Standard #: SC.2.P.8.4


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Observe and describe water in its solid, liquid, and gaseous states.


General Information

Subject Area: Science
Grade: 2
Body of Knowledge: Physical Science
Idea: Level 1: Recall
Big Idea: Properties of Matter - A. All objects and substances in the world are made of matter. Matter has two fundamental properties: matter takes up space and matter has mass.

B. Objects and substances can be classified by their physical and chemical properties.

Mass is the amount of matter (or "stuff") in an object. Weight, on the other hand, is the measure of force of attraction (gravitational force) between an object and Earth.

The concepts of mass and weight are complicated and potentially confusing to elementary students. Hence, the more familiar term of "weight" is recommended for use to stand for both mass and weight in grades K-5. By grades 6-8, students are expected to understand the distinction between mass and weight, and use them appropriately.


Clarification for grades K-2: The use of the more familiar term ‘weight’ instead of the term “mass” is recommended for grades K-2.

Clarification for grades 3-5: In grade 3, introduce the term mass as compared to the term weight. In grade 4, investigate the concept of weight versus mass of objects. In grade 5, discuss why mass (not weight) is used to compare properties of solids, liquids and gases.

Date Adopted or Revised: 02/08
Content Complexity Rating: Level 1: Recall - More Information
Date of Last Rating: 05/08
Status: State Board Approved

Related Courses

Course Number1111 Course Title222
5020030: Science - Grade Two (Specifically in versions: 2014 - 2015, 2015 - 2022, 2022 and beyond (current))
7720030: Access Science Grade 2 (Specifically in versions: 2014 - 2015, 2015 - 2018, 2018 - 2023, 2023 and beyond (current))
5020090: STEM Lab Grade 2 (Specifically in versions: 2016 - 2022, 2022 and beyond (current))


Related Access Points

Access Point Number Access Point Title
SC.2.P.8.In.2 Identify objects and materials as solid or liquid.
SC.2.P.8.Su.2 Recognize water in solid or liquid states.
SC.2.P.8.Pa.2 Recognize water as a liquid.


Related Resources

Lesson Plans

Name Description
Water: Responsible Citizens Conserve Water

Students will learn and apply knowledge relating to water’s three main states of matter and how responsible citizenship includes the responsible use of water in this integrated lesson plan.

Explore the States (of Matter): Glorious Gases

This is the third lesson of three lessons designed for second grade students to understand and appreciate what matter is and which properties of matter are used to classify it as a solid, liquid or gas. If this lesson is used without the first lesson, Exploring the states (of Matter): Super Solids, the attached PowerPoint could be shown to as a preview to this exploration.

Explore the States (of Matter): Super Solids

This is the introductory lesson of three lessons designed for second grade students to understand and appreciate what matter is and which properties of matter are used to classify it as a solid, liquid or gas. Because solids are the most familiar form of matter for children, a shorter exploration of solids is included as the hands-on component to accompany the PowerPoint that discusses all states of matter.

Explore the States (of Matter): Lovely Liquids

This is the second lesson of three lessons designed for second grade students to understand and appreciate what matter is and which properties of matter are used to classify it as a solid, liquid or gas. If this lesson is used without the first lesson, Exploring the states (of Matter): Super Solids, the attached PowerPoint could be shown to as a preview to this exploration.

What's the Matter?

This is a lesson where students will identify the properties of matter by their shape, color, size, texture and sink or float. Students will learn about how atoms make up matter through a hands on activity titled "Marshmallow Atoms." They will also be using their daily science notebooks.

Original Student Tutorial

Name Description
Solids, Liquids and Gases, Oh My!

Learn about water in its different states, including solid, liquid, and gas, in this interactive tutorial. 

Presentation/Slideshow

Name Description
Forms of Water

The Tar Heel Reader books may be downloaded as slide shows in PowerPoint, Impress, or Flash format. Each book can be speech enabled and accessed using multiple interfaces, including touch screens, the IntelliKeys with custom overlays, and 1 to 3 switches.

This book provides different examples of the different forms of water: liquid, solid, and gas.

Text Resource

Name Description
States of Water Users can read and view pictures that explain the three phases (solid, liquid, and gas) in which water exists. An activity that illustrates water vapor in one's breath and a brief explanation of what phase changes are and what triggers them is also included.

Unit/Lesson Sequences

Name Description
Water 1: Water and Ice In three connected lessons students observe and describe water as it changes state. In Water 1: Water and Ice, students explored how water can change from solid to liquid and back again. In the second lesson, students will focus on the concept that water can go back and forth from one form to another focusing on a liquid changing to a gas. In the third lesson, students investigate what happens to the amount of different substances as they change from a solid to a liquid or a liquid to a solid.
Matter: Solids

In this unit, properties of matter are introduced and solids are explored. Exposure to the engineering design process synthesizes information learned about solids and asks students to create a homemade play dough recipe.

Water and Wind in Weather

This unit builds on concepts learned in the "Weather Measure" resource for Grade 2. Students are introduced to evaporation and wind. "Windmills" synthesizes information about how wind can move objects by engaging students in the engineering design process in a project that calls for the design and construction of a functioning windmill that can lift a weighted cup.

Video/Audio/Animations

Name Description
Observe Water in Winter and Summer This video clip explores what happens to water in the same location over the course of different seasons. On Earth, water can be found regularly in its three distinct phases; liquid, solid, and gas. Each phase has noticeably different properties that need to be considered in certain circumstances. The phase of water is influenced by atmospheric conditions, specifically seasonal temperatures. An example, is that a boat can float and glide on water in the summer, but it cannot pass through solid ice in the winter.
Observe Clouds Upon observing clouds in a section of the sky, one notices that they are not static. Being composed of tiny particles of water means they are constantly changing and moving. This video clip explores clouds forming, moving, and changing shape.
Solar Still Part 1: Salt Water

The process that moves water around Earth is known as the water cycle. I this ZOOM-adapted video clip, the cast uses a homemade solar still to separate pure water from a saltwater mixture, mimicing this natural process.

Worksheet

Name Description
Changing States of Matter In this activity, students will see that the liquid water can change state again and freeze to become ice.

Student Resources

Original Student Tutorial

Name Description
Solids, Liquids and Gases, Oh My!:

Learn about water in its different states, including solid, liquid, and gas, in this interactive tutorial. 

Presentation/Slideshow

Name Description
Forms of Water:

The Tar Heel Reader books may be downloaded as slide shows in PowerPoint, Impress, or Flash format. Each book can be speech enabled and accessed using multiple interfaces, including touch screens, the IntelliKeys with custom overlays, and 1 to 3 switches.

This book provides different examples of the different forms of water: liquid, solid, and gas.

Text Resource

Name Description
States of Water: Users can read and view pictures that explain the three phases (solid, liquid, and gas) in which water exists. An activity that illustrates water vapor in one's breath and a brief explanation of what phase changes are and what triggers them is also included.

Video/Audio/Animations

Name Description
Observe Water in Winter and Summer: This video clip explores what happens to water in the same location over the course of different seasons. On Earth, water can be found regularly in its three distinct phases; liquid, solid, and gas. Each phase has noticeably different properties that need to be considered in certain circumstances. The phase of water is influenced by atmospheric conditions, specifically seasonal temperatures. An example, is that a boat can float and glide on water in the summer, but it cannot pass through solid ice in the winter.
Solar Still Part 1: Salt Water:

The process that moves water around Earth is known as the water cycle. I this ZOOM-adapted video clip, the cast uses a homemade solar still to separate pure water from a saltwater mixture, mimicing this natural process.



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