DELIVERABLE 2.2 Geodatabase Activities 2.2 and 2.3 DELIVERABLE 2.3
2.2
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2.2 Activities Remember 1. Chemica l formula e quati on ofte n are use d to repr esent th e chemica ls involved, the physical states of the chemicals are included, and the numbers are written in front of the formulas in order to balance the number of atoms on each side of the equation 2. Symbo ls are us ed to show th e physic al state s of chemic als (s, l ,g !. "n aqueo us solution is obtained when a subs tance is dissol ved in wat er #hin$ 1. % e(&& , 'g, n, "l 2. C)'*+ - a 2C+! - saliv a /0 C)'+a! - C+2 - '2+ !. &t is necessary to balance chemical equations because the reactants and products must both have an equal amount of atoms, or have an equal ratio of atoms
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Transcript of 2.2
2.2 ActivitiesRemember1. Chemical formula equation often are used to represent the chemicals involved, the physical states of the chemicals are included, and the numbers are written in front of the formulas in order to balance the number of atoms on each side of the equation2. Symbols are used to show the physical states of chemicals (s, l ,g)3. An aqueous solution is obtained when a substance is dissolved in waterThink1. Fe(II), Hg, Zn, Al2. C6H8O7 + Na2CO3 + saliva => C6H5O7Na3 + CO2 + H2O3. It is necessary to balance chemical equations because the reactants and products must both have an equal amount of atoms, or have an equal ratio of atoms
