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< Back Hydrogen gas Part 1 Physical properties of hydrogen 1. Colorless odorless gas 2. Neutral to litmus 3. Less dense than air (so collected by upward delivery) 4. Insoluble in water (can be collected over water) 5. Highly flammable Reaction of Hydrogen Gas with Air Reacts with air violently (oxygen) when in contact with a flame. So it makes a squeaky pop with a lit splint 2H2(g) + O2 --> 2H2O Isotopes of Hydrogen Isotopes are atoms of the same element which have the same number of protons (atomic number) but different number of neutrons (mass number). Preparation of Hydrogen gas First : in Laboratory 1-Preparing hydrogen from water or steam Addition of Very reactive metals (example potassium , Sodium , Lithium , Calcium) + liquid water gives hydrogen gas and metal hydroxide. or Addition of metals to steam to produce metal oxide and hydrogen gas 2- Preparing Hydrogen from acids Addition of moderately reactive metals like magnesium aluminum zinc or iron to dilute hydrochloric acid or sulfuric acid Note that less reactive metals can not be used to prepare the hydrogen with dilute acids generally metals which are less reactive than hydrogen can not be used Second : Industrially 1-Using hydrocarbons example by heating a hydrocarbon like methane with steam using a catalyst like nickel , the product is Carbon monoxide and hydrogen gas The carbon monoxide produced can be reheated with more steam using an iron oxide catalyst to produce Carbon dioxide and hydrogen gas 2-Using coke Coke is a fuel made of coal The coke is reacted with steam at high temperature (around 1000) degrees celsius to produce carbon monoxide gas and hydrogen gas 3-Using Electrolysis Electrolysis is the breakdown of a substance using electric current the water is broken down by electrolysis into hydrogen and oxygen Or the NaCl solution (brine) is broken down into chlorine and Hydrogen gases Previous Next

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AP Chemistry Study Guides Unit 1 Revision Guide Atomic structure includes the study of subatomic particles, electron configurations, and periodic trends. Read More Unit 2 Revision Guide Chemical reactions involve the rearrangement of atoms to form new substances. This unit covers balancing chemical equations, types of reactions, and stoichiometry. Read More Unit 3 Revision Guide Thermochemistry deals with the energy changes in chemical reactions. Topics include heat transfer, calorimetry, enthalpy, and Hess's Law. Read More Unit 4 Revision Guide Chemical equilibrium is a dynamic balance between forward and reverse reactions. This unit covers equilibrium constants, Le Chatelier's principle, and factors affecting equilibrium. Read More Unit 5 Revision Guide Electrochemistry studies the relationship between chemical reactions and electricity. Topics include redox reactions, electrochemical cells, Faraday's laws, and electrolysis. Read More Unit 6 Revision Guide Read More Unit 7 Revision Guide Read More Unit 8 Revision Guide Read More Unit 9 Revision Guide Read More

Courses IGCSE Cambridge Chemistry 0620 O level Chemistry For IGCSE Cambridge syllabus اقرأ أكثر Sabis Grade 10 Chemistry ​ اقرأ أكثر Sabis Grade 11 Chemistry ​ اقرأ أكثر Sabis Grade 12 Chemistry Concise content for Grade 12 SABIS Curriculum اقرأ أكثر

Grade 11 SABIS Chemistry Chapter 1: Equilibrium Explore the fascinating world of chemical equilibrium and learn how it impacts various chemical reactions and processes. Read More Chapter 2: Solubility Understand the concepts of solubility and how different factors affect the solubility of substances in different solvents. Read More Chapter 3: Acids and Bases Dive into the world of acids and bases and discover the properties and reactions of different acids and bases. Read More Chapter 4: Electrochemistry Learn about the study of chemical reactions involving the transfer of electrons and their applications in various fields. Read More Chapter 5: Stoichiometry Discover the quantitative relationships between reactants and products in chemical reactions and learn how to apply stoichiometric calculations. Read More Chapter 6 ​ Read More Chapter 7: Electrons and the Periodic Table Learn about the electron configurations of atoms and how they determine the chemical and physical properties of elements. Read More Chapter 8: Molecules in the Gas Phase Understand the behavior of molecules in the gas phase and how to describe their properties using the gas laws. Read More Chapter 9: Bonding in Solids and Liquids Discover the different types of bonding present in solids and liquids and how they affect the physical and chemical properties of materials. Read More Grade 10 Material Revision ​ Read More

Final Revision IGCSE 0620 OCT NOV 2023 Day 1 Day 1Material Read More Day 2 Day 2Material Read More Day 3 Day 3 Material Read More Day 4 Day 4 Material Read More Day 5 Day 5 Material Isomers Read More Day 6 Day 6 Material Alcohols esters and carboxylic acids review Read More Day 7 Day 7 Material Thermochemistry Read More Day 8 Day 8 Material Acids Bases and Salts Read More Day 9 Day 9 Revise Experimental Techniques Read More Day 10 Day 10 Material Petroleum and Fossil Fuels Read More Day 11 Day 11 Material Fast Organic chemistry Review Read More Day 12 Day 12 Material Electrochemistry Read More Day 13 Day 13 Material Acids Bases and Salts Read More Day 14 Day 14 Material Metals Read More Day 15 Day 15 Atoms Elements and Compounds Read More Day 16 Day 16 Addition Polymers Read More Day 17 Day 17 Stoichiometry Fast Revision Read More Day 18 Day 18 Condensation Polymerisation Read More Day 19 Day 19 Definitions Read More Day 20 Day 20 States of Matter Read More Day 21 Day 21 States of Matter part 2 Read More Day 22 Day 22 Extraction of Iron Read More Day 23 Day 23 Experimental Techniques Read More Day 24 Day 24 paper 6 Final Revision Read More Day 30 Day 30 Final Revision Read More

SABIS Topics Hydrogen gas​ Part 1 Physical properties of hydrogen 1. Colorless odorless gas 2. Neutral to litmus 3. Less dense than air (so collected by upward delivery) 4. Insoluble in water (can be collected over water) 5. Highly flammable اقرأ أكثر

IGCSE CHEMISTRY 0620 TOPICS Read More Read More Read More Read More Read More Read More Read More Read More Read More Read More Read More Read More

A level Cambridge Chemistry Atomic Structure Lesson 1 ⚛️ Lesson 1 ⚛️ Read More Atomic Structure Lesson 2 ⚛️ Lesson 2 ⚛️ Read More Atomic Structure Lesson 3 ⚛️ Lesson 3 ⚛️ Read More Atomic Structure Lesson 4 ⚛️ Lesson 4 ⚛️ Read More Atomic Structure Lesson 5 ⚛️ Lesson 5 ⚛️ Read More Atomic Structure Lesson 6 ⚛️ Lesson 6 ⚛️ Read More Atomic Structure Lesson 7 ⚛️ Lesson 7 ⚛️ Read More ​ ​ Read More ​ ⚛️ Lesson 8 ⚛️ Read More ​ ⚛️ Lesson 9 ⚛️ Read More ​ ⚛️ Lesson 10 ⚛️ Read More ​ ⚛️ Lesson 11 ⚛️ Read More ​ ⚛️ Lesson 12 ⚛️ Read More ​ ⚛️ Lesson 13 ⚛️ Read More ​ ⚛️ Lesson 14 ⚛️ Read More Atoms, molecules and stoichiometry This is placeholder text. To change this content, double-click on the element and click Change Content. Read More Chemical bonding This is placeholder text. To change this content, double-click on the element and click Change Content. Read More Chemical Bonding prerequisite ​ Read More States of matter ​ Read More Prerequisites for Chapter 5: States of Matter ​ Read More Chemical energetics Exploring the Energetic World of Chemical Reactions and Thermodynamics Read More Chemical Thermodynamics Prerequisites ​ Read More Electrochemistry ​ Read More Chapter 7 Pre requisite ​ Read More Equilibria ​ Read More Chapter 8 Prerequisite ​ Read More Reaction kinetics ​ Read More Chapter 9 Prerequisite ​ Read More The Periodic Table: chemical periodicity ​ Read More Chapter 10 prerequisite ​ Read More Group 2 ​ Read More Chapter 11 Prerequisite ​ Read More Group 17 ​ Read More Chapter 12 prerequisite ​ Read More Nitrogen and sulfur ​ Read More Chapter 13 prerequisite ​ Read More Hydrocarbons ​ Read More Organic chemistry ​ Read More Halogen compounds ​ Read More Hydroxy compounds ​ Read More

Equilibrium Material Chapter 1 Exercises Page 1 Exercise SABIS Grade 11 This is placeholder text. To change this content, double-click on the element and click Change Content. Read More This is a Title 02 This is placeholder text. To change this content, double-click on the element and click Change Content. Read More This is a Title 03 This is placeholder text. To change this content, double-click on the element and click Change Content. Read More