Chemical Equations
... compare for each element. If any of these numbers do not match, the equation is not balanced and you will need proceed to the following steps 3. Balance by placing coefficients in front of the formulae. Do not change the actual formula. If the substance is present as an element, leave the balancing ...
... compare for each element. If any of these numbers do not match, the equation is not balanced and you will need proceed to the following steps 3. Balance by placing coefficients in front of the formulae. Do not change the actual formula. If the substance is present as an element, leave the balancing ...
E:\My Documents\sch3u\SCH3Ureview.wpd
... 12) a) Draw a Lewis dot diagram for a typical atom in the Oxygen family of elements. b) What is the typical ionic charge of these atoms. c) Explain why all the atoms in this family form stable ions with this charge. 13) The Alkali Metals are a very reactive family of metals. a) Explain what happens ...
... 12) a) Draw a Lewis dot diagram for a typical atom in the Oxygen family of elements. b) What is the typical ionic charge of these atoms. c) Explain why all the atoms in this family form stable ions with this charge. 13) The Alkali Metals are a very reactive family of metals. a) Explain what happens ...
Chapter 5
... Any spoilage of food by microorganisms (general use) Any process that produces alcoholic beverages or acidic dairy products (general use) Any large-scale microbial process occurring with or without air (common definition used in industry) ...
... Any spoilage of food by microorganisms (general use) Any process that produces alcoholic beverages or acidic dairy products (general use) Any large-scale microbial process occurring with or without air (common definition used in industry) ...
Chapter 12 - "Chemical Formulas and Equations"
... – An oxidation reduction reaction is one in which electrons are transferred between atoms. – Oxidation is the loss of electrons – Reduction is the gain of electrons – Oxidizing agents are substances which take electrons away from other atoms. • An oxidizing agent is reduced when it oxidizes another ...
... – An oxidation reduction reaction is one in which electrons are transferred between atoms. – Oxidation is the loss of electrons – Reduction is the gain of electrons – Oxidizing agents are substances which take electrons away from other atoms. • An oxidizing agent is reduced when it oxidizes another ...
Matter is anything that occupies space and has mass. Examples
... o NH4Cl = Ammonia Chloride o Na2SO4 = sodium sulfate When to use Roman numerals • Roman Numerals are used with metal ions that can form more than one ion. • Group I and II metals never use Roman Numerals • Most other metals do use Roman Numerals except for Aluminum, Zinc, and Silver Examples: Chromi ...
... o NH4Cl = Ammonia Chloride o Na2SO4 = sodium sulfate When to use Roman numerals • Roman Numerals are used with metal ions that can form more than one ion. • Group I and II metals never use Roman Numerals • Most other metals do use Roman Numerals except for Aluminum, Zinc, and Silver Examples: Chromi ...
Chapter 2
... stable When valence shell is not full, atoms tend to lose, gain, or share electrons ...
... stable When valence shell is not full, atoms tend to lose, gain, or share electrons ...
Unit 2 Review for Test
... 40. What elements make up a protein? 42. Name the building blocks of lipids. 43. Draw a structural diagram showing a simple representation of a fatty acid.. 44. List some types of lipids. 45. Name the primary use of the type of macromolecule which is a source of energy. 46. Name the macromolecule wh ...
... 40. What elements make up a protein? 42. Name the building blocks of lipids. 43. Draw a structural diagram showing a simple representation of a fatty acid.. 44. List some types of lipids. 45. Name the primary use of the type of macromolecule which is a source of energy. 46. Name the macromolecule wh ...
Objective: The objective of the lab is to study the types of reactions
... A dissociation reaction is one that forms ions. If a molecule is made up on ions it might be able to be dissolved in water. Table salt (NaCl) is an example of a compound that is easily split into the Na+1 and the Cl-1 ions that make it up. Ions are charged particles that are very much similar to an ...
... A dissociation reaction is one that forms ions. If a molecule is made up on ions it might be able to be dissolved in water. Table salt (NaCl) is an example of a compound that is easily split into the Na+1 and the Cl-1 ions that make it up. Ions are charged particles that are very much similar to an ...
The production and use of metals
... mobile ions Al3+ and O2-. This takes enormous amounts of energy. Aluminium oxide is an ionic compound. Because of its giant lattice structure it has a very high melting point (efforts to reduce the melting point of aluminium oxide are made by adding it to a substance called cryolite) 2. The molten a ...
... mobile ions Al3+ and O2-. This takes enormous amounts of energy. Aluminium oxide is an ionic compound. Because of its giant lattice structure it has a very high melting point (efforts to reduce the melting point of aluminium oxide are made by adding it to a substance called cryolite) 2. The molten a ...
Paper
... (b) From July 2008 changes will apply to the way in which taxes are levied on new cars bought in Ireland. Vehicles that, in controlled tests, have higher levels of carbon dioxide emission per kilometre travelled will be subject to higher levels of taxation. The measures are designed to encourage the ...
... (b) From July 2008 changes will apply to the way in which taxes are levied on new cars bought in Ireland. Vehicles that, in controlled tests, have higher levels of carbon dioxide emission per kilometre travelled will be subject to higher levels of taxation. The measures are designed to encourage the ...
Final Exam Review Day 1
... Mg+2 Valence electrons are electrons in the outer shell. Determine the number of valence electrons and draw the dot diagrams for the ...
... Mg+2 Valence electrons are electrons in the outer shell. Determine the number of valence electrons and draw the dot diagrams for the ...
Surface electrochemistry
... kurių metu išsiskiria energija. Short course annotation in English (up to 500 characters) The course presents the electrochemical processes on the surfaces making emphasis on adsorption, corrosion and oxidation. The other key topics include the study of the relationship between chemical change and e ...
... kurių metu išsiskiria energija. Short course annotation in English (up to 500 characters) The course presents the electrochemical processes on the surfaces making emphasis on adsorption, corrosion and oxidation. The other key topics include the study of the relationship between chemical change and e ...
Chapter 8 Notes
... And for negative ions: Chlorine Sulfur Phosphorus Try p. 214 # 2 – 5 Formation of Ionic Compounds: Now that we have an idea how ions are formed we can explain how ionic compounds form. We will use Sodium Chloride as a first example. The sodium atom looses an electron to become positively charged. Th ...
... And for negative ions: Chlorine Sulfur Phosphorus Try p. 214 # 2 – 5 Formation of Ionic Compounds: Now that we have an idea how ions are formed we can explain how ionic compounds form. We will use Sodium Chloride as a first example. The sodium atom looses an electron to become positively charged. Th ...
CHEMICAL REACTIONS
... Oxidation - the oxidation number of one or more elements increases (it loses electrons). Reduction - the oxidation number of one or more of the elements decreases (it gains electrons). Oxidizing agent - A substance that causes oxidation of another substance (it is, itself, reduced) Reducing agent - ...
... Oxidation - the oxidation number of one or more elements increases (it loses electrons). Reduction - the oxidation number of one or more of the elements decreases (it gains electrons). Oxidizing agent - A substance that causes oxidation of another substance (it is, itself, reduced) Reducing agent - ...
Exam Review - hrsbstaff.ednet.ns.ca
... The reaction of solutions of ammonium phosphate and barium nitrate gives a precipitate of barium phosphate. The equation that best represents this statement is a) 2(NH4)3PO4(s) + 3Ba(NO3)2(aq) → Ba3(PO4)2(aq) + 6NH4NO3(s). b) 2(NH4)3PO4(aq) + 3Ba(NO3)2(aq) → Ba3(PO4)2(s) + 6NH4NO3(aq). c) 2(NH4)3PO4 ...
... The reaction of solutions of ammonium phosphate and barium nitrate gives a precipitate of barium phosphate. The equation that best represents this statement is a) 2(NH4)3PO4(s) + 3Ba(NO3)2(aq) → Ba3(PO4)2(aq) + 6NH4NO3(s). b) 2(NH4)3PO4(aq) + 3Ba(NO3)2(aq) → Ba3(PO4)2(s) + 6NH4NO3(aq). c) 2(NH4)3PO4 ...
Physical and Chemical Prop/changes
... Temperature change - Thermal energy (heat) is absorbed or given off ...
... Temperature change - Thermal energy (heat) is absorbed or given off ...
Electrons
... • If life exists on other planets, there most likely is water present • Water has many properties that make life possible ...
... • If life exists on other planets, there most likely is water present • Water has many properties that make life possible ...
GCE Chemistry Question Paper Unit 05 - Energetics, Redox
... l The maximum mark for this paper is 100. l You are expected to use a calculator, where appropriate. l The Periodic Table/Data Sheet is provided as an insert. l Your answers to the questions in Section B should be written in ...
... l The maximum mark for this paper is 100. l You are expected to use a calculator, where appropriate. l The Periodic Table/Data Sheet is provided as an insert. l Your answers to the questions in Section B should be written in ...
Electrochemistry
Electrochemistry is the branch of physical chemistry that studies chemical reactions which take place at the interface of an electrode, usually a solid metal or a semiconductor, and an ionic conductor, the electrolyte. These reactions involve electric charges moving between the electrodes and the electrolyte (or ionic species in a solution). Thus electrochemistry deals with the interaction between electrical energy and chemical change.When a chemical reaction is caused by an externally supplied current, as in electrolysis, or if an electric current is produced by a spontaneous chemical reaction as in a battery, it is called an electrochemical reaction. Chemical reactions where electrons are transferred directly between molecules and/or atoms are called oxidation-reduction or (redox) reactions. In general, electrochemistry describes the overall reactions when individual redox reactions are separate but connected by an external electric circuit and an intervening electrolyte.