--- title: 5.2.3 description: 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. 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/) # 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. [![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 - [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) - [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 - [Weather and Climate](https://www.knowatom.com/weather-and-climate) - [Conservation of Energy and Energy Transfer](https://www.knowatom.com/conservation-of-energy-and-energy-transfer) 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) ## Browse 5.2.3 Lesson Plans Grade Ranges All K-2 3-5 6-8 [![](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/image1-Oct-09-2023-07-25-38-5271-AM.png) ](https://www.knowatom.com/science-phenomena-videos/8th-grade-science/magnetism-and-energy) ## [Magnetism and Energy In this unit, students connect their explorations of Earth and life sciences with physical sciences with an exploration into the science phenomena of magnetism and electricity. They investigate magnetic fields and electromagnets in this lesson. This page showcases key parts of this lesson.](https://www.knowatom.com/science-phenomena-videos/8th-grade-science/magnetism-and-energy) [ VIEW LESSON ](https://www.knowatom.com/science-phenomena-videos/8th-grade-science/magnetism-and-energy) [![](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) Standards citation: NGSS Lead States. 2013. *Next Generation Science Standards: For States, By State*s. Washington, DC: The National Academies Press. Neither WestEd nor the lead states and partners that developed the Next Generation Science Standards were involved in the production of this product, and do not endorse it. ![KnowAtom Logo](https://www.knowatom.com/hubfs/KnowAtom%20Logo.svg "KnowAtom Logo") Quick Links Resources Sign Up for Our Blog ### Sign Up for Our Blog Connect with Us - - - - © 2026 KnowAtom LLC  •  10 Brady Drive Unit 3   •  Ipswich MA •   01938 USA [DO NOT SELL MY PERSONAL INFORMATION](https://www.knowatom.com/do-not-sell-my-personal-information) | [Privacy Policy](https://www.knowatom.com/privacy-policy) | [Terms of Use](https://www.knowatom.com/terms-of-use) ```json { "@context" : "http://schema.org", "@type" : "Organization", "address" : { "@type" : "PostalAddress", "addressCountry" : "USA", "addressLocality" : "Salem", "addressRegion" : "MA", "postalCode" : "01970", "streetAddress" : "27 Congress Suite 410" }, "alternateName" : "KA", "areaServed" : { "@type" : "GeoCircle", "geoMidpoint" : { "@type" : "GeoCoordinates", "latitude" : "+42.5182274", "longitude" : "-70.8877569" }, "geoRadius" : "150 km" }, "description" : "Next Generation Science STEM Curriculum", "email" : "fvigeant@knowatom.com", "image" : "https://www.knowatom.com/hubfs/KA-GSD.png", "logo" : "https://www.knowatom.com/hubfs/Knowatom-2017/Image/logo-1.png", "mainEntityOfPage" : { "@id" : "https://www.knowatom.com/5.2.3", "@type" : "WebPage", "description" : "5.2.3 Plan and carry out investigations to determine the effect of combining two or more substances. 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