compounds will conduct electricity and react with Mg metal to produce hydrogen gas?
A. sodium chloride
B. hydrochloric acid
C. calcium hydroxide D. sodium bicarbonate
17. For practice, write the formulas for the compounds in Q 16.
A. ____________________
B. ___________________
C. ___________________
D. _________________
18. a. If the carbons are black and hydrogens are white,
what is the molecular formula?
______________
b. Is the molecule on the right organic or inorganic? ______________
19.a. Is the molecule on the right organic or inorganic? ______________
b. Write out its molecular formula. ____________________
c. State one use for the molecule.
20. What ions are produced from acids?
_________________
21. What ions are produced from bases?
_________________
22. State the symbol for the following states of matter: solid _____
liquid _____
gas ______
aqueous ___
Acid Rain Article and Questions from a previous provincial exam.
Normal rainwater is naturally slightly acidic with a pH that ranges between 4.4 and 5.6.This is the result of carbon dioxide
in the air reacting to produce weak carbonic acid. Sea spray, rotting vegetation, plankton and, in some locations,
volcanoes are important natural sources of CO2 . If the pH is less than 4.4, precipitation is called acid rain. The chief
culprit in acid rain is sulfur dioxide from fossil fuel combustion. Sulfuric acid eventually forms when sulfur dioxide reacts
with rainwater.
_____
_____
_____
23. Which indicator would be used to determine if a rainwater sample is acid rain?
A. methyl orange
B. indigo carmine
C. phenolphthalein
D. bromthymol blue
24. According to the article, what is the formula of the acid responsible for acid rain?
A. H2S
B. SO2
C. H2CO3
D. H2SO4
25. The “chief culprit” in acid rain is classified as
A. a base.
B. a metal oxide.
D. a diatomic molecule.
C. a non-metal oxide.
26. Just in case you have to name a common acid, what is the common name for HBr ?