Search Results

Subscripts Grade 10 SABIS SABIS The small numbers written at the lower right of a chemical symbol, indicating the number of atoms of that element in the molecule.

Ne, Ar, Kr, Xe and Rn can be made to react under certain conditions to give very unstable compounds. Grade 10 SABIS ​

Law of Conservation of Matter Grade 10 SABIS SABIS Matter can never be created or destroyed. It follows that in a chemical reaction mass and atoms are conserved. As a chemical reaction involves a rearrangement of atoms number of molecules is not conserved

Absorbing Grade 10 SABIS SABIS Taking in, as in a reaction that absorbs heat is endothermic.

< Back Naming Organic Compounds ​ Files Download Day 5 Notes Naming Compounds The IGCSE Organic Chemistry Challenge .pdf Download PDF • 8.70MB Notes Topic Exercise Answers Naming Compounds HW The 30-Day IGCSE Organic Chemistry Challenge .pdf Download PDF • 11.41MB Naming Organic Compounds IGCSE 0620 .pdf Download PDF • 13.89MB Videos Previous Next

Calorimetry Grade 10 SABIS ​ Calorimetry is the scientific technique used to measure the heat transfer in a chemical or physical process. It involves using a calorimeter, a device designed to measure the heat exchanged between a system and its surroundings. Calorimetry is similar to using a thermometer to measure temperature changes, but instead of temperature, it focuses on the measurement of heat energy. It helps us understand the energy flow in various processes and reactions. An everyday example of calorimetry can be found in cooking. When you place a pot of cold water on a stove and heat it, the heat energy from the stove transfers to the water, causing the temperature of the water to rise. By measuring the temperature change, we can determine the amount of heat energy transferred during the process. Another example is a hot beverage cooling down. When you pour hot coffee into a mug, the heat from the coffee transfers to the mug, causing the coffee to cool down. By monitoring the temperature change over time, you can quantify the rate at which heat is lost by the coffee to its surroundings. Calorimetry is also used in studying metabolic processes in living organisms. For instance, in nutrition studies, a calorimeter can be used to measure the heat produced by the burning of food inside the body, providing insights into energy expenditure and metabolism. In chemistry labs, calorimetry is utilized to determine the heat of a reaction. By measuring the temperature change in a reaction vessel, scientists can calculate the heat energy released or absorbed during the chemical reaction. This information helps understand the energy changes associated with different reactions. Calorimetry plays a crucial role in the design and testing of energy-efficient systems. For example, in the development of more efficient engines or power plants, calorimetry is employed to measure and optimize heat transfer processes, leading to improved energy conversion. Another everyday example is using a hand warmer. Hand warmers utilize an exothermic reaction that releases heat when activated. By enclosing the hand warmer in a calorimeter, the heat energy released can be measured, providing insight into its effectiveness and duration. In summary, calorimetry is a technique used to measure heat transfer in chemical and physical processes. It has applications in cooking, studying metabolic processes, determining heat of reactions, and optimizing energy-efficient systems. Examples such as heating water, cooling hot beverages, and hand warmers help illustrate the practical use of calorimetry in understanding and quantifying heat energy.

Products Grade 10 SABIS SABIS The substances that are formed during a chemical reaction.

Effect of changing concentration on rate of reaction: Grade 10 SABIS ​ Increasing the concentration of a reactant increases the number of particles in a given volume thus the reacting particles will collide more frequently so the number of collisions will increase per unit time, thus rate of reaction increases.

< Back Chapter 5: Stoichiometry Discover the quantitative relationships between reactants and products in chemical reactions and learn how to apply stoichiometric calculations. Chapter 5: Stoichiometry - This chapter covers the calculations involved in chemical reactions. Students will learn how to balance chemical equations, calculate limiting reactants, and determine percent yield. The chapter also covers the mole concept and how to use it in stoichiometry problems. Previous Next

< Back Previous Next

< Back Polymerisation ​ ​ Previous Next

Graphite is a solid non-metal element which is brittle yet conducts electricity Grade 10 SABIS ​