WorksheetsUnit 3 Part 3 Notes 1: Properties and Definitions of Acids/Bases
Total questions: 22
Worksheet time: 17mins
Which of the following are acids? MORE THAN ONE ANSWER APPLIES.
soap
baking soda
orange juice
pure water
vinegar
Ammonia is found in many household products, including window cleaner. What would be a possible pH of ammonia?
7
10
3
What is another name for basic?
Phenolphthalein
A substance is found to have the following characteristics:
Very bitter taste
Feels slippery to the touch
Produces OH- ions when dissolved in water
In what category would the substance be classified?
acid
base
neutral
Which of these pH values represent an acid?
4
8
10
12
Milk is a very weak acid. What might its pH value be?
6.5
7.8
4.2
12.2
Which of the following are properties of acids?
They conduct electricity when dissolved in water
They taste sour
They react with active metals to produce hydrogen gas
All of the answer choices are correct
Bases have many uses. They are mainly used to make
milk of magnesia
soaps
concrete (contains alkali metals compounds)
all of the answer choices
Which of the following pH values represents a base?
2.1
4.6
6.8
8.1
True or False: bases AND acids both conduct electricity.
true
false
Litmus paper changes color to ___________ in an acid.
Blue
Green
Yellow
Red
in which acid-base indicator is acid colorless and base is pink?
Methyl orange
Litmus paper
Phenolphthalein
Universal indicator
Which colors (more than one choice!) can bases turn in universal indicator?
red
orange
yellow
blue
purple
An Arrhenius acid produces _______ when it dissociates.
water particles
H+ ions
OH- ions
sulfate ions
NaOH is:
an Arrhenius base
an Arrhenius acid
neither an acid nor a base
both an acid and a base
What is the balanced dissociation equation for Ca(OH)2?
Ca(OH)2 ---> Ca2+ + 2OH-
Ca(OH)2 ---> Ca2+ + OH-
Ca(OH)2 ---> Ca2+ + H+
Ca(OH)2 ---> Ca2+ + 2H+
neutron
electron
proton
hydroxide ion
A Bronsted Lowry acid:
donates H+ to another substance
accepts H+ from another substance
produces H+
produces OH-
In the equation below, what is the Bronsted Lowry acid (donates H+)?
HCl + NH3 → Cl- + NH4+
HCl
NH3
Cl-
NH4+
Which product in the following equation is a conjugate base?
H2O + HCl → H3O+ + Cl-
H2O
HCl
H3O+
Cl-
What is the Bronsted Lowry base in the following equation?
PO4-3 + HNO3 → NO3- + HPO4-2
PO43-
HNO3
NO3-
HPO42-
What is the conjugate acid in the following equation?
PO4-3 + HNO3 → NO3- + HPO4-2
PO43-
HNO3
NO3-
HPO42-
