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7.11 Predicting Products of a Chemical Reaction. By: Sara Palatnik and Linda Kovacs Period: 3. Combination. A new compound is formed when two or more elements or compounds are chemically combined. A + B ―› AB. Calcium + Sulfur ―› Calcium Sulfide (Ca + S ―› CaS). Decomposition.

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7 11 predicting products of a chemical reaction

7.11Predicting Products of a Chemical Reaction

By: Sara Palatnik and Linda Kovacs

Period: 3

combination
Combination
  • A new compound is formed when two or more elements or compounds are chemically combined.

A + B ―› AB

Calcium + Sulfur ―› Calcium Sulfide

(Ca + S ―› CaS)

decomposition
Decomposition
  • Two or more elements and/or new compounds are formed when a compound is decomposed

AB —› A + B

Calcium Sulfide―› Calcium + Sulfur

(CaS —› Ca + S)

single replacement
Single-Replacement
  • In a solution of water an element replaces another element

A + BC ―› AC + B

Chlorine + Sodium Bromide —› Sodium Chloride + Bromine

(Cl2 + 2NaBr ―› 2NaCl + Br2)

double replacement
Double-Replacement

Sodium Chloride + Silver Nitrate ―› Sodium Nitrate + Silver Chloride

(NaCl + AgNO3 —› NaNO3 + AgCl)

  • Two different compounds are formed when cations are exchanged in two ionic compounds.

A⁺B⁻ + C⁺D⁻ —› A⁺D⁻ + C⁺B⁻

combustion
Combustion
  • The reactants include carbon, hydrogen, and oxygen
  • Oxygen reacts with the reactants to produce mostly carbon dioxide and water, but sometimes heat and light are a part of the products
  • If carbon monoxide is formed the reaction is incomplete

Example: CH4 + 2O2→ CO2 + 2H2O

slide8

Fun Facts!!!!!!

  • Most compounds that are going through decomposition, decompose in similar patterns. Knowing these patterns makes it easier to predict the products.
  • These compounds with patterns include carbonates, sulfates, hydroxides, and binary compounds.
  • Most of these compounds break down into their compound and oxygen. However, binary compounds usually break down into their elements.
  • Combination can also be called synthesis.
  • In soft drinks there is carbonic acid. This carbonic acid begins to decompose as soon as it is formed. The equation for this is:
  • H2CO3(aq) → H2O(l) + CO2(g)
identify which type of reaction this is kcl naf nacl kf
Identify which type of reaction this is: KCl + NaF ―› NaCl + KF

B. Double-Replacement

A. Combination

C. Single-Replacement

D. Decomposition

homework predict each outcome and then balance each equation
Homework:Predict Each Outcome and then Balance Each Equation
  • K + O2 → ______________
  • Ca3N2 → _______________
  • NaCl + K → __________
  • NaCl + LiBr → ___________

Fun, helpful website to visit:

http://www.factmonster.com/cig/chemistry/predicting-reaction-products.html