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... Can’t tell where an electron is at any moment in time – the uncertainty principle There’s more – the list could be long! ...
... Can’t tell where an electron is at any moment in time – the uncertainty principle There’s more – the list could be long! ...
Example - cloudfront.net
... The law of conservation of _________ must be satisfied. Chemical Reactions Chemical equations give information in two major areas: 1. ______________ and ______________ of the reaction. 2. __________________ of a balanced chemical equation tell us the ___________ of the substances involved. Example o ...
... The law of conservation of _________ must be satisfied. Chemical Reactions Chemical equations give information in two major areas: 1. ______________ and ______________ of the reaction. 2. __________________ of a balanced chemical equation tell us the ___________ of the substances involved. Example o ...
Reactions of Metals and Their Compounds
... Because the metal atoms loses electrons to the sea, they are positively charged (why?). The positive metal IONS are attracted to the negative electrons = METALLIC BONDING. ...
... Because the metal atoms loses electrons to the sea, they are positively charged (why?). The positive metal IONS are attracted to the negative electrons = METALLIC BONDING. ...
Partial Pressures of Gases
... SNC2D 1.7 Balancing Chemical Equations Writing a balanced equation is almost always a useful skill for anyone working with chemicals. Let’s use the method of balancing equations “by inspection,” which means that we will simply count the number of atoms of each element before and after the reaction a ...
... SNC2D 1.7 Balancing Chemical Equations Writing a balanced equation is almost always a useful skill for anyone working with chemicals. Let’s use the method of balancing equations “by inspection,” which means that we will simply count the number of atoms of each element before and after the reaction a ...
HL Multiple choice
... The Kb value for a base is 5.0 × 10–2 mol dm–3 at 298 K. What is the Ka value for its conjugate acid at this temperature? A. ...
... The Kb value for a base is 5.0 × 10–2 mol dm–3 at 298 K. What is the Ka value for its conjugate acid at this temperature? A. ...
Chapter 6 Chemical Reactions and Change
... B. CaCO3(s) + 133 kcal = CaO(s) + CO2(g) C. 2SO2(g) + O2(g) = 2SO3(g) + heat A and C are exothermic; B is endothermic and it proceeds because the CO2 is driven off by heating and escapes into the environment ...
... B. CaCO3(s) + 133 kcal = CaO(s) + CO2(g) C. 2SO2(g) + O2(g) = 2SO3(g) + heat A and C are exothermic; B is endothermic and it proceeds because the CO2 is driven off by heating and escapes into the environment ...
Regents_Chem_Core_for_review
... IV.2 Two major categories of compounds are ionic and molecular (covalent) compounds. (5.2g) IV.3 Chemical bonds are formed when valence electrons are (5.2a): • transferred from one atom to another (ionic) • shared between atoms (covalent) • mobile within a metal (metallic) IV.4 In a multiple covalen ...
... IV.2 Two major categories of compounds are ionic and molecular (covalent) compounds. (5.2g) IV.3 Chemical bonds are formed when valence electrons are (5.2a): • transferred from one atom to another (ionic) • shared between atoms (covalent) • mobile within a metal (metallic) IV.4 In a multiple covalen ...
Chemical Equation Reactions
... molecular equation for the reaction. Although this equation shows the reactants and products of the reaction, it does not give a very clear picture of what truly occurs in solution. In fact, such an aqueous solution actually contains individual IONS, not molecules, in solution. By looking at the afo ...
... molecular equation for the reaction. Although this equation shows the reactants and products of the reaction, it does not give a very clear picture of what truly occurs in solution. In fact, such an aqueous solution actually contains individual IONS, not molecules, in solution. By looking at the afo ...
Document
... An acid is a substance that, when dissolved in water, ionizes and increases the concentration of hydrogen ions, H+. HCl → H+ + Cl A base is a substance that, when dissolved in water, increases the concentration of hydroxide ions, OH-. But, Not all bases contain OHNaOH → Na+ + OH- ...
... An acid is a substance that, when dissolved in water, ionizes and increases the concentration of hydrogen ions, H+. HCl → H+ + Cl A base is a substance that, when dissolved in water, increases the concentration of hydroxide ions, OH-. But, Not all bases contain OHNaOH → Na+ + OH- ...
Lecture 6
... B. CaCO3(s) + 133 kcal = CaO(s) + CO2(g) C. 2SO2(g) + O2(g) = 2SO3(g) + heat A and C are exothermic; B is endothermic and it proceeds because the CO2 is driven off by heating and escapes into the environment ...
... B. CaCO3(s) + 133 kcal = CaO(s) + CO2(g) C. 2SO2(g) + O2(g) = 2SO3(g) + heat A and C are exothermic; B is endothermic and it proceeds because the CO2 is driven off by heating and escapes into the environment ...
chemical reaction - Peoria Public Schools
... A word equation is an equation in which the reactants and products in a chemical reaction are represented with words methane + oxygen → carbon dioxide + water ...
... A word equation is an equation in which the reactants and products in a chemical reaction are represented with words methane + oxygen → carbon dioxide + water ...
Chapter 11 Chemical Reactions
... For some, we will be able to: c) predict whether or not they will happen at all. How? We recognize them by their reactants ...
... For some, we will be able to: c) predict whether or not they will happen at all. How? We recognize them by their reactants ...
File - Varsity Field
... • Ag+ ions accept electrons from copper – reduced to Ag (s). Ag+ is the oxidising agent. • Ag+ (aq) + e→ Ag (s) • Cu (s) donates electrons to Ag+ (aq) – oxidised to Cu2+ (aq). Cu is the reducing agent. • Cu (s) ...
... • Ag+ ions accept electrons from copper – reduced to Ag (s). Ag+ is the oxidising agent. • Ag+ (aq) + e→ Ag (s) • Cu (s) donates electrons to Ag+ (aq) – oxidised to Cu2+ (aq). Cu is the reducing agent. • Cu (s) ...
AQA C2 revision book
... A MOLECULE is a small group of atoms joined together. The atoms may be the same (e.g. O2) or different (e.g. H2O). The chemical formula shows the number and type of atoms present. Non-metal compounds are made of molecules: Carbon dioxide contains CO2 molecules Methane (natural gas) contains CH4 mole ...
... A MOLECULE is a small group of atoms joined together. The atoms may be the same (e.g. O2) or different (e.g. H2O). The chemical formula shows the number and type of atoms present. Non-metal compounds are made of molecules: Carbon dioxide contains CO2 molecules Methane (natural gas) contains CH4 mole ...
Prescribed Practicals
... § Determining water of hydration/molar mass of hydrates § Molar mass of oxides § Combustion of magnesium/copper ...
... § Determining water of hydration/molar mass of hydrates § Molar mass of oxides § Combustion of magnesium/copper ...
Unit 8 Powerpoint
... Zn(s) + Cu(NO3)2(aq) --> Cu(s) + Zn(NO3)2(aq) Whether one metal will displace another metal from a ...
... Zn(s) + Cu(NO3)2(aq) --> Cu(s) + Zn(NO3)2(aq) Whether one metal will displace another metal from a ...
2 - My CCSD
... For some, we will be able to: c) predict whether or not they will happen at all. ...
... For some, we will be able to: c) predict whether or not they will happen at all. ...
Preview Sample 1
... 2. What color is it when in a base? blue 3. What color would you expect it to be if it were in a neutral solution? green 4. Phenolphthalein changes to pink in the presence of bases. 5. What is the advantage of using pHydrion paper rather than bromthymol blue or phenolphthalein? It gives a more accur ...
... 2. What color is it when in a base? blue 3. What color would you expect it to be if it were in a neutral solution? green 4. Phenolphthalein changes to pink in the presence of bases. 5. What is the advantage of using pHydrion paper rather than bromthymol blue or phenolphthalein? It gives a more accur ...
Solutions - Dynamic Science
... 30) Chemists react organic acids with alcohols to form: a) proteins; b) esters; c) hydrogen gas; d) carbon dioxide. 31) Which one of the following is a renewable energy source? a) Natural gas b) Ethanol c) Uranium d) all of the above 32) Which of the following are carbon neutral fuels? a) Ethanol b) ...
... 30) Chemists react organic acids with alcohols to form: a) proteins; b) esters; c) hydrogen gas; d) carbon dioxide. 31) Which one of the following is a renewable energy source? a) Natural gas b) Ethanol c) Uranium d) all of the above 32) Which of the following are carbon neutral fuels? a) Ethanol b) ...
Chemistry Semester Test Study Guide Chapters
... What state of matter has a definite volume and takes the shape of its container? Which state of matter takes both the shape and volume of its container? In a chemical reaction, what are the reactants and what are the products? If the total mass of the reactants in a chemical reaction is 60 g, what i ...
... What state of matter has a definite volume and takes the shape of its container? Which state of matter takes both the shape and volume of its container? In a chemical reaction, what are the reactants and what are the products? If the total mass of the reactants in a chemical reaction is 60 g, what i ...
Chapter 8
... Covalent bonds can be broken. The strength depends on how much distance separates the nuclei. – The shorter the bond length means the bond is stronger due to higher attraction forces. ...
... Covalent bonds can be broken. The strength depends on how much distance separates the nuclei. – The shorter the bond length means the bond is stronger due to higher attraction forces. ...
Atomic number
... Which of these describes a pollution-producing process that involves only a physical change? a) Coal with a high sulfur content is burned, producing gases that cause acid rain. b) Chlorofluorocarbons are released, changing ozone in the upper atmosphere into oxygen. c) Hot wastewater is discharged i ...
... Which of these describes a pollution-producing process that involves only a physical change? a) Coal with a high sulfur content is burned, producing gases that cause acid rain. b) Chlorofluorocarbons are released, changing ozone in the upper atmosphere into oxygen. c) Hot wastewater is discharged i ...
2 Types of Chemical Bonds
... • A chemical bond is formed when atoms of elements change the number of valence electrons they have to get 8 or 2 • A chemical bond combines elements together to form a compound! ...
... • A chemical bond is formed when atoms of elements change the number of valence electrons they have to get 8 or 2 • A chemical bond combines elements together to form a compound! ...
Redox
![](https://commons.wikimedia.org/wiki/Special:FilePath/NaF.gif?width=300)
Redox reactions include all chemical reactions in which atoms have their oxidation state changed; in general, redox reactions involve the transfer of electrons between species. The term ""redox"" comes from two concepts involved with electron transfer: reduction and oxidation. It can be explained in simple terms: Oxidation is the loss of electrons or an increase in oxidation state by a molecule, atom, or ion. Reduction is the gain of electrons or a decrease in oxidation state by a molecule, atom, or ion.Although oxidation reactions are commonly associated with the formation of oxides from oxygen molecules, these are only specific examples of a more general concept of reactions involving electron transfer.Redox reactions, or oxidation-reduction reactions, have a number of similarities to acid–base reactions. Like acid–base reactions, redox reactions are a matched set, that is, there cannot be an oxidation reaction without a reduction reaction happening simultaneously. The oxidation alone and the reduction alone are each called a half-reaction, because two half-reactions always occur together to form a whole reaction. When writing half-reactions, the gained or lost electrons are typically included explicitly in order that the half-reaction be balanced with respect to electric charge.Though sufficient for many purposes, these descriptions are not precisely correct. Oxidation and reduction properly refer to a change in oxidation state — the actual transfer of electrons may never occur. The oxidation state of an atom is the fictitious charge that an atom would have if all bonds between atoms of different elements were 100% ionic. Thus, oxidation is better defined as an increase in oxidation state, and reduction as a decrease in oxidation state. In practice, the transfer of electrons will always cause a change in oxidation state, but there are many reactions that are classed as ""redox"" even though no electron transfer occurs (such as those involving covalent bonds).There are simple redox processes, such as the oxidation of carbon to yield carbon dioxide (CO2) or the reduction of carbon by hydrogen to yield methane (CH4), and more complex processes such as the oxidation of glucose (C6H12O6) in the human body through a series of complex electron transfer processes.