science teacher's guide - DepEd Naga City

CONTENTSDiversity of Materials in the Environment: Overview . . . . . . . . . . . . . . .iModule 1. Solutions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1Activity 1: What Solutions Do You Find in Your Home? . . . . . . . . . . 2Activity 2: What are the Properties of Solution? . . . . . . . . . . . . . . . . 3Activity 3: What is the Evidence that a Solution is Saturated? . . . . . 4Activity 4: Size Matters! . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7Activity 5: How Fast does Coffee Dissolve in Hot Water?In Cold Water?. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9Activity 6: Which Dissolves Faster in Hot and in Cold Water:Sugar or Salt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10Pre/Post Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13Module 2. Substances and Mixtures . . . . . . . . . . . . . . . . . . . . . . . . . . . 17Activity 1: Seawater! See Water and Salts! . . . . . . . . . . . . . . . . . . . . 18Activity 2: Looks may be Deceiving . . . . . . . . . . . . . . . . . . . . . . . . . 20Activity 3: My Unknown Sample: Substance or Mixture? . . . . . . . . . 25Pre/Post Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26Module 3. Elements and Compounds . . . . . . . . . . . . . . . . . . . . . . . . . . 28Activity 1: Water, “Wat-er You Made Of?. . . . . . . . . . . . . . . . . . . . . . 29Activity 2: The Periodic Table: It’s Element-ary! . . . . . . . . . . . . . . . . 34Activity 3: The “Matter” on Labels . . . . . . . . . . . . . . . . . . . . . . . . . . . 36Activity 4: The Iron-y of Food. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38Pre/Post Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39Module 4. Acids and Bases . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41Activity 1: How can You Tell if the Mixture is Acidic or Basic?. . . . . . 41Activity 2: Color Range, pH Scale! . . . . . . . . . . . . . . . . . . . . . . . . . . 45Activity 3: What Happens to a Metal when Exposed toan Acidic Mixture? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47Pre/Post Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48Module 5. Metals and Nonmetals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51Activity 1: Which can Conduct Electricity, Metals or Nonmetals? . . . 52Activity 2: Acidity of the Oxides of Metals and Nonmetals . . . . . . . . 56Pre/Post Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57