S3 Chemistry - eduBuzz.org
... Learning Outcomes for Atomic Theory and Periodic Table S3 Chemistry Identify the 3 sub atomic particles in an atom State the location, charge and mass of each sub atomic particle Calculate the number of protons, neutrons and electrons in an atom Identify whether a species has an equal or un ...
... Learning Outcomes for Atomic Theory and Periodic Table S3 Chemistry Identify the 3 sub atomic particles in an atom State the location, charge and mass of each sub atomic particle Calculate the number of protons, neutrons and electrons in an atom Identify whether a species has an equal or un ...
Chemical reactions
... • Ionic - lacking discrete unit, or molecule • Composed of both metallic and nonmetallic elements • Electronegativity difference > 1.7 ...
... • Ionic - lacking discrete unit, or molecule • Composed of both metallic and nonmetallic elements • Electronegativity difference > 1.7 ...
Chemical Reactions & Balancing Equations
... – same number of atoms of each type of element on each side What if it isn’t balanced already? ...
... – same number of atoms of each type of element on each side What if it isn’t balanced already? ...
e c n i
... Decomposition: When a complex substance is broken into two or more simpler substances: 2H2O 2H2 + O2 Replacement: When one element replaces another or when two elements in different compounds change places: 2CuO + C 2Cu + CO2 ...
... Decomposition: When a complex substance is broken into two or more simpler substances: 2H2O 2H2 + O2 Replacement: When one element replaces another or when two elements in different compounds change places: 2CuO + C 2Cu + CO2 ...
Unit 5 Chemical Properties and Changes Video Notes A ______ is a
... ________________________ A change that alters the identity of a substance resulting in a new substance or substances with different properties ________________________ Those characteristics that can be observed when a chemical reaction changes the identity of the substance, such as potential to rus ...
... ________________________ A change that alters the identity of a substance resulting in a new substance or substances with different properties ________________________ Those characteristics that can be observed when a chemical reaction changes the identity of the substance, such as potential to rus ...
Test: "Chemical Equations" (General Chemistry)
... General Chemistry: Chapter 7 Test 1. In endothermic reactions: a. energy is released b. products have less energy than reactants ...
... General Chemistry: Chapter 7 Test 1. In endothermic reactions: a. energy is released b. products have less energy than reactants ...
Chemical Reactions PPT
... type of atom on the reactants side of the chemical equation MUST be equal to the number of each type of atom on the products side of the equation. • Coefficient-represent the number of units of each substance taking part in the reaction ...
... type of atom on the reactants side of the chemical equation MUST be equal to the number of each type of atom on the products side of the equation. • Coefficient-represent the number of units of each substance taking part in the reaction ...
Learning Outcomes for Chemical Reactions and
... S3 Chemistry • Identify the 3 sub atomic particles in an atom • State the location, charge and mass of each sub atomic particle • Calculate the number of protons, neutrons and electrons in an atom • Identify whether a species has an equal or unequal number of protons and electrons and use this to st ...
... S3 Chemistry • Identify the 3 sub atomic particles in an atom • State the location, charge and mass of each sub atomic particle • Calculate the number of protons, neutrons and electrons in an atom • Identify whether a species has an equal or unequal number of protons and electrons and use this to st ...
Ch. 3 - Chemical Reactions
... Describing Equations Zn(s) + 2HCl(aq) ZnCl2(aq) + H2(g) • How many? • Of what? • In what state? ...
... Describing Equations Zn(s) + 2HCl(aq) ZnCl2(aq) + H2(g) • How many? • Of what? • In what state? ...
Chapter 13 Notes
... Next count the number of atoms of each element on both sides of the yields arrow. If the number of atoms of each element on the left side of the arrow equals the number on the right, the equation is balanced and no further changes are needed. If they are not the same, then we balance the equation by ...
... Next count the number of atoms of each element on both sides of the yields arrow. If the number of atoms of each element on the left side of the arrow equals the number on the right, the equation is balanced and no further changes are needed. If they are not the same, then we balance the equation by ...
3.4 How do we use the Activity Series
... F2 + 2NaCl Cl2 + 2NaF 1. What is the most reactive nonmetal according to the table?___________________________________ 2. ______________________will react with anything below it 3. Will the above reaction take place?_____________________________________________________ 4. Will the reverse reaction ...
... F2 + 2NaCl Cl2 + 2NaF 1. What is the most reactive nonmetal according to the table?___________________________________ 2. ______________________will react with anything below it 3. Will the above reaction take place?_____________________________________________________ 4. Will the reverse reaction ...
2 - DrChoChemistryWebSite
... Solid iron (III) sulfide reacts with gaseous hydrogen chloride to form iron (III) chloride and hydrogen sulfide gas. Nitric acid dissolved in water reacts with solid sodium carbonate to form liquid water and carbon dioxide gas and sodium nitrate dissolved in water. ...
... Solid iron (III) sulfide reacts with gaseous hydrogen chloride to form iron (III) chloride and hydrogen sulfide gas. Nitric acid dissolved in water reacts with solid sodium carbonate to form liquid water and carbon dioxide gas and sodium nitrate dissolved in water. ...
chemical reaction - MRS. STOTTS CHEMISTRY
... Double-Displacement Reactions In double-displacement reactions, the ions of two compounds exchange places in an aqueous solution to form two new compounds. One of the compounds formed is usually a precipitate, an insoluble gas that bubbles out of the solution, or a molecular compound, usually ...
... Double-Displacement Reactions In double-displacement reactions, the ions of two compounds exchange places in an aqueous solution to form two new compounds. One of the compounds formed is usually a precipitate, an insoluble gas that bubbles out of the solution, or a molecular compound, usually ...
CHM 101
... The reactants in a chemical change have 487 kJ of energy. The change they undergo has a H = -157 kJ. The activation energy for the reaction is 570 kJ. a. Draw the energy vs reaction progress graph on the axes above paying attention to all values. Label a point that represents all products and one t ...
... The reactants in a chemical change have 487 kJ of energy. The change they undergo has a H = -157 kJ. The activation energy for the reaction is 570 kJ. a. Draw the energy vs reaction progress graph on the axes above paying attention to all values. Label a point that represents all products and one t ...
Chemical reaction
A chemical reaction is a process that leads to the transformation of one set of chemical substances to another. Classically, chemical reactions encompass changes that only involve the positions of electrons in the forming and breaking of chemical bonds between atoms, with no change to the nuclei (no change to the elements present), and can often be described by a chemical equation. Nuclear chemistry is a sub-discipline of chemistry that involves the chemical reactions of unstable and radioactive elements where both electronic and nuclear changes may occur.The substance (or substances) initially involved in a chemical reaction are called reactants or reagents. Chemical reactions are usually characterized by a chemical change, and they yield one or more products, which usually have properties different from the reactants. Reactions often consist of a sequence of individual sub-steps, the so-called elementary reactions, and the information on the precise course of action is part of the reaction mechanism. Chemical reactions are described with chemical equations, which symbolically present the starting materials, end products, and sometimes intermediate products and reaction conditions.Chemical reactions happen at a characteristic reaction rate at a given temperature and chemical concentration. Typically, reaction rates increase with increasing temperature because there is more thermal energy available to reach the activation energy necessary for breaking bonds between atoms.Reactions may proceed in the forward or reverse direction until they go to completion or reach equilibrium. Reactions that proceed in the forward direction to approach equilibrium are often described as spontaneous, requiring no input of free energy to go forward. Non-spontaneous reactions require input of free energy to go forward (examples include charging a battery by applying an external electrical power source, or photosynthesis driven by absorption of electromagnetic radiation in the form of sunlight).Different chemical reactions are used in combinations during chemical synthesis in order to obtain a desired product. In biochemistry, a consecutive series of chemical reactions (where the product of one reaction is the reactant of the next reaction) form metabolic pathways. These reactions are often catalyzed by protein enzymes. Enzymes increase the rates of biochemical reactions, so that metabolic syntheses and decompositions impossible under ordinary conditions can occur at the temperatures and concentrations present within a cell.The general concept of a chemical reaction has been extended to reactions between entities smaller than atoms, including nuclear reactions, radioactive decays, and reactions between elementary particles as described by quantum field theory.