Pure Substances and Mixtures Quiz Review

Match each term to the correct definition.

• Pure substance

• Homogeneous mixture

• Matter

• Heterogeneous mixture

• Solution

• Matter

• Homogeneous mixture

• Pure substance

• Heterogeneous mixture

• Solution

Use the clues provided to label the following:

a

b

c

Homogeneous mixture

Heterogeneous mixture

Pure substance

A student copied down notes from their science teacher about three different types of substances. Somehow, the part of the page with the substance names got removed from the notebook. Can you help them correctly identify the substance names for the following three substances?

• Substance 1: Homogeneous mixture; Substance 2: Pure substance; Substance 3: Heterogeneous mixture

• Substance 1: Homogeneous mixture; Substance 2: Heterogeneous mixture; Substance 3: Pure substance

• Substance 1: Heterogeneous mixture; Substance 2: Pure substance; Substance 3: Homogeneous mixture

• Substance 1: Pure substance; Substance 2: Heterogeneous mixture; Substance 3: Homogeneous mixture

Students were investigating mixtures. During the investigation, they were asked to mix four different types of substances. Which experiment result would show that a heterogeneous mixture was created?

• Results 1 and 2

• Results 2 and 3

• Results 1 and 3

• Results 3 and 4

Tags

NGSS.MS-PS1-2

When panning for gold, a miner scoops up gravel, rocks, and dirt, and then washes the mixture with water, leaving the gold behind. What is one reason the gold is easily separated from the gravel, rocks, and dirt?

• The gold is easily separated because the mixture is a pure substance. This means it is easily separated by physical means.

• The gold is easily separated because the mixture is a homogeneous mixture. This means it is easily separated by physical means.

• The gold is easily separated because the mixture is a heterogeneous mixture. This means it is easily separated by physical means.

• The gold is easily separated because the mixture is a solution. This means it is easily separated by physical means.

Which of the following is NOT an example of a homogeneous mixture (solution)?

• Sodium and chlorine chemically combine to create salt.

• Water and lemonade powder are mixed to create lemonade.

• Salt is dissolved in water to create salt water.

• Milk is poured into coffee and mixed.

Which of the following is NOT a method used to determine if a substance is a mixture or a pure substance?

• Chemical separation

• Evaporation

• Straining with a sieve

• Tweezers

Which of the following properties are shared by homogeneous and heterogeneous mixtures? (Choose 2 correct answers.)

• Uniform physical appearance

• Ability to easily separate

• Composed of two or more substances

• Inability to easily separate

• Inconsistent physical appearance

Identify the type of substance described:

• Can easily be separated using physical means

• Does not have a uniform appearance

• Heterogeneous Mixture

• Element

• Compound

• Homogeneous Mixture

Identify the type of substance described: • Cannot be separated using physical means • Has a uniform appearance

• Pure Substance

• Mixture

• Solution

• Colloid