REVIEW: ACID AND BASES

Given the pH number 4 and 2, which pH number is more acidic?

• 4
• 2
• Both are acidic
• none of the choices is acidic

In pH indicator, what number is considered strongly basic?

• 8
• 10
• 12
• 14

Which pH number is near neutral?

• 6.9
• 12.2
• 2.2
• 8.5

How can you classify pH number 0 in pH scale?

• weak acid
• strong acid
• weak basic
• strong basic

Which of the following samples are considered acids?

• D
• C
• B and C
• A and C

Which of the following samples are considered base?

• A
• D
• B
• A and C

Which is NOT true about sample C?

• Red litmus paper did not change because it is an aci
• Indicator turned pink which is an indication of acidity.
• Sample C is neutral based on the pH level.
• Sample C is an acid

Based on the table how can we classify sample D?

• acid
• base
• neutral
• none of the choices

Which of following examples cannot be used to indicate basicity and acidity among compounds?

• pH scale
• plant indicators
• litmus paper
• hydrogen peroxide

What color will be formed in plant indicator if the sample is a basic compound?

• red
• blue
• yellow
• pink