Pure Substances and Mixtures test review

Front

How should Madison's lab group classify a dish containing sand, shells, and water?

Back

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

Front

Examine the models. Which model is a pure substance?

Back

Model 3 is a pure substance because it represents one type of compound.

Front

Which of the following statements correctly classifies the air we breathe?

• The air we breathe is an element because it is made of pure substances.
• The air we breathe is a compound because it is made of different pure substances.
• The air we breathe is a heterogeneous mixture because it has visibly different substances and phases.
• The air we breathe is a homogeneous mixture because it has different substances but the same appearance throughout.

Back

The air we breathe is a homogeneous mixture because it has different substances but the same appearance throughout.

Front

How should tap water and distilled water be classified?

Back

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

Front

Which substance is considered an acid? Options: Lye, Borax, Water, Lemon lime soda

Back

Lemon lime soda

Front

If Gastric Juice and Sodium Hydroxide are mixed in a beaker during a lab, what type of solution will result?

Back

a salt solution

Front

The image contains a list of common household cleaners and their pH levels. Cleaning agents are generally basic solutions. Which would make the best cleaning agent? Options: Vinegar, Mild Dish Soap, Tub & Tile Cleaner, Toilet Bowl Cleaner

Back

Tub & Tile Cleaner

Front

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

Back

Lemon juice

Front

Sebastian heats two beakers of water (100 mL and 500 mL) to 100°C and observes bubbling. What physical property does this demonstrate?

Back

This experiment provides evidence that the boiling point is a property independent of the amount of water.

Front

Why does the air that Marissa blows into each balloon take up all the space inside the balloon?

Back

The particles of air move freely, colliding with each other and the sides of the balloon.