Ph level
Key words:
pH
Indicator
pH scale
Strong Acid
Weak Acid
Strong Base
Acidic
Base
Acid
Neutral
Alkaline
Basic
Litmus paper
Weak Base
Questions
What is an acid?
Ans: An acid is a substance that releases hydrogen ions in water (H+).
What is a base?
Ans: A base is a substance that releases hydroxide ions in water (OH-).
What is litmus paper?
Ans: Litmus paper is a special colour - changing paper.
What is pH?
ANS: pH is a number that tells us how acidic or basic substance is.
What is a weak base?
Ans: A base with a pH of just above 7.
What is Alkaline?
Ans: Alkaline substances are bases with a pH more than 7.
What is a pH scale?
Ans: The pH scale is number scale from 0-14.
What is strong acid?
Ans: A strong acid is very acidic.
Definition:
A strong acid breaks fully into hydrogen ions (H⁺) when mixed with water.
It has a very low pH (usually 0 to 2).
It reacts very strongly with metals and bases.
It can be highly corrosive.
It conducts electricity well because many ions are present.
Extra Simple Definition
A strong acid completely splits into H⁺ ions in water and is very acidic.
Fun Fact
Even though strong acids are very dangerous, your stomach actually contains a strong acid called hydrochloric acid (HCl) — and it helps you digest food!
Your stomach has a special lining that protects it, otherwise the acid would hurt your body.