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Condensation of steam Grade 10 SABIS SABIS Exothermic

Catalyst: Definition SABIS Grade 10 SABIS ​ a substance that increases the reaction rate without itself being used up. It speeds up both forward and reverse reactions. A catalyst takes part in the reaction, but is regenerated, so it is not used up.A catalyst acts: by providing a new path of lower activation energy for reactants to follow, so the catalyzed and uncatalyzed pathways proceed simultaneously.

Exothermic Grade 10 SABIS SABIS A reaction that releases heat to the surroundings.

< Back Chapter 13 prerequisite ​ ​ Previous Next 🎆🌟📘 Prerequisites for Chapter 13: Nitrogen and Phosphorus 📘🌟🎆Before diving into 🚀 Chapter 13 , which deals with Nitrogen and Phosphorus , students must have a solid understanding of the following concepts:🔬 1. Basic Atomic Structure 🧪Understand protons, neutrons, and electrons.🔬 2. The Periodic Table 📊Be familiar with the layout of the periodic table and the properties of elements based on their position.🔬 3. Chemical Bonding 💞Understand ionic, covalent, and metallic bonding.🔬 4. Oxidation States ⚖️Understand the common oxidation states of nitrogen and phosphorus.🌈🌟 20 Multiple Choice Questions for Chapter 13: Nitrogen and Phosphorus (Based on Prerequisites) 🌟🌈🤔 Which subatomic particle carries a negative charge? a) Proton b) Neutron c) Electron d) Nucleus🧐 Which element is in Group 15 and Period 2 of the periodic table? a) Nitrogen b) Oxygen c) Carbon d) Phosphorus😯 What type of chemical bond is formed by the sharing of electrons? a) Ionic bond b) Covalent bond c) Metallic bond d) Hydrogen bond🤓 How many valence electrons does nitrogen have? a) 3 b) 5 c) 2 d) 7😲 What is the most common oxidation state of phosphorus? a) +3 b) +5 c) -3 d) +1🧪 Which element is known as a pnictogen? a) Chlorine b) Phosphorus c) Bromine d) Iodine🎈 Which subatomic particle is found in the nucleus and has no charge? a) Proton b) Neutron c) Electron d) Quark🌡️ What type of chemical bond is formed by the transfer of electrons? a) Ionic bond b) Covalent bond c) Metallic bond d) Hydrogen bond💧 How many valence electrons does phosphorus have? a) 3 b) 5 c) 2 d) 7🌟 What is the oxidation state of nitrogen in nitrate (NO3-)? a) +3 b) +5 c) -3 d) +1🍶 Which element is essential for life and is a key component of amino acids and nucleic acids? a) Nitrogen b) Oxygen c) Carbon d) Phosphorus🧲 What is the maximum number of covalent bonds that nitrogen can form? a) 2 b) 3 c) 4 d) 5🎇 What is the most common oxidation state of nitrogen? a) +3 b) +5 c) -3 d) +1🌊 Which element is usedin fertilizers to promote plant growth? a) Nitrogen b) Oxygen c) Phosphorus d) Carbon🌱 Which subatomic particle is found in the nucleus and has a positive charge? a) Proton b) Neutron c) Electron d) Quark🌡️ What type of chemical bond is formed by the attraction between positively charged metal ions and the electrons around them? a) Ionic bond b) Covalent bond c) Metallic bond d) Hydrogen bond🎨 Which element is used in matches and fireworks? a) Chlorine b) Fluorine c) Bromine d) Phosphorus🧊 What is the oxidation state of phosphorus in phosphate (PO4^3-)? a) +3 b) +5 c) -3 d) +1🚀 Which element is a key component of DNA and RNA? a) Nitrogen b) Phosphorus c) Oxygen d) Carbon🧨 What is the term for the outermost electrons in an atom that are involved in chemical bonding? a) Core electrons b) Valence electrons c) Free electrons d) Bonding electrons🌈🌟 Answers 🌟🌈c) Electrona) Nitrogenb) Covalent bondb) 5b) +5b) Phosphorusb) Neutrona) Ionic bondb) 5b) +5a) Nitrogenb) 3c) -3c) Phosphorusa) Protonc) Metallic bondd) Phosphorusb) +5b) Phosphorusb) Valence electrons

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

Chemical Grade 10 SABIS SABIS Relating to chemistry or chemicals.

Exothermic Reaction Grade 10 SABIS SABIS Is a reaction which releases heat to the surrounding. As heat is released, the temperature of the surrounding increases. Cooling a substance, freezing, condensation are examples of exothermic processes

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.

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.