3.1 Pure Substances and Mixtures Quick Review

Based on this table, which of the following statements is correct?

• Orange juice is more acidic than black coffee

• Stomach acid is more basic than orange juice

• Bleach is more acidic than household ammonia

• Toothpaste is more basic than household ammonia

Tags

NGSS.MS-PS1-2

Which statement below correctly describes what each of the substances is?

• Substance X and Z are mixtures and substance Y is a compound

• Substance X and Y are both compounds and substance Z is a mixture

• Substance Y is a compound and substance X and Z are both mixtures

• Substance X is a compound, substance Y is an element and substance Z is a mixture

Tags

NGSS.MS-PS1-1

Fruit Loops, pizza, and Skittles are examples of ____________________ mixtures.

• heterogeneous

• homogeneous

• pure

Identify the following substance.

• Element

• Compound

• Mixture

• Diatomic Molecule

Tags

NGSS.MS-PS1-1

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

What kind of mixture is the air we breathe?

• An element

• A compound

• Heterogeneous

• Homogeneous

What is the difference between tap water and distilled (H2O) water?

• Tap is homogeneous and distilled is pure substances

• Distilled is homogeneous and tap is pure substances

• They are the same

• They are both pure substances

When salt is dissolved in water, the resulting solution is a...

• element

• compound

• homogeneous mixture

• heterogeneous mixture