science teacher's guide - DepEd Naga City

Teacher's GuideModule 3: Elements & CompoundsMODULE 3: ELEMENTS AND COMPOUNDSIn this module, students will begin broadening and deepening theirknowledge about substances. They will find out that substances, likemixtures, are of various kinds. Being so, like mixtures which may beclassified in many ways such as solution, suspension, and colloid;substances may also be further classified into smaller groups, such aselements and compounds.Key questions for this moduleHow are elements different from compounds?How are they similar?A series of activities will gear the students in answering the questionsabove. With the hope that students will find connection between the topicsthey have learned in the lower grade levels to the ones they are about tolearn, the first activity will resurface some ideas from Module 2. It will beginwith compound, for the reason that it is more comparable with mixtures interms of the number of components they are made of. Moreover, theproducts obtained from this activity will serve as the examples used tointroduce the next concept, which is element. In this manner, the studentswill see better the connection between compounds and elements, that is,compounds are made up of elements. The periodic table will also beintroduced to familiarize the students with the elements and the periodictable per se. Two activities culminate this module which will let thestudents realize that these elements and compounds are found just aboutanywhere, even with the food they eat.Grade 7 Science: MatterDiversity of Materials in the Environment 28