Pre quiz PH scale & Compounds/mixtures

The pH scale is a range from:

• 1-7
• 0-14
• 1-14
• 1-20

What is an element?

• A substance that is made up of one type of atom and can't be reduced to simpler substances.

• A substance made of two or more different atoms chemically bonded to one another. They can only be destroyed by chemical processes.

• A material containing two or more elements or compounds that are in close contact and are mixed in any proportion. They can be separated by physical means.

Tags

NGSS.MS-PS1-1

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

• Acid
• Alkaline
• Base
• Buffer

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

• Milk
• Orange Juice
• Water
• Blood

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

• Base
• Acid
• Buffer
• Water

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

• Acid
• Base
• Neutral
• Acid and Base

Which is most acidic?

• Baking Soda
• Lemon Juice
• Black Coffee
• Milk

Tastes Sour

• Acids
• Bases
• Salts
• All

Chalk - CaCO₃

• Element

• Compound

• Homogeneous Mixture

• Heterogeneous Mixture

Tags

NGSS.MS-PS1-1

Tastes bitter.

• Acids
• Bases
• Salts
• All