Unit 3.1 - Lesson 4 Mixtures

Multiple Choice

Which of the following is a characteristic of a pure substance?

• It is made of only one kind of particle.

• It contains two or more types of particles mixed together.

• Its properties vary from sample to sample.

• It cannot be chemically bonded.

Labelling

Label as either an element, compound, or mixture

Drag labels to their correct position on the image

Element

Compound

Mixture

Multiple Select

Which of the following are considered pure substances?

• Diamond (C)

• Potassium Chloride (KCl)

• Pizza (pepperoni, cheese, bread, etc)

• Kool-aid (water H2O, sugar, artificial flavors, etc)

Multiple Choice

Cookies and cream ice cream would be classified as

• A homogenous mixture

• A heterogenous mixture

Multiple Choice

Air

• Heterogeneous

• Homogeneous

Open Ended

Describe how you would separate a mixture of sand and salt using the methods shown in the images.

Multiple Choice

Which physical separation technique would you use to separate iron shavings from rice?

• Magnetism

• Filtration

• Centrifugation

• Distillation

Match

Match the following!

Element with 26 protons

Compound (no Carbon)

Mixture

Molecule of an Element

Compound (with Carbon)

• Element with 26 protons

• Compound (no Carbon)

• Mixture

• Molecule of an Element

• Compound (with Carbon)

Multiple Choice

Lesson Review! What are the two major categories into which all matter can be divided?

• Pure substances and mixtures

• Elements and compounds

• Homogeneous and heterogeneous mixtures

• Solids and liquids

Multiple Choice

Lesson 4, SSA Practice #1: Madison’s lab group is given a dish that contains sand, shells, and water. How should they classify the substance they have been given?

• The substance is a compound because it contains several elements.

• The substance is a pure substance because it’s made up of various compounds.

• The solution is a heterogeneous mixture because it does not have the same uniform appearance or composition.

• The solution is a homogeneous mixture because it has the same uniform appearance and composition throughout.

Multiple Choice

Lesson 4, SSA Practice #2: Distilled water (H2O) can be made from tap water by removing dissolved minerals and various other chemicals. Classify the two types of water based on the information provided.

• Tap water is a heterogeneous mixture and distilled water is a pure substance.

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

• Tap water is a pure substance while distilled water is a homogeneous mixture.

• Tap water and distilled water contains hydrogen and oxygen, therefore they are both pure substances.