Neutralization and the pH scale Flashcards
1
Q
What are alkalis?
A
Alkalis are soluble hydroxides.
2
Q
What are bases?
A
Substances that can neutralize acids. Metal oxides and metal hydroxides are bases.
3
Q
What is neutral?
A
When a substance is neither acidic or alkaline.
4
Q
Why are acids acidic?
A
All acids release H+(aq) ions into solution when added to water.
5
Q
What makes a solution alkaline?
A
All alkalis form aqueous hydroxide ions, OH- (aq), when added to water. It is these excess OH- ions that make a solution alkaline.
6
Q
What are indicators?
A
Substances that changes color when you add them to acids or alkalis.
7
Q
What do we use the pH scale for?
A
To show how acidic or alkaline a solution is. Runs from 0 (most acidic)to 14 (most alkaline)
8
Q
What number on the pH scale is neutral?
A
7
