Classifying Matter Lesson and Review

CLassifying matter

Main categories of Substances

​1- Pure Substances

• This is either an element or a compound.

• Elements are easy to identify-just look at the periodic table!

• Compounds are elements that are chemically bonded together.
  
  

Sodium Chloride (NaCl)
Water (H₂O)
Carbon Dioxide (CO₂)
Hydrochloric Acid (HCl)
Baking Soda (NaHCO₃₎

​Compounds

Carbon
Hydrogen
oxygen
Nitrogen
Neon

​Elements

Examples of Pure Substances:

Main Categories of Substances:

​2: Mixtures

• Heterogeneous-a mixture in which the composition is not uniform throughout the mixture.

• Homogeneous- a mixture in which the composition IS uniform throughout-the individual parts can not be identified.

Brass (solid-mixture of metals)
Salt water (liquid-salt usually doesn't settle out)
Air (gas-can't distinguish the different gases in the air)

​Homogeneous

Tossed Salad (solid- parts can be separated)
Hot Cocoa (liquid-because the cocoa will settle to the bottom)
Smog (gas-the pollution is not evenly distributed in the air)

Heterogeneous

examples of mixtures (Solids, liquids, and Gases)

Solutions: another word for Homogeneous

Solutes, Solvent, and Solution

Solute + Solvent = Solution
The solute gets dissolved in something else.
The Solvent does the job of dissolving the solute.
Examples:
Salt + Water = Salt water

Categorize

Options (20)

Water

Salt

Sugar

Carbon Dioxide

Hydrochloric Acid

Sand

Oil and Water

Salad Dressing

Granola

Trail Mix

Atmospheric Air

Salt Water

Kool-Aid

Hydrogen

Helium

Bromine

Carbon

Silver

Brass

Sweet Tea

Organize these options into the right categories

Heterogeneous Mixture

Homogeneous Mixture

Element

Compound

Labelling

Use the options to label the diagram.

Drag labels to their correct position on the image

Heterogeneous

Mixture

Gold

Sodium Bicarbonate

Element

Compound

Brass

Homogeneous

Iron filings in sand

Pure Substance

Multiple Choice

What is the substance pictured?

• A compound

• A homogeneous mixture

• A heterogeneous mixture

• An element

Multiple Choice

What is the substance in the picture?

• Heterogeneous mixture

• Homogeneous Mixture

• element

• compo

Multiple Choice

What is the image?

• An element

• A compound

• A homogeneous Mixture

• A heterogeneous mixture

Multiple Choice

What are in the picture?

• elements

• compounds

• heterogeneous mixtures

• homogeneous mixtures

Multiple Choice

Joe added salt and pepper to his mashed potatoes. He added ________

• a solution

• a heterogeneous mixture

• an element

• a compoind

Multiple Choice

Joe had a salad with Italian dressing. Joe had____.

• two elements

• one solution and one heterogeneous mixture

• two heterogeneous mixtures

• a compound and a solution

Drag and Drop

Sugar is a​

Placeholder

Water is a ​

Placeholder

Sugar water is a​

Placeholder

Drag these tiles and drop them in the correct blank above

solute.

solvent.

solution.

Multiple Choice

Joe added sugar to his tea. After stirring, he visibly noticed sugar in his glass. Which of the following may explain this?

• The glass was dirty and the sugar particles were already present.
• There was more sugar than the amount of water in the tea could dissolve.

• Joe accidentally spilled some sugar on the glass.
• The sugar particles dissolved completely in the tea.

Multiple Choice

Sarah got a ring made of pure silver. The ring is made of_____

• an element

• a compound

• a solution

• a heterogeneous mixture

Multiple Choice

Sarah had a diamond in her ring. The diamond is ______

• an element

• a compound

• a heterogeneous mixture

• a solution

Multiple Choice

Sarah cleaned her ring with vinegar and water. She cleaned it with____.

• an element

• a compound

• a solution

• a heterogeneous mixture