LESSON 1

Student ObjectiveWednesday, April 19, 2023

Students will be able to… classify matter into mixtures and

pure substances. define the term “mixture”. identify examples of mixtures. identify methods for separating

mixtures.

Mixtures are two or more substances that are not chemically combined and they can be physically separated. **Add this word to your science notebook.

Which of the substances below are “mixtures”? sand, soil, chicken soup, pizza, chocolatechip cookies, salt water

All of the substances are mixtures!!

In a mixture ….

*Each substance in the mixture keeps its individual properties.

*The substances can be separated by physical means.

Think about why they are mixtures??EXAMPLES OF MIXTURES

ROCK-mixture of

different kinds of

rocks

SODA- mixture of

sugar and water

SANDWICH- mixture

of bread, meat, tomato

Activity 1

Internet Activity: Mixtures, Substances, Elements, and Compounds

Introduction to Internet Activity

Let’s pretend we have an extremely powerful microscope that can allow us to see the atoms of various things.

The following website should allow us to see the differences in elements, compounds, and mixtures.

Internet Activity

Click the link below: Then, close the website (x out) and

come back to the PowerPoint when you have finished the activity.

Mixtures, Compounds, Elements Website

There are 2 types of mixtures?

Heterogeneous mixtures

Heterogeneous mixtures are mixtures that do not appear to be the same throughout. There are particles that are large enough to be seen

they can be separated from the mixture. The individual substances may be in a different

phase (state of matter).

Examples: Concrete Beach sand is heterogeneous since you can see

different colored particles Vinegar and oil salad dressing is heterogeneous

since two liquid layers are present, as well as solids.

Homogeneous mixtures

Homogenous mixtures appear to be the same throughout. There are not particles floating around that you can see. The individual substances are found in the

same phase (state of matter).

Examples: Corn oil White vinegar A sugar solution A salt solution

Separating Mixtures: How would you separate the mixtures below?

Beach sandVinegar and oil salad dressing A sugar solution

There are several methods of separating mixtures…go to the next slide and complete the activity to learn about a few separation methods.

http://activities.macmillanmh.com/science/ca/scienceinmotion/Common/SIM.html?Module=../Grade5/Chapter7-SeparatingMixtures/

Click on the link above and complete the following:

1. Watch the video and record notes in your science notebook showing the various methods of separating mixtures presented.

2. Click “Next” when finished to watch real examples of these methods in use. If you left something out of your original notes, add it now.

3. Click “Next” to complete the quiz game show.

• Put each of your group members’ names in the space for your name and select any character you like.

• Answer the six questions presented and print your results when through by clicking on the “Print” button after the last question.

4. If you didn’t get all 6 right, you may try the game again but do not print your new results (only print the original).

A mixture made of solid particles of different sizes, for example sand and gravel, can be separated by putting it through a sieve.

http://www.bbc.co.uk/schools

A mixture of water and an insoluble substance like sand can be separated by filtering.

http://www.bbc.co.uk/schools

Conclusions: In your notes, copy and answer the following questions.

Name and draw a mixture that shows separation with a sieve.

Name and draw a mixture that shows separation by filtering.

LESSON 2

Student ObjectiveWednesday, April 19, 2023

Students will be able to… classify matter into mixtures and

pure substances. define the term “mixture”. identify examples of mixtures. identify methods for separating

mixtures.

Question:

Why is a chocolate chip cookie considered a mixture?

Discuss with your group and answer in your science notebook.

Chocolate Chip Cookies

They are mixtures because they are made up of 2 different substances mixed together (cookie and chocolate chips).

The individual parts keep their original properties.

The parts can be separated easily by physical means.

Review: What is a mixture?

*A mixture is a combination of two or more substances that can be separated by physical means.

* Each substance in a mixture keeps its individual properties.

Separation Methods: Using a sieve or filter A mixture made of solid particles of different sizes, for example sand and rocks, can beseparated by putting it

through a sieve.

http://www.bbc.co.uk/schools http://www.bbc.co.uk/schools

o A mixture of water and an insoluble substance like sand can be separated by filtering.

Other Separation Methods….see the next slides.

Filtration: Used for separating a solid from a liquid

Example: Separating SAND from water.

http://www.moe.gov.sg/edumall/tl/digital_resources/chemistry8.htm

Evaporation: Used to obtain the solute from a solution

Example: For obtaining SUGAR (solute) from sugar water

Simple Distillation: Used to obtain the solvent from a solution. Simple distillation is usually used only to separate liquids whose boiling points differ greatly.

Example: For obtaining pure water (solvent) from sea water

http://www.moe.gov.sg/edumall/tl/digital_resources/chemistry8.htm

Fractional Distillation: Used to separate one liquid from a mixture of different liquids using the different boiling points to help.

Example: The distillation of a mixture of water and ethanol alcohol. Ethanol boils at 78.5 °C while water boils at 100 °C

Chromatography: Used to separate out one color from a mixture of colors

Example: For separating out the colors in black ink

Black ink

READ: Summary of methods used to separate a mixture

PROCESS What it is used for Examples

Filtration Used for separating a solid from a liquid

Separating SAND from water.

Evaporation Used to obtain the solute from a solution

For obtaining SALT (solute) from salt water

Simple distillation Used to obtain the solvent from a solution

For obtaining pure water (solvent) from sea water

Fractional distillation Used to separate one liquid from a mixture of different liquids using the different boiling points to help.

Oxygen or nitrogen is obtained from air (a mixture of different gases)

Chromatography Used to separate out one color from a mixture of colors

For separating out the colors in black ink

Activity: Separating A Salt and Water Mixture

1. Go to the site below and read about the ways to separate salt from water

2. Complete the interactive section at the bottom of the page (question 14).

http://resources.schoolscience.co.uk/ICI/11-14/materials/match3pg1.html

Brain Storm!!

How would you go about separating a mixture of salt and sand? With your group, list the procedure you would

follow in your notebook.

Check your method by comparing it to the method presented at the website below: http://www.zephyrus.co.uk/separatingm

ixtures3.html

Conclusions: Copy and answer this question in your science notebook.

Complex Mixture Separation:

How could you separate a sand, salt, iron filings and marbles mixture? Explain, using pictures or diagrams to help your answer.

YOU COMPLETED THE LESSON!

Please see Mr. Mihalyov to share what you learned and determine your next steps.