Welcome to the Quiz!
This quiz contains 16 questions from a mix of 1 subtopics.
We measure the acidity or alkalinity of a solution using the scale.
|
The pH scale ranges from:
0 to 7
-14 to 7
0 to 14
|
What term can be used to describe solutions with a pH of 7?
Acidic
Neutral
Alkaline
Balanced
|
What term can be used to describe solutions with a pH lower than 7?
Neutral
Alkaline
Acidic
|
What term can be used to describe solutions with a pH greater than 7?
Neutral
Alkaline
Acidic
|
What pH does stomach acid typically have?
About 12
About 7
About 2
|
Select two ways by which the pH of a solution can be measured.
Chemical indicator
Reaction with water
pH probe
Distillation
|
The pH of a solution can be measured using a type of chemical dye that changes colour, depending on the pH of the substance it's mixed with.
This chemical dye is usually referred to as:
Indicator solution
Acidity checker
pH dye
|
indicator is made up of a several different indicator solutions. This means that it undergoes a smooth colour change over a wide range of pH values.
It becomes more in colour in acidic solutions, but more bluey-purple in solutions.
|
What is the pH of pure water?
|
A pH probe electronically measures the pH of a solution.
Select two reasons why using a probe may be more reliable than using an indicator.
A probe can be used in strongly acidic solutions
Determining the colour of an indicator is subjective
A probe produces a more accurate result
|
A substance that forms an aqueous solution with a pH less than 7 is:
An ion
An acid
A base
An alkali
|
Select the ion responsible for making an alkaline pH when dissolved in solution:
OH-
H+
Na+
H2O-
|
Which of the following formulae represents nitric acid?
HCl
NaOH
HNO3
H2SO4
|
Which of the following are acids?
(Select all that apply)
NaOH
H2SO4
HNO3
HCl
CaCO3
|
Which of the following is represented by the formula CaCO3?
Carbon dioxide
Calcium carbonate
Calcium hydroxide
|