ALEX Classroom Resource

  

Different Substances React Differently

  Classroom Resource Information  

Title:

Different Substances React Differently

URL:

https://www.acs.org/content/acs/en/education/resources/k-8/inquiryinaction/fifth-grade/chapter-3/different-substances-react-differently.html

Content Source:

Other
American Chemical Society
Type: Lesson/Unit Plan

Overview:

In this lesson, students will be able to explain that if they mix baking soda with two different substances in separate containers and observe different signs of chemical reactions, it must be because the two substances are different. The substances must be made from different molecules, which react differently with baking soda. Students conduct a reaction with citric acid and baking soda in a universal indicator solution. The resulting chemical reaction produces a gas, causes a color change with an indicator, and results in a decrease in temperature. Students then carry out a second reaction with calcium chloride and baking soda in the universal indicator solution. In this example, students observe the production of both a gas and a solid, a color change with the indicator, and a slight increase in temperature. Students reason that since baking soda was reacted with two different substances, it makes sense that the reactions they observed were different. Finally, students conclude that different substances have characteristic chemical reactions and that these reactions can be used to identify a substance.

Content Standard(s):
Science
SC2015 (2015)
Grade: 5
4 ) Investigate whether the mixing of two or more substances results in new substances (e.g., mixing of baking soda and vinegar resulting in the formation of a new substance, gas; mixing of sand and water resulting in no new substance being formed).


NAEP Framework
NAEP Statement::
P4.3: Matter exists in several different states; the most common states are solid, liquid, and gas. Each state of matter has unique properties. For instance, gases are easily compressed while solids and liquids are not. The shape of a solid is independent of its container; liquids and gases take the shape of their containers.

NAEP Statement::
P4.4: Some objects are composed of a single substance; others are composed of more than one substance.


Unpacked Content
Scientific And Engineering Practices:
Planning and Carrying out Investigations
Crosscutting Concepts: Cause and Effect
Disciplinary Core Idea: Matter and Its Interactions
Evidence Of Student Attainment:
Students:
  • Conduct an investigation to determine whether the mixing of two or more substances results in new substances.
Teacher Vocabulary:
  • variables
  • states of matter
  • properties of matter
  • chemical change
  • physical change
  • evidence
  • temperature
Knowledge:
Students know:
  • When two or more different substances are mixed, a new substance with different properties may be formed.
Skills:
Students are able to:
  • From a given investigation plan, describe the phenomenon under investigation, including the mixing of two or more substances.
  • Identify the purpose of the investigation.
  • Describe the evidence from data that will be collected, including quantitative and qualitative properties of the substances to be mixed and the resulting substances.
  • Collaboratively plan an investigation and describe the data to be collected, including: how quantitative and qualitative properties of the two or more substances to be mixed will be determined and measured, number of trials for the investigation, how variables will be controlled to ensure a fair test.
  • Collect necessary data.
Understanding:
Students understand that:
  • Cause and effect relationships are identified and used to explain changes like those that occur when two or more substances are mixed together.
AMSTI Resources:
AMSTI Module:
Matter and Interactions

Alabama Alternate Achievement Standards
AAS Standard:
SCI.AAS.5.4- Predict whether the mixing of two or more substances results in new substances (e.g., mixing of baking soda and vinegar resulting in the formation of a new substance, gas; mixing of sand and water resulting in no new substance being formed).


Tags: baking soda, chemical, chemical reaction, chemistry, molecule, solution, substance
License Type: Custom Permission Type
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Comments
  This resource provided by:  
Author: Stephanie Carver
Alabama State Department of Education