Concept Review - Manchester High School

1 Copyright by Holt, Rinehart and Winston. All rights Science Spectrum2 Chemical ReactionsSection: Reaction compound that is a reactant in all combustion you can determine if a chemical reaction represents a single-replacement reaction or a double-replacement happens during a reduction/oxidation element is reduced and which is oxidized in the of the following of the five general types of chemical :2Ca 2C 3O2 SiO2 2C:Si 2 COCa3(PO4)2 3H2SO4:3 CaSO4 2H3PO4Ca S:CaS2C8H18 25O2:16CO2 18H2O2Al 3 CuSO4:3Cu Al2(SO4)3Cu 2 AgNO3:Cu(NO3)2 2 AgNameClassDateConcept ReviewSkills WorksheetConcept ReviewsSECTION: THE NATURE OF CHEMICAL REACTIONS1. : Fe2O3and Al; products:Fe and : AgNO3andH2SO4; products: Ag2SO4and the natural gas burns, the bondsin the molecule are broken and theenergy is released as is released as light, heat, orsound: examples may include theflame produced by a match when it isstruck; the production of a gas: exam-ples may include how carbon dioxideis produced when bread is rising; achange in color: examples may includethat apples turn brown when exposedto , carbon, oxygen, and is transferred to the reactantsfrom the surroundings in an endother-mic reaction.

2 Energy is transferred tothe surroundings from the reactants inan exothermic and and O2 SECTION: REACTION single-replacement reaction willhave one compound and one elementas reactants and one compound andone element as products, while a dou-ble-replacement reaction has two com-pounds as reactants and twocompounds as are transferred between ele-ments during the reaction. The sub-stance that gains electrons is reducedand the substance that loses electronsis is reduced, Cu is oxidized is reduced, Al is oxidized5. e. reactions join substances tomake a new, more complex com-pound. Decomposition reactions breaka compound into at least two prod-ucts. In combustion reactions, a sub-stance reacts with oxygen. Insingle-replacement reactions, atoms ofone element appear to take the placeof atoms of another element in a com-pound. In double-replacement reac-tions, ions appear to be exchangedbetween compounds, producing a gas,a solid precipitate, or a : BALANCING CHEMICALEQUATIONS1.

3 A. b. c. d. e. mole ratio for C : O2:CO is 2:1:2. (balanced equation is mol NaOH (balanced equation g CO (78 g ( mol CO)(28 g CO/mol side of the equation has threesodiums, seven oxygens, six hydro-gens, and one phosphorus. Becauseboth sides have the same number ofatoms of each element, mass is : RATES OF a change is made to a system inchemical equilibrium, the equilibriumshifts to oppose the change until anew equilibrium is may vary. The table salt canbe ground up into small particles. Thetemperature of the water can the left the right the right the right4. the left the right the right the right CO) 68 g mol CH3OH32 g) CH3OH) (mol CH3OH/2Na 2H2O:2 NaOH H2)2C O2:2CO)2 NaCl H2SO4:Na2SO4 2 HCl2Al 3 CuSO4:Al2(SO4)3 3Cu4Fe 3O2:2Fe2O32Fe(OH)3:Fe2O3 3H2ON2O5 H2O:2 HNO3 Copyright by Holt, Rinehart and Winston. All rights Science Spectrum88 Chemical ReactionsTEACHER RESOURCE PAGE