Yr 9 Acids and alkalis

What colour is universal indicator in a strong alkali?

• Green
• Orange
• Purple
• Red

What colour is universal indicator in a neutral solution?

• Green
• Orange
• Purple
• Red

What colour is universal indicator in strong acid?

• Green
• Orange
• Purple
• Red

Tags

NGSS.MS-PS1-2

The pH scale is a range from:

• 1-7
• 0-14
• 1-14
• 1-20

A(n) ______ is a substance with a pH less than 7

• Acid
• Alkaline
• Base
• Buffer

A(n) _______ is a substance with a pH greater than 7.

• Base
• Acid
• Buffer
• Water

What is the only substance with a neutral pH of 7?

• Milk
• Orange Juice
• Water
• Blood

A solution with a pH of 3.6 would be...

• Acid
• Base
• Neutral
• Acid and Base

A solution with a pH of 8.6 would be...

• Acid
• Base
• Neutral
• Acid and Base

Acid + Alkali --> Salt + Water

• neutralization reaction

• synthesis

• decomposition

• single displacement