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5.2 Strand

All substances are composed of matter. Matter is made of particles that are too small to be seen but still exist and can be detected by other means. Substances have specific properties by which they can be identified. When two or more different substances are combined, a new substance with different properties may be formed. Whether a change results in a new substance or not, the total amount of matter is always conserved.

STORYLINE: 5.2.1 Particles of Matter

Standard(s) 5.2.1 Develop and use a model to describe that matter is made of particles on a scale that is too small to be seen. Emphasize making observations of changes supported by a particle model of matter. Examples could include adding air to expand a balloon, compressing air in a syringe, adding food coloring to water, or dissolving salt in water and evaporating the water. The use of the terms atoms and molecules will be taught in Grades 6 through 8. (PS1.A)

Practices

Develop and use a model

Obtain, evaluate, and communicate information

Disciplinary Core Ideas

PS1.A: Structure and Properties of Matter

  • The amount (weight) of matter is conserved when it changes form, even in transitions in which it seems to vanish.

Cross Cutting Concepts

Scale, proportion, quantity

Matter and energy

Structure and function

Cause and effect

Storyline Narrative

In this storyline, students investigate matter that cannot always be seen. Students develop and use models while exploring what happens when air is blown through a straw into water. By observing bubbles and moving water, students identify cause-and-effect relationships and use scale, proportion, and quantity to understand that some matter is too small to see but can be detected by its effects. Students begin developing the idea that matter exists even when it is not visible.


Next, students investigate solids, liquids, and gases through hands-on experiences and informational texts. Students obtain, evaluate, and communicate information to explain how different forms of matter behave. Through the lens of structure and function, students learn that matter is made of tiny particles and that the arrangement and movement of those particles determine the properties of solids, liquids, and gases. Students use evidence from observations to support their explanations.


Finally, students investigate why a balloon expands and stays inflated after it is tied. Students develop and use models to explain how air, a gas, takes up space inside the balloon. Using evidence and the crosscutting concepts of scale, proportion, and quantity, matter and energy, structure and function, and cause and effect, students explain how particles too small to be seen account for observable changes. By the end of the storyline, students understand the disciplinary core idea that all matter is made of tiny particles and that matter is conserved even when it changes form or seems to disappear. Students use models and evidence to explain how the structure of particles in solids, liquids, and gases helps account for the behavior of matter.

Phenomena Statement

Students blow through a straw into water and observe the results.

STORYLINE: 5.2.2 Properties of Matter

Standard 5.2.2: Ask questions to plan and carry out investigations to identify substances based on patterns of their properties. Emphasize using properties to identify substances. Examples of properties could include color, hardness, conductivity, solubility, or a response to magnetic forces. Examples of substances could include powders, metals, minerals, or liquids. (PS1.A)

Practices

Ask questions

Plan and carry out investigations

Analyze data

Engage in argument from evidence

Disciplinary Core Ideas

PS1.A: Structure and Properties of Matter

  • The amount (weight) of matter is conserved when it changes form, even in transitions in which it seems to vanish.

Cross Cutting Concepts

Patterns

Storyline Narrative

In this storyline, students investigate how the properties of matter can help identify substances. Students begin by asking questions about why cookies made from the same recipe could taste different. Through planning and carrying out investigations, students compare substances such as salt and sugar and look for patterns in their properties. Students discover that some substances may look similar but have different properties that can be used to tell them apart. Students develop the understanding that different substances have characteristic properties that can be used for identification.


Next, students investigate a variety of materials and their properties, including magnetism, conductivity, hardness, solubility, buoyancy, elasticity, reflectivity, and malleability. Students plan and carry out investigations and analyze data to identify patterns among different types of matter. Students recognize that materials such as metals, plastics, wood, and glass each have unique combinations of properties.


Finally, students apply their understanding to identify unknown white powders. Students plan and carry out investigations, analyze data, and engage in argument from evidence as they test substances and compare their results to known patterns of properties. By the end of the storyline, students understand that patterns in physical properties can be used to identify unknown substances and that scientists use evidence from investigations to determine what materials are made of. Students constructing an explanation of their understanding that substances can be identified by their observable and testable properties.

Phenomena Statement

Different types of matter, such as salt and sugar, have different properties.

Storyline: 5.2.3-4 Changes of Matter

5.2.3: Plan and carry out investigations to determine the effect of combining two or more substances. Emphasize whether a new substance is or is not created by the formation of a new substance with different properties. Examples could include combining vinegar and baking soda or rusting an iron nail in water. (PS1.B)

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5.2.4: Use mathematics and computational thinking to provide evidence that regardless of the type of change that occurs when heating, cooling, or combining substances, the total weight of matter is conserved.

Practices

Obtain, evaluate, and communicate information

Plan and carry out investigations

Use mathematics and computational thinking

Disciplinary Core Ideas

PS1.A: Structure and Properties of Matter

  • The amount (weight) of matter is conserved when it changes form, even in transitions in which it seems to vanish.

 

PS1.B:  Chemical Reactions

  • When two or more different substances are mixed, a new substance with different properties may be formed. 

Cross Cutting Concepts

Cause & Effect

Matter

Systems

Storyline Narrative

In this storyline, students obtain, evaluate, and communicate information and plan and carry out investigations to explore what happens when substances are combined. Using the crosscutting concept of cause and effect, students compare the properties of substances before and after mixing them to determine whether a new substance formed. Students develop the disciplinary core idea that when two or more substances are mixed, a new substance with different properties may or may not be created.

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Students then use mathematics and computational thinking to compare the weight of matter before and after heating, cooling, and combining substances. Through investigations of open and closed systems, students examine the crosscutting concept of matter and identify patterns in their data. Students obtaining information that matter may leave an open system, but it is not destroyed.

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By the end of the storyline, students use evidence from investigations, data, readings, and simulations to explain that some changes create new substances while others do not. Students understand the disciplinary core idea that matter is conserved during physical and chemical changes and that the total amount of matter remains the same, even when matter changes form or seems to disappear.

Phenomena Statement

Students watch a demonstration and a video to observe two different outcomes when sugar combined with two different clear liquids. 

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Utah Science

Curriculum Consortium

Tyson Grover 

tgrover@dsdmail.net

Annette Nielson

afonnesbeck@dsdmail.net

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