Focus Questions

Are all solutions made with soft-drink powder and water the same? How can you determine the relative concentrations of three mystery solutions? What is the relationship between salt solution concentration and density? Is there a limit to the amount of solute that will dissolve in a solvent?

Are all solutions the same?

All solutions are not the same. The amount of solute in water determines how concentrated a solution is. The more soft-drink powder, the darker and sweeter the drink.

How can you find relative concentrations?

Relative concentrations of solutions can be compared when the volume of water is kept constant. The more solute in the solution, the higher the concentration.

Concentration And Density

Saturation of solutions

The

Investigation Discovery Centers

During Science Investigations, we will work for 3 days rotating through Science Discovery Centers. In these centers, students will explore science vocabulary, dive deeper into the topic through scientific reading and answering questions, explore videos and other extension activities, as well as conduct a hands on Investigation with a lab partner. Check out below for all materials needed for centers.

Investigation

Predict, Experiment, Observe

Click on the slideshow below for Investigations 3.1, 3.3 and 3.4. Here you will find all the information you need to understand the investigation, including important vocabulary and key ideas. (NOTE: There are only centers for Investigation 3.1. Investigations 3.3 and 3.4 are group lessons)

3.1

3.3

3.4

Vocabulary

Discover, Learn, Challenge

Click on the slideshow below to find your vocabulary words for this Investigation. Write your words in your science journal. Be sure to label them Vocabulary and underline and highlight your words. Then, choose an activity from below to work on!

Scientific Reading

Analyze, Extend, Question

Click above to open an interactive eBook

Textbook

Read pages 28-33 Solutions Up Close and Concentrated Solutions. (You can read a textbook in class, or click on the eBook to the left) Then, answer the questions on the worksheet in your science notebook. Be sure to check both sides!

Done early?

Read about Famous Scientists in the textbook pages 38-39 or Famous Inventors pages 64-71. Then, choose one topic to write about. Think about what you learned and how can you can make connections to the scientist or inventor.

Read about Scientists in your textbook on pages 38-39.
Read about Inventors in your textbook on pages 64-71.

What do I need to complete?

Google Classroom

Welcome to Investigation 3. Check out the assignments below to make sure that all your work is complete. Most work for Science is paper and pencil and in your journal in class. A copy of the sheets you need to complete are included below.

Science Journal work for Investigation 3

Below you will find descriptions of the work from Investigation 3. All materials are in your science journal in school. Any work that is incomplete can be taken home to complete. Please be sure to return the science journal as soon as you are done, as we use it everyday in school. You can use the slideshows linked above for help completing any of the science work. If you missed an experiment, you can check the slideshows for descriptions of what took place or check with a classmate as well. On google classroom you will see a checklist of all work assigned and grades.

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Focus Questions 3.1

To begin the first science experiment, answer the focus question are all solutions made with soft-drink power and water the same?

Investigation 3.1

(Page 1) Begin the investigation by answering some basic questions about solutions, solvents, and mixtures.

Investigation 3.1

(Page 2) Record observations of both parts of the experiment, equal amounts of solvent, water and different solute, powder and the same amount of solvent, water and different amounts of solute, powder.

ns, being sure to use scientific words.

Textbook 3.1

Read pages 28-29 in the textbook and summarize the information presented in your own words. Be sure to explain what a solution is and how particles behave in solutions.

Textbook 3.2

We are not conducting Investigation 3.2, but are exploring the material presented in the textbook on pages 30-33. Be sure to read carefully and then answers the questions presented in the worksheet.

Focus Question 3.3

To begin the second science experiment, answer the focus question how can you determine the relative concentration of three mystery solutions?

ns, being sure to use scientific words.

Investigation 3.3

First, make a plan on how to determine the relative concentrations of solutions. Then, as a group we will decide on a plan and test it to see which solutions are the most concentrated. Record observations in both drawings and words.

Textbook 3.3

Read pages 34-37 in the textbook and answer the questions about air.

Focus Question 3.3

To begin the second science experiment, answer the focus question how can you determine the relative concentration of three mystery solutions?

Quantitative

Characteristics of something that can be counted or measured

Synonym – numerical
Antonym – descriptive

Qualitative

Characteristics of something that describe the features

Synonym – descriptive
Antonym – numerical

Variable

A quantity that can change or vary

Synonym – changing
Antonym – steady

Experiment

A test or procedure to support or disprove a hypothesis

Synonym – test
Antonym – thought

Data

Information gathered by observation, questioning or measurement

Synonym – facts, truth
Antonym – theory

Constant

A quantity that does not change or vary

Synonym – steady
Antonym – changing

Hypothesis

An educated guess about what will happen in an experiment

Synonym – theory
Antonym – facts, truth

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