Chemistry 1 - Edexcel
... These atoms of oxygen are called . . . ......................................................................................................................... because their . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ......... ...
... These atoms of oxygen are called . . . ......................................................................................................................... because their . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ......... ...
New AQA C3 revison guide
... Br2 + 2NaI = I2 + 2KBr THE TRANSITION METALS This is the block which appears in the middle of the periodic table. It contains many of the metals in everyday use, such as iron, nickel and copper. Properties These metals tend to be strong and dense, with a fairly high melting point. Their reactions ar ...
... Br2 + 2NaI = I2 + 2KBr THE TRANSITION METALS This is the block which appears in the middle of the periodic table. It contains many of the metals in everyday use, such as iron, nickel and copper. Properties These metals tend to be strong and dense, with a fairly high melting point. Their reactions ar ...
Chem EOC Review Cumulative Free Response
... 60) What are the characteristics of a metallic compound? 61) Which type of bonding occurs between 2 nonmetals? 62) Which type of bond results in ions surrounded by a shared “sea” of mobile electrons? 63) What type of bond results between 2 atoms with a big difference in electronegativity? (>1.7) 64) ...
... 60) What are the characteristics of a metallic compound? 61) Which type of bonding occurs between 2 nonmetals? 62) Which type of bond results in ions surrounded by a shared “sea” of mobile electrons? 63) What type of bond results between 2 atoms with a big difference in electronegativity? (>1.7) 64) ...
O usually has oxidation number of -2, except in peroxides where it is
... The sum of the oxidation numbers of the elements in a polyatomic ion must equal the ion charge. Consider these examples. If there are two poly atomic ions in a compound deal with them first. ...
... The sum of the oxidation numbers of the elements in a polyatomic ion must equal the ion charge. Consider these examples. If there are two poly atomic ions in a compound deal with them first. ...
2 - CronScience
... 2 substances combine to make one compound (also called “synthesis”) Ca + O2 CaO SO3 + H2O H2SO4 We can predict the products, especially if the reactants are two elements. Mg3N2 (symbols, charges, cross) Mg + N2 _______ ...
... 2 substances combine to make one compound (also called “synthesis”) Ca + O2 CaO SO3 + H2O H2SO4 We can predict the products, especially if the reactants are two elements. Mg3N2 (symbols, charges, cross) Mg + N2 _______ ...
Electrons
... 4. The oxidation number of hydrogen is____except when it is bonded to metals in binary compounds. In these cases, its oxidation number is____. 5. Group 1 metals are____, Group 2 metals are____and fluorine is always____. 6. The sum of the oxidation numbers of all the atoms in a molecule or ion is eq ...
... 4. The oxidation number of hydrogen is____except when it is bonded to metals in binary compounds. In these cases, its oxidation number is____. 5. Group 1 metals are____, Group 2 metals are____and fluorine is always____. 6. The sum of the oxidation numbers of all the atoms in a molecule or ion is eq ...
Practice problems for chapter 1, 3 and 5 1) A small amount of salt
... 28) The SI unit for mass is __________. 29) __________ is the abbreviation for the prefix mega-. 30) Milli is the abbreviation for the prefix ________. 31) A common English set of units for expressing velocity is miles/hour. The SI unit for velocity is __________. 32) The density of a gold nugget i ...
... 28) The SI unit for mass is __________. 29) __________ is the abbreviation for the prefix mega-. 30) Milli is the abbreviation for the prefix ________. 31) A common English set of units for expressing velocity is miles/hour. The SI unit for velocity is __________. 32) The density of a gold nugget i ...
X012/11/02
... deposits. Sand contains the covalent compound silicon dioxide. What type of structure does silicon dioxide have? (You may wish to use page 6 of the data booklet to help you.) ...
... deposits. Sand contains the covalent compound silicon dioxide. What type of structure does silicon dioxide have? (You may wish to use page 6 of the data booklet to help you.) ...
Chapter 2
... • If electrons in a covalent bond are shared equally, then this is a _______________________. • A covalent bond between two atoms of the same element is always______________. • A covalent bond between atoms that have similar electronegativities is also __________. • Because carbon and hydrogen do no ...
... • If electrons in a covalent bond are shared equally, then this is a _______________________. • A covalent bond between two atoms of the same element is always______________. • A covalent bond between atoms that have similar electronegativities is also __________. • Because carbon and hydrogen do no ...
Catalysis
... available for the promotion of the molecules of reactants e.g In contact process for the manufacture of sulphuric acid, catalytic poison As2S3 adsorb on the active site of Pt forming platinum sulphide on the surface of Pt, thereby reducing the catalytic activity ...
... available for the promotion of the molecules of reactants e.g In contact process for the manufacture of sulphuric acid, catalytic poison As2S3 adsorb on the active site of Pt forming platinum sulphide on the surface of Pt, thereby reducing the catalytic activity ...
Lecture 2 - Columbia University
... Equal volumes of any gas (measured at the same temperature and volume) contain equal numbers of “particles”. The quotes are put about “particles” because Avogadro did not want to differential between atoms and molecules as particles. The remarkable feature of this hypothesis is that it implies that ...
... Equal volumes of any gas (measured at the same temperature and volume) contain equal numbers of “particles”. The quotes are put about “particles” because Avogadro did not want to differential between atoms and molecules as particles. The remarkable feature of this hypothesis is that it implies that ...
Student Exploration Sheet: Growing Plants
... 2. Which ingredient limited the number of hot dogs you could make? ____________________ ...
... 2. Which ingredient limited the number of hot dogs you could make? ____________________ ...
Intermediate 1 Chemistry - Deans Community High School
... Words – gold, hydrogen, bubble, copper, used up ...
... Words – gold, hydrogen, bubble, copper, used up ...
File
... chemical equation. How many grams of acetylene are produced by adding excess water to 5.00 grams of calcium carbide? 46. Using the equation you balanced in the problem above, determine how many moles of calcium carbide are needed to react completely with 49.0 grams of H2O. 47. The last step in the p ...
... chemical equation. How many grams of acetylene are produced by adding excess water to 5.00 grams of calcium carbide? 46. Using the equation you balanced in the problem above, determine how many moles of calcium carbide are needed to react completely with 49.0 grams of H2O. 47. The last step in the p ...
Reaction Predictions
... An electrolysis reaction is a reaction in which a nonspontaneous redox reaction is brought about by the passage of current under sufficient external electrical potential. The devices in which electrolysis reactions occur are called electrolytic cells. In theory, E° values (Standard Reduction Potenti ...
... An electrolysis reaction is a reaction in which a nonspontaneous redox reaction is brought about by the passage of current under sufficient external electrical potential. The devices in which electrolysis reactions occur are called electrolytic cells. In theory, E° values (Standard Reduction Potenti ...
Practice problems for chapter 1, 2 and 3 1) A small amount of salt
... 28) The SI unit for mass is __________. 29) __________ is the abbreviation for the prefix mega-. 30) Milli is the abbreviation for the prefix ________. 31) A common English set of units for expressing velocity is miles/hour. The SI unit for velocity is __________. 32) The density of a gold nugget i ...
... 28) The SI unit for mass is __________. 29) __________ is the abbreviation for the prefix mega-. 30) Milli is the abbreviation for the prefix ________. 31) A common English set of units for expressing velocity is miles/hour. The SI unit for velocity is __________. 32) The density of a gold nugget i ...
Chapter 9 Notes - Get a Clue with Mrs. Perdue
... Chemical Reactions A. When bonds are broken and reformed to make different substances. ...
... Chemical Reactions A. When bonds are broken and reformed to make different substances. ...
Chemistry Notes - The Bored of Studies Community
... A stoichiometric mixture of hydrogen and nitrogen is used because, as ammonia is formed and condensed out, left-over reactants can be recycled through the process (with some fresh reactant mixture added) without any build-up of one reactant over the other. An important factor in designing an industr ...
... A stoichiometric mixture of hydrogen and nitrogen is used because, as ammonia is formed and condensed out, left-over reactants can be recycled through the process (with some fresh reactant mixture added) without any build-up of one reactant over the other. An important factor in designing an industr ...
Chapter 30 - The Chemical Basis of Animal Life
... atom, leaving a proton behind. As a result, the hydrogen atom gains a slight positive charge. The remaining proton is attracted to negatively charged atoms of, for example, oxygen in nearby molecules. When this happens, a weak attraction, called a hydrogen bond, forms. The hydrogen atom in one water ...
... atom, leaving a proton behind. As a result, the hydrogen atom gains a slight positive charge. The remaining proton is attracted to negatively charged atoms of, for example, oxygen in nearby molecules. When this happens, a weak attraction, called a hydrogen bond, forms. The hydrogen atom in one water ...
Chapter 4 - Aqueous Reactions
... Some observations on the series Lead (Pb) is above H, so is Al. But these metals are not attacked by 6M HCl. They form very protective oxides. Cu reacts with nitric acid (HNO3) because that acid is a strong oxidizing agent in addition to being an acid. Gold (Au) and platinum (Pt) are valuable b ...
... Some observations on the series Lead (Pb) is above H, so is Al. But these metals are not attacked by 6M HCl. They form very protective oxides. Cu reacts with nitric acid (HNO3) because that acid is a strong oxidizing agent in addition to being an acid. Gold (Au) and platinum (Pt) are valuable b ...
Chapter 12 Chemical Quantities
... 2C2 H6 7O2 4CO2 6H2O What volume of carbon dioxide can be produced from 1.2 moles of ethane gas at 200K and 0.65 atm? ...
... 2C2 H6 7O2 4CO2 6H2O What volume of carbon dioxide can be produced from 1.2 moles of ethane gas at 200K and 0.65 atm? ...
- Catalyst
... isotopes, rubidium–85 (84.9amu) and rubidium–87 (86.9amu). From this information one can conclude that naturally occurring rubidium is composed of ______________. A) approximately 30% rubidium-85 and 70% rubidium-87 B) approximately 70% rubidium-85 and 30% rubidium-87 C) approximately 20% rubidium-8 ...
... isotopes, rubidium–85 (84.9amu) and rubidium–87 (86.9amu). From this information one can conclude that naturally occurring rubidium is composed of ______________. A) approximately 30% rubidium-85 and 70% rubidium-87 B) approximately 70% rubidium-85 and 30% rubidium-87 C) approximately 20% rubidium-8 ...
Artificial photosynthesis
Artificial photosynthesis is a chemical process that replicates the natural process of photosynthesis, a process that converts sunlight, water, and carbon dioxide into carbohydrates and oxygen. The term is commonly used to refer to any scheme for capturing and storing the energy from sunlight in the chemical bonds of a fuel (a solar fuel). Photocatalytic water splitting converts water into Hydrogen Ions and oxygen, and is a main research area in artificial photosynthesis. Light-driven carbon dioxide reduction is another studied process, replicating natural carbon fixation.Research developed in this field encompasses design and assembly of devices (and their components) for the direct production of solar fuels, photoelectrochemistry and its application in fuel cells, and engineering of enzymes and photoautotrophic microorganisms for microbial biofuel and biohydrogen production from sunlight. Many, if not most, of the artificial approaches are bio-inspired, i.e., they rely on biomimetics.