Physical Science Module 1, Lecture notes of Earth science

Download Physical Science Module 1 and more Lecture notes Earth science in PDF only on Docsity! Worksheet 1.1 Activity 1.1 Real-Life Applications Which factor affecting reaction rate is depicted in each of the following situations/scenarios. Write your answers in the second column of the table below. Situation/Scenario Factor Affecting Reaction Rate 1. Protein is broken down in the stomach by the enzyme pepsin. 2. More bubbles appear when a concentrated solution of hydrochloric acid is added to a magnesium strip than when a dilute solution of the acid is added. 3. Raw potatoes are cut into thin slices for cooking. 4. Blowing air on a campfire to help get it going. 5. Grains of sugar dissolves quickly in water. 6. Smaller pieces of charcoal are used to grill food. 7. Meat is stored in a refrigerator to last longer. 8. Acid rain erodes marble faster. 9. Protease is used to tenderize meat. 10. Leaving a glass of milk on the table causes it to spoil easily. Max Mirafuentes Academy Physical Science- Module 1 Score Name Date of Submission Contact # Worksheet 2.1 Activity 2.1 Instruction: Try to find the following common materials below to proceed to a simple home experiment and try to answer the following questions. Table 2: Effect of Concentration on Reaction Rates Concentration Total Time of Reaction Observations Pure Vinegar 50% vinegar + 50% water Guide Questions 1. Which reaction had the fastest rate? Why? Answer: ______________________________________________________________________ _______________________________________________ 2. Explain what could be occurring at the molecular level in each example. (How are the molecules moving or acting?) Answer: ______________________________________________________________________ _______________________________________________ Max Mirafuentes Academy Physical Science- Module 1 Effect of Concentration on Reaction Rates Objective: to investigate the effect of concentration on the rate of a reaction. Materials: 2 similar cups 6 mL pure Vinegar 1.5 mL of Water 2 spoonful of Sbaking soda Procedure: 1. In one cup, use pure vinegar (3mL) and place one spoonful of baking soda. Record in Table 3.1.2 the time it takes for the reaction to happen. 2. In another cup, add pure vinegar (1.5mL) and water (1.5 mL) before you add the spoon full of baking soda. Record reaction time in Table 2. Score Name Date of Submission Contact #