Learning Resource Type

Classroom Resource

Dissolving Is a Property

Subject Area

Science

Grade(s)

2, 5

Overview

In this lesson, students will develop an understanding that whether and how much a substance dissolves (solubility) is a property of that substance. Students will be able to plan and carry out an investigation to compare the solubility of two substances.    

Students develop a test to compare how the candy coating from an M&M and a Skittle dissolve in water. Students put an M&M and a Skittle in the same amount of water at the same temperature at the same time. Students will also see that the inside of the Skittles dissolves but the inside of the M&M does not. Students see an animation to help explain why the inside of the Skittles dissolves but the inside of the M&M does not.

    Science (2015) Grade(s): 2

    SC15.2.1

    Conduct an investigation to describe and classify various substances according to physical properties (e.g., milk being a liquid, not clear in color, assuming shape of its container, mixing with water; mineral oil being a liquid, clear in color, taking shape of its container, floating in water; a brick being a solid, not clear in color, rough in texture, not taking the shape of its container, sinking in water).

    Unpacked Content

    UP:SC15.2.1

    Vocabulary

    • Solid
    • Liquid
    • Physical Properties
    • Investigate
    • Classify
    • Opaque
    • Transparent
    • Translucent
    • Rough
    • Smooth
    • Float
    • Sink
    • Shape
    • Various
    • Substances
    • Conduct
    • Describe

    Knowledge

    Students know:
    • Different kinds of matter exists.
    • Properties of both solids (opaque, transparent, translucent, rough, smooth, float, sink, has its own shape) and liquids (color, assumes shape of container, opaque, transparent, translucent).
    • Many types of matter can be either solid or liquid, depending on temperature.

    Skills

    Students are able to:
    • Plan and conduct an investigation to produce data that is used to describe and classify substances according to physical properties.

    Understanding

    Students understand that:
    • Observable patterns in the properties of materials provide evidence to classify the different kinds of materials.

    Scientific and Engineering Practices

    Planning and Carrying out Investigations

    Crosscutting Concepts

    Patterns
    Science (2015) Grade(s): 5

    SC15.5.3

    Examine matter through observations and measurements to identify materials (e.g., powders, metals, minerals, liquids) based on their properties (e.g., color, hardness, reflectivity, electrical conductivity, thermal conductivity, response to magnetic forces, solubility, density).

    Unpacked Content

    UP:SC15.5.3

    Vocabulary

    • color
    • hardness
    • reflectivity
    • electrical conductivity
    • thermal conductivity
    • response to magnetic forces
    • solubility
    • density
    • measurement (quantitative and qualitative)
    • data
    • observable properties
    • standard units
    • conductors
    • nonconductors
    • magnetic
    • nonmagnetic

    Knowledge

    Students know:
    • Materials have different properties-color, hardness, reflectivity, electrical conductivity thermal conductivity, solubility, and density.
    • Measurements of a variety of properties can be used to identify materials.
    • Measurements should be made in standard units (e.g., grams & liters).

    Skills

    Students are able to:
    • Identify the phenomenon through observations about materials, including color, hardness, reflectivity, electrical conductivity, thermal conductivity, response to magnetic forces, and solubility.
    • Identify the evidence and collect data about the observed objects in standard units (e.g., grams, liters).
    • Collaboratively plan the investigation.
    • Identify materials based on their properties.

    Understanding

    Students understand that:
    • Standard units are used to measure and describe physical quantities of materials such as weight, time, temperature, and volume. These measurements will assist in the identification of the materials ( e.g. powders, metals, minerals, and liquids).

    Scientific and Engineering Practices

    Planning and Carrying out Investigations

    Crosscutting Concepts

    Scale, Proportion, and Quantity
    Link to Resource

    CR Resource Type

    Lesson/Unit Plan

    Resource Provider

    American Chemical Society
    Accessibility
    License

    License Type

    Custom
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