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WorksheetsIG Chapter 7
Total questions: 50
Worksheet time: 2hrs 43mins
When the polyatomic ion in an acid ends in -ite, the root name of the polyatomic ion is followed the ending -_____.
ide
ic
ous
ite
Why do farmers add lime to soil?
It acts as a fertiliser.
It adds nitrogen to the soil.
It decreases the pH of the soil.
It increases the pH of the soil.
Which of the following is NOT an acid?
HCl
CH3COOH
C2H6
H2SO4
When magnesium ribbon is added to dilute hydrochloric acid, the followings will occur EXCEPT
Gas bubbles are given off and a "pop" sound is heard when testing with a burning splint.
The metal ribbon disolves to form a colourless solution.
The salt form is magnesium chloride.
The reaction is called neutralisation.
Which of the following metals has NO reaction with a dilute acid?
Copper
Zinc
Calcium
Iron
Which of the following gas will be formed when sodium hydrogencarbonate reacts with dilute hydrochloric acid?
Hydrogen
carbon dioxide
Oxygen
Nitrogen
Identify the correct formulae for the three common lab acids
H2SO4, HNO2, HCl
HCl, HNO3, H2SO3
H2SO4, HCl, HNO3
HNO3, HCl2, H2SO4
An alkali contains ............ ions
H+
CO32-
OH-
O2-
The best definition of an acid is
a chemical that tastes sour
a chemical that is corrosive
a chemical that donates H+ ions (a proton donor)
a chemical that donates OH- ions (a hydroxide donor)
The formulae of the salt formed when sulfuric acid reacts with aluminium hydroxide is...
Al2(SO4)3
Al3(SO4)2
AlSO4
Al2SO4
The best description of a salt is...
Substance formed on neutralisation
Formed when the hydrogen of an acid is replaced by a metal or ammonium ion
Formed when the hydrogen of an acid is replaced by a metal or NH4
Formed when an acid reacts with an alkali
What would you see if calcium metal was added to excess hydrochloric acid?
Effervescence
Effervescence and calcium dissolving
Calcium dissolving
Effervescence and a colour change
What is produced when sodium hydroxide reacts with sulfuric acid?
sodium sulfate and water
sodium sulfate and hydrogen
sodium sulfide and water
sodium sulfate and carbon dioxide
What is an aqueous solution?
only contains water
a solution in which the solvent is water
any liquid
a mixture of gases
Complete the following word equation:
Metalcarbonate + acid -->
Salt + Hydrogen
Salt + Water + Carbon Dioxide
Salt + Water
Complete the following word equation:
Metal + Acid -->
Salt + water
Salt + hydrogen
Salt + Water + Carbon dioxide
How do you remove the water to leave solid copper sulfate crystals?
Filter
Evaporate
Distill
What type of reaction produced an insoluble salt?
Neutralisation reaction
Precipitation reaction
Titration reaction
Insoluble reaction
When a soluble salt is formed from an acid and an insoluble base, how do you know when an excess of a base has been added?
When bubbles of gas appear
When the reactant all dissolves
When some of the reactant is left unreacted/undissolved
When a colour change happens
Why do you add excess of the insoluble reactant when making a soluble salt?
To make sure all the acid is used up
To separate the solid from the solution
To make sure a reaction occurs
To have the reaction happen faster
How do you separate an excess insoluble reactant from a solution?
Filtration
Precipitation
Crystalisation
Evaporation
When producing a soluble salt in a reaction between an acid and an alkali, how can you prepare dry solid crystals from the solution?
Filtration
Neutralisation
Condensation
Evaporation/crystallisation
What is the purpose of a titration when making pure salts?
To test if reactants react.
To determine the exact quantities needed for neutralisation
To calculate the concentration of the salt
To test quality of reactants.
When making an insoluble salt, why do we wash the filter paper with distilled water?
to remove insoluble impurities
to remove soluble impurities
to rinse more product through the filter paper
to make a more dilute solution
What is the colour change observed with phenolphthalein when adding acid to alkali?
pink --> colourless
blue --> red
orange --> pink
green --> yellow
Complete the word equation:
magnesium oxide + nitric acid -->
magnesium nitride + water
magnesium nitrate + oxygen
magnesium nitrate+ water
magnesium nitrate + hydrogen
AgCl
Soluble
Insoluble
BaSO4
Soluble
Insoluble
(NH4)2SO4
Soluble
Insoluble
Acids taste _________________.
sour
spicy
sweet
bitter
The image shows a PH scale. Which option indicates strong alkali?
a
b
c
d
The pH scale is a range from:
1-7
0-14
1-20
What is the substance with a neutral pH of 7?
Milk
Water
Orange Juice
Blood
Which substance is alkali?
Toothpaste
Lemon juice
Vinegar
Soft drink
What colour does litmus paper turn when added to an alkali?
Blue
Red
Green
Colourless
What happens to the pH of an acid during neutralisation?
It stays the same
It moves toward pH 1
It moves towards pH 7
It moves towards pH 14
H3PO3
Pb2(PO4)3
HClO
HNO3
HNO4
H2NO3
H2SO4
H3SO4
When the polyatomic ion in an acid ends in -ate, the root name of the polyatomic ion is followed by the ending -_____.
ide
ic
ous
ite
What is the name of the following acid or base?
HC2H3O2
acetic acid
hydroacetic acid
acetous acid
What is the name of the following acid or base?
H2CO3
carbonic acid
hydrocarbonic acid
carbonous acid
What is the name of the following acid or base?
H3P
hydrophosphoric acid
phosphoric acid
phosphorous acid
What is the name of the following acid or base?
NH4OH
ammonium hydroxide
ammonium hydroxic acid
ammonium hydroxous acid
What is the name of the following acid or base?
Be(OH)2
beryllium hydroxide
beryllium hydroxic acid
beryllium hydroxous acid
