WorksheetsSure en basisse gr. 9
Total questions: 55
Worksheet time: 51mins
Name
Class
Date
1.
Acid rain can damage
a)
Drinking water sources
b)
Aquatic life
c)
Architecture/buildings
d)
All options are correct
2.
Which of these is a MAJOR cause of acid rain?
a)
spraying pesticides on crops
b)
burning fossil fuels for energy
c)
dumping sewage in river systems
d)
using uranium to generate electricity
3.
Salts that are made with hydrochloric acid are called ______________.
a)
chlorides
b)
sulfates
c)
nitrates
d)
carbonates
4.
Salts that are made with sulfuric acid are called ______________.
a)
chlorides
b)
sulfates
c)
nitrates
d)
carbonates
5.
Salts that are made with nitric acid are called ______________.
a)
chlorides
b)
sulfates
c)
nitrates
d)
carbonates
6.
acid + metal ----->
a)
salt + hydrogen
b)
salt + water + carbon dioxide
c)
salt + water
d)
salt + carbon dioxide
7.
What reactants are needed to prepare (make) lead sulfate?
a)
lead and hydrochloric acid
b)
lead and sulfuric acid
c)
lead and nitric acid
d)
lead and carbonic acid
8.
How do you know when a reaction between a metal and an acid is complete?
a)
All the metal is dissolved
b)
There is a colour change in the acid
c)
Bubbles don't form any more metal is added
d)
All the acid evaporates
9.
In a reaction between an acid and a metal gas bubbles will appear. What is that gas?
a)
oxygen
b)
hydrogen
c)
helium
d)
carbon dioxide
10.
Which of the following is a possible pH for a strong base?
a)
1
b)
8
c)
7
d)
13
11.
Which of the following is a possible pH for a strong acid?
a)
1
b)
6
c)
7
d)
13
12.
What happens when an acid and a base mix?
a)
Optimization of ions
b)
Equalization of charges
c)
Neutralisation reaction
d)
Nebular theory
13.
Acids are represented by what range on the pH scale?
a)
0-14
b)
below 7
c)
7
d)
above 7
14.
Bases are represented by what range on the pH scale?
a)
below 7
b)
7
c)
above 7
d)
0-14
15.
When found in food, acids often taste ________.
a)
Sour
b)
Bitter
c)
Salty
d)
Slippery
16.
When found in food, bases often taste _______.
a)
Sour
b)
Bitter
c)
Salty
d)
Soggy
17.
What color would blue litmus paper turn if placed in an acidic solution?
a)
purple
b)
blue
c)
any range of colors
d)
red
18.
What color would red litmus paper turn if placed in a basic solution?
a)
purple
b)
red
c)
blue
d)
any range of colors
19.
What color would red litmus paper turn if placed in a basic solution?
a)
purple
b)
red
c)
blue
d)
any range of colors
20.
Many cleaning solutions are bases. Which of the following is a common property among basic solutions?
a)
slippery feel
b)
white color
c)
salty taste
d)
sour taste
21.
The aparatus shown can be used to make a salt. What is the name of the process that uses this apparatus?
a)
chromatography
b)
titration
c)
crystallisation
d)
saltification
22.
Complete the following reaction:
Hydrochloric acid + magnesium hydroxide -->
Hydrochloric acid + magnesium hydroxide -->
a)
Magnesium chloride + water
b)
Magnesium + water
c)
Magnesium chloride + hydrogen gas
d)
Magnesium chloride + water + carbon dioxide
23.
How do you test for hydrogen gas?
a)
Glowing splint
b)
Limewater goes cloudy
c)
Squeaky pop
d)
Litmus goes blue
24.
How do you test for carbon dioxide gas?
a)
Glowing splint
b)
Limewater goes cloudy
c)
Squeaky pop
d)
Litmus goes blue
25.
Which solution would turn phenolphthalein pink?
a)
Alkali
b)
Water
c)
Acid
d)
Ethanol
26.
Which of following is not a piece of apparatus used in a titration?
a)
Burette
b)
Pipette
c)
Tap funnel
d)
Conical flask
27.
What are the characteristics of an acid?
a)
taste bitter, turns litmus paper blue, formula ends in OH
b)
taste sour, turns litmus paper red, formula begins with H
c)
caustic, turns litmus paper blue, meta
28.
What does the pH scale measure?
a)
strength of an acid or base
b)
the concentration of an acid or base
c)
the color of the acid or base
29.
If you have a base, what color will the litmus paper turn?
a)
blue
b)
red
30.
What is KOH?
a)
Acid
b)
Base
c)
Salt
d)
None of the above
31.
What is ALWAYS found on the left side of a chemical equation?
a)
reactants
b)
yield
c)
products
32.
What is ALWAYS found on the right side of a chemical equation (what you end up with)?
a)
reactants
b)
yield
c)
products
33.
What represents the correct number of atoms in this compound: (NH4)3
a)
N=1, H=12
b)
N=3, H=12
c)
N=3, H=4
d)
N=3, H=3
34.
What are the 3 types of reactions of acids?
a)
Base, Salt, Carbonate
b)
Metal, Salt, Carbonate
c)
Base, Metal, Carbonate
d)
Water, Metal Carbonate
35.
Write the following chemical reaction:
Potassium reacts with Hydrochloric acid to produce potassium chloride plus hydrogen
Potassium reacts with Hydrochloric acid to produce potassium chloride plus hydrogen
a)
2K + 2HCl → 2KCl + H2
b)
2K + HCl2 → KCl + H
c)
K + 2HCl → KCl + H2
d)
K2 + HCl→ KCl + H2
36.
What are the products when calcium carbonate reacts with sulphuric acid
a)
Calcium sulphate + water + carbon dioxide
b)
Calcium sulphate + carbon dioxide
c)
Calcium sulphate + water
d)
Calcium chloride + water + carbon dioxide
37.
Voeg die ontbrekende chemikalie in.
Litium + ............ ----> Litiumsulfaat+ waterstof
a)
Salpetersuur
b)
soutsuur
c)
swaelsuur
d)
Water
38.
Wat is die formule van die sout wat vorm wanneer sink met soutsuur reageer?
a)
ZnCl
b)
ZCl
c)
ZnCl2
d)
Zn2Cl2
39.
Which of the following is a base?
a)
orange juice
b)
water
c)
vinegar
d)
dishwashing detergent
40.
Which of the following is an acid?
a)
shampoo
b)
baking soda
c)
orange juice
d)
water
41.
3.11 When an aqueous solution of an acid reacts with a metal it produces ________
a)
salt + water
b)
salt + oxygen
c)
salt + vinegar
d)
salt + hydrogen
42.
3.11 When an aqueous solution of an acid reacts with a metal oxide it produces ________
a)
salt + water
b)
salt + oxygen
c)
salt + vinegar
d)
salt + hydrogen
43.
3.11 When an aqueous solution of an acid reacts with a metal hydroxide it produces ________
a)
salt + water
b)
salt + oxygen
c)
salt + vinegar
d)
salt + hydrogen
44.
3.11 When an aqueous solution of an acid reacts with a metal carbonate it produces ________
a)
salt + water
b)
salt + oxygen
c)
salt + water + carbon dioxide
d)
salt + hydrogen
45.
3.12 The 'squeaky pop' test is a test for_______
a)
oxygen gas
b)
hydrogen gas
c)
carbon dioxide
d)
carbon monoxide
46.
3.12 The presence of carbon dioxide will make lime water turn__________
a)
orange
b)
clear
c)
pink
d)
milky
47.
3.13 A reaction between a base and an acid is a __________ reaction
a)
acidic
b)
neutralisation
c)
naturalisation
d)
alkali
48.
3.14 Die water wat gevorm word tydens die neutralisasie reaksie word gevorm van _________. The water formed in a neutralisation reaction is made from_______
a)
waterstof en hidroksiedione
b)
waterstof en hidroksiedatome
c)
waterstof en koolstofione
d)
waterstof en koolstofatome
49.
3.17 Copper oxide + sulfuric acid will produce _________
a)
copper dioxide
b)
copper sulfate
c)
copper chloride
d)
copper nitrate
50.
3.17 Copper sulfate solution can make __________ if left to evaporate
a)
black crystals
b)
clear crystals
c)
blue crystals
d)
grey crystals
51.
Complete the following reaction:
Sulphuric acid + sodium carbonate -->
Sulphuric acid + sodium carbonate -->
a)
Carbon dioxide + water
b)
calcium carbonate + water + carbon dioxide
c)
Sodium sulphate + water + carbon dioxide
d)
Sodium chloride + water + carbon dioxide
52.
Complete the following reaction:
Hydrochloric acid + magnesium hydroxide -->
Hydrochloric acid + magnesium hydroxide -->
a)
Magnesium chloride + water
b)
Magnesium + water
c)
Magnesium chloride + hydrogen gas
d)
Magnesium chloride + water + carbon dioxide
53.
In a reaction between an acid and a metal gas bubbles will appear. What is that gas?
a)
oxygen
b)
hydrogen
c)
helium
d)
carbon dioxide
54.
In a reaction between an acid and a carbonate gas bubbles will appear. What is that gas?
a)
helium
b)
hydrogen
c)
oxygen
d)
carbon dioxide
55.
When strong bases are dissolved in water, the reaction is
a)
endothermic
b)
exothermic
100 %
