Pure Substances and Mixtures

Front

Classify the substance: sand, shells, and water.

Back

heterogeneous mixture because it does not have the same uniform appearance or composition

Front

Which model represents a pure substance?

Back

Model 3, because it represents one type of compound.

Front

Which of the following statements correctly classifies the air we breathe? Options: The air we breathe is an element, a compound, a homogeneous mixture, a heterogeneous mixture.

Back

The air we breathe is a homogeneous mixture.

Front

Classify soda water and distilled water based on the information provided: Soda water is formed by mixing carbon dioxide (CO2) with distilled water (H2O).

Back

Soda water is a homogeneous mixture and distilled water is a pure substance.

Front

What would the outcome of a solution be if Gastric Juice and Sodium Hydroxide are mixed in a beaker?

Back

a salt solution

Front

The table below shows various solutions and their pH. Which of the above substances is considered an acid? Lye, Soda, Borax, Water

Back

Soda

Front

Which household cleaner would make the best cleaning agent based on pH levels? Options: Vinegar, Toilet Bowl Cleaner, Mild Dish Soap, Tub & Tile Cleaner.

Back

Tub & Tile Cleaner would be the best cleaner, because it has a pH of approximately 11-13.

Front

Based on the pH scale, which substance is more acidic than tomato juice? Options: Lemon juice, Baking soda, Black coffee, Milk

Back

Lemon juice

Front

What describes rice and beans combined in a bowl?

Back

heterogeneous mixture

Front

What is formed when salt is dissolved in water?

Back

solution