--- title: Lessons for Chemical Reactions | K-8 grade description: Chemical Reactions Disciplinary Core Ideas image: https://www.knowatom.com/hubfs/Right%20Image.png --- [![Teacher Login](https://no-cache.hubspot.com/cta/default/347944/f56bee57-133e-4975-8055-799f1f23588b.png)](https://cta-redirect.hubspot.com/cta/redirect/347944/f56bee57-133e-4975-8055-799f1f23588b) [Teacher Login](https://app.knowatom.com/signin) [![KnowAtom Logo](https://www.knowatom.com/hubfs/KnowAtom%20Logo.svg "KnowAtom Logo")](https://www.knowatom.com/) # Chemical Reactions Disciplinary Core Ideas [![Download a Sample Unit](https://no-cache.hubspot.com/cta/default/347944/20eee377-e175-48fe-a039-ae723137a2a6.png)](https://cta-redirect.hubspot.com/cta/redirect/347944/20eee377-e175-48fe-a039-ae723137a2a6) Science & Engineering Practices - [Asking questions and defining problems](https://www.knowatom.com/asking-questions-and-defining-problems) - [Developing and using models](https://www.knowatom.com/developing-and-using-models) - [Planning and carrying out investigations](https://www.knowatom.com/planning-and-carrying-out-investigations) - [Analyzing and interpreting data](https://www.knowatom.com/analyzing-and-interpreting-data) - [Constructing explanations and designing solutions](https://www.knowatom.com/constructing-explanations-and-designing-solutions) - [Engaging in argument from evidence](https://www.knowatom.com/engaging-in-argument-from-evidence) - [Obtaining evaluating and communicating information](https://www.knowatom.com/obtaining-evaluating-and-communicating-information) Disciplinary Core Ideas - [Structure and Properties of Matter](https://www.knowatom.com/structure-and-properties-of-matter) - [Chemical Reactions](https://www.knowatom.com/chemical-reactions) Crosscutting Concepts - [Patterns](https://www.knowatom.com/patterns) - [Cause and Effect](https://www.knowatom.com/cause-and-effect) [![New call-to-action](https://no-cache.hubspot.com/cta/default/347944/b5a1446e-d782-4a5f-a019-0b3b98c8304f.png)](https://cta-redirect.hubspot.com/cta/redirect/347944/b5a1446e-d782-4a5f-a019-0b3b98c8304f) ## Lessons for Chemical Reactions Grade Ranges All K-2 3-5 6-8 [![](https://www.knowatom.com/hubfs/image2-Oct-07-2023-10-22-11-9967-AM.png) ](https://www.knowatom.com/science-phenomena-videos/2nd-grade-science/matter-and-properties) ## [Matter and Properties In 2nd grade, students conduct investigations, carry out experiments, and apply their scientific knowledge to engineer prototype solutions. In this unit, students investigate the science phenomenon of properties of different kinds of matter, connecting a material’s properties with the functions for which it is used. ](https://www.knowatom.com/science-phenomena-videos/2nd-grade-science/matter-and-properties) [ VIEW LESSON ](https://www.knowatom.com/science-phenomena-videos/2nd-grade-science/matter-and-properties) [![](https://www.knowatom.com/hubfs/image3-Oct-07-2023-10-32-25-3571-AM.png) ](https://www.knowatom.com/science-phenomena-videos/2nd-grade-science/water-flow) ## [Water Flow In this unit, students explore the phenomena of Earth landforms and the water cycle. Once students have modeled landforms and created maps showing the shapes and kinds of land and bodies of water, students analyze how water moves over the land as it flows downhill because of gravity and cycles between solid and liquid depending on the amount of heat present. ](https://www.knowatom.com/science-phenomena-videos/2nd-grade-science/water-flow) [ VIEW LESSON ](https://www.knowatom.com/science-phenomena-videos/2nd-grade-science/water-flow) [![](https://www.knowatom.com/hubfs/image3-Oct-07-2023-02-50-14-1580-PM.png) ](https://www.knowatom.com/science-phenomena-videos/4th-grade-science/water-erosion) ## [Water Erosion In this unit, students stimulate the movement of tectonic plates and analyze maps to observe how plate boundaries create patterns in Earth’s features. In this lesson, they build on that knowledge to observe the science phenomenon of how water erodes sediment. This page highlights key components of this lesson.](https://www.knowatom.com/science-phenomena-videos/4th-grade-science/water-erosion) [ VIEW LESSON ](https://www.knowatom.com/science-phenomena-videos/4th-grade-science/water-erosion) [![](https://www.knowatom.com/hubfs/Conservation-of-Matter11.jpg) ](https://www.knowatom.com/science-phenomena-videos/5th-grade-science/conservation-of-matter) ## [Conservation of Matter In this unit, students are introduced to the scientific process as they analyze matter in the universe and Earth’s place in the solar system. For the first lesson in this unit, they conduct an experiment to compare the masses of two different substances, analyzing how matter is never created or destroyed. Students also discuss how all matter in the universe is made up of different combinations of atoms formed from chemical reactions. This page highlights key parts of this lesson.](https://www.knowatom.com/science-phenomena-videos/5th-grade-science/conservation-of-matter) [ VIEW LESSON ](https://www.knowatom.com/science-phenomena-videos/5th-grade-science/conservation-of-matter) [![](https://www.knowatom.com/hubfs/Grade/Screenshot%20(28).png) ](https://www.knowatom.com/science-phenomena-videos/7th-grade-science/chemical-reactions) ## [Chemical Reactions In this unit, students focus on interactions between matter and energy. In this lesson, students figure out the endothermic and exothermic phenomenon of chemical hot and cold packs to analyze matter and energy in different kinds of chemical reactions. This page is a high-level extract of this lesson. ](https://www.knowatom.com/science-phenomena-videos/7th-grade-science/chemical-reactions) [ VIEW LESSON ](https://www.knowatom.com/science-phenomena-videos/7th-grade-science/chemical-reactions) [![](https://www.knowatom.com/hubfs/Grade/Screenshot%20(28).png) ](https://www.knowatom.com/science-phenomena-videos/7th-grade-science/engineering-chemical-cold-pack-reactions) ## [Engineering Chemical Cold Pack Reactions In this unit, students explore several phenomena that relate to cooking. In this lesson, students evaluate chemical reactions, and use that knowledge to engineer a prototype that transfers energy by chemical processes. This page showcases key components of this lesson. ](https://www.knowatom.com/science-phenomena-videos/7th-grade-science/engineering-chemical-cold-pack-reactions) [ VIEW LESSON ](https://www.knowatom.com/science-phenomena-videos/7th-grade-science/engineering-chemical-cold-pack-reactions) [![](https://www.knowatom.com/hubfs/Grade/Screenshot%20(32).png) ](https://www.knowatom.com/science-phenomena-videos/7th-grade-science/the-rock-cycle) ## [The Rock Cycle In this unit, students use what they know about the relationship between energy and matter to investigate phenomena of how energy powers the cycling of Earth materials. They begin with this lesson on modeling the Earth processes that form different kinds of rock. This page provides an overview of this lesson.  ](https://www.knowatom.com/science-phenomena-videos/7th-grade-science/the-rock-cycle) [ VIEW LESSON ](https://www.knowatom.com/science-phenomena-videos/7th-grade-science/the-rock-cycle) [![](https://www.knowatom.com/hubfs/Grade/Screenshot%20(32).png) ](https://www.knowatom.com/science-phenomena-videos/7th-grade-science/renewable-energy) ## [Renewable Energy In this unit, students explore the natural processes that cause Earth’s surface to change over time, analyzing how energy causes Earth’s matter to transform and cycle from one form to another. In this lesson, they trace phenomena of how energy is transferred in chemical reactions, which allows scientists to produce ethanol to use as an alternative energy source. This page showcases each component of this lesson.](https://www.knowatom.com/science-phenomena-videos/7th-grade-science/renewable-energy) [ VIEW LESSON ](https://www.knowatom.com/science-phenomena-videos/7th-grade-science/renewable-energy) [![](https://www.knowatom.com/hubfs/image4-Oct-09-2023-06-17-26-8016-AM.png) ](https://www.knowatom.com/science-phenomena-videos/8th-grade-science/chemical-reactions) ## [Chemical Reactions In this unit, students explore the relationship between matter and energy using the phenomenon of material properties to discover why certain materials are useful for a particular function. For this lesson, they focus on the role of energy in changing matter during a chemical reaction phenomena between two substances. This page is a high-level extract of this lesson. ](https://www.knowatom.com/science-phenomena-videos/8th-grade-science/chemical-reactions) [ VIEW LESSON ](https://www.knowatom.com/science-phenomena-videos/8th-grade-science/chemical-reactions) [![](https://www.knowatom.com/hubfs/image3-Oct-09-2023-06-17-27-2694-AM.png) ](https://www.knowatom.com/science-phenomena-videos/8th-grade-science/polymer-structure-and-function) ## [Polymer Structure and Function In this unit, students use the phenomenon of why certain materials (such as the materials that make up a baseball) are useful for a particular function to explore the relationship between matter and energy phenomena. In this lesson students manipulate the properties of a polymer bouncy ball by changing the amounts of reactants in a chemical reaction. This page highlights parts of this lesson. ](https://www.knowatom.com/science-phenomena-videos/8th-grade-science/polymer-structure-and-function) [ VIEW LESSON ](https://www.knowatom.com/science-phenomena-videos/8th-grade-science/polymer-structure-and-function) [![](https://www.knowatom.com/hubfs/image2-Oct-08-2023-10-49-46-7511-AM.png) ](https://www.knowatom.com/science-phenomena-videos/5th-grade-science/weathering-rocks) ## [Weathering Rocks In this unit, students explore science phenomena including the processes that shape Earth’s surface. In this lesson, they figure out how weathering and erosion affect different categories of rocks. This page highlights key components of this lesson.](https://www.knowatom.com/science-phenomena-videos/5th-grade-science/weathering-rocks) [ VIEW LESSON ](https://www.knowatom.com/science-phenomena-videos/5th-grade-science/weathering-rocks) [![](https://www.knowatom.com/hubfs/image4-Oct-08-2023-07-36-35-4598-PM.png) ](https://www.knowatom.com/science-phenomena-videos/6th-grade-science/molecules) ## [Molecules In this unit, students explore the science phenomena of interactions between energy and matter, analyzing how matter can only change when enough energy is present. In this lesson, they investigate the structure of molecules, relating this structure to the matter’s properties. This page is a high-level extract of this lesson.](https://www.knowatom.com/science-phenomena-videos/6th-grade-science/molecules) [ VIEW LESSON ](https://www.knowatom.com/science-phenomena-videos/6th-grade-science/molecules) [![](https://www.knowatom.com/hubfs/image3-Oct-08-2023-07-36-38-7863-PM.png) ](https://www.knowatom.com/science-phenomena-videos/6th-grade-science/chemical-reactions) ## [Chemical Reactions In this unit, students build on their knowledge of energy by exploring the relationship between energy and matter. In this lesson students conduct an investigation into the science phenomenon of how energy is transferred in an endothermic reaction. This page provides an overview of this lesson. ](https://www.knowatom.com/science-phenomena-videos/6th-grade-science/chemical-reactions) [ VIEW LESSON ](https://www.knowatom.com/science-phenomena-videos/6th-grade-science/chemical-reactions) [![](https://www.knowatom.com/hubfs/Screenshot%20(33).webp) ](https://www.knowatom.com/science-phenomena-videos/7th-grade-science/natural-resources) ## [Natural Resources In this unit, students use what they know about the relationship between energy and matter to investigate how energy powers the cycling of Earth materials. In this lesson, they analyze the phenomena of processes that form fossil fuels, which determine how these natural resources are distributed around the planet. This page highlights all the parts of this lesson. ](https://www.knowatom.com/science-phenomena-videos/7th-grade-science/natural-resources) [ VIEW LESSON ](https://www.knowatom.com/science-phenomena-videos/7th-grade-science/natural-resources) [![](https://www.knowatom.com/hubfs/image3-Nov-01-2023-09-53-23-1062-AM.png) ](https://www.knowatom.com/science-phenomena-videos/8th-grade-science/the-rock-cycle) ## [The Rock Cycle In this unit, students use what they know about the relationship between energy and matter to investigate phenomena of how energy powers the cycling of Earth materials. They begin with this lesson on modeling the Earth processes that form different kinds of rock. This page provides an overview of this lesson. ](https://www.knowatom.com/science-phenomena-videos/8th-grade-science/the-rock-cycle) [ VIEW LESSON ](https://www.knowatom.com/science-phenomena-videos/8th-grade-science/the-rock-cycle) Standards citation: NGSS Lead States. 2013. *Next Generation Science Standards: For States, By State*s. Washington, DC: The National Academies Press. 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