Question

identify the type of chemical reaction
background info
a chemical reaction is a process in which one or more substances called reactants are
transformed chemically into different substances called products. during a chemical reaction,
the bonds between atoms in the reactants are broken, and new bonds are formed to create
products. this rearrangement of atoms leads to a change in the composition and property of the
substances involved in the reaction. chemical reactions are classifiable based on the types of
changes that occur during the reaction. while there are many types of chemical reactions,
there are five main types that every scientist and science student should know: synthesis,
decomposition, single replacement, double replacement, and combustion.
synthesis reactions involve two or more substances that chemically combine to form a single
product. the general formula is: a + b -> ab
decomposition reactions occur when a single reactant is broken down into two or more smaller
compounds or atoms. the general formula is: ab -> a + b
single replacement reactions involve the replacing of one element with another element that is
inside of a compound. the general formula is: a + bc -> ac + b
double replacement reactions exchange ions between two different compounds resulting in the
formation of two new substances. the general formula is: ab + cd -> ad + bc
combustion reactions are the result of a reaction between a substance with oxygen. this
results in the release of heat and light. the general formula is: fuel + o2 -> co2 + h2o
types of chemical reactions
synthesis decomposition combustion
single replacement double replacement
identifying chemical reactions:
using the information above, identify each of the following chemical reactions
1.) agno3 + nacl -> agcl + nano3 ____________
2.) c3h8 + 5 o2 -> 3 co2 + 4 h2o ____________
3.) 2 h2o2 -> 2 h2o + o2 ____________
4.) 2 h2 + o2 -> 2 h2o ____________
5.) zn + 2 hcl -> zncl2 + h2 ____________

Explanation:

Step1: Analyze reaction 1

Compare \(AgNO_3 + NaCl \to AgCl + NaNO_3\) with \(AB + CD \to AD+BC\). Here \(A = Ag\), \(B = NO_3\), \(C = Na\), \(D = Cl\).

Step2: Analyze reaction 2

Compare \(C_3H_8 + 5O_2 \to 3CO_2 + 4H_2O\) with \(Fuel+O_2\to CO_2 + H_2O\). \(C_3H_8\) is the fuel.

Step3: Analyze reaction 3

Compare \(2H_2O_2 \to 2H_2O + O_2\) with \(AB\to A + B\). Here \(AB = H_2O_2\), \(A = H_2O\), \(B = O_2\).

Step4: Analyze reaction 4

Compare \(2H_2+O_2\to 2H_2O\) with \(A + B\to AB\). Here \(A = H_2\), \(B = O_2\), \(AB = H_2O\).

Step5: Analyze reaction 5

Compare \(Zn + 2HCl\to ZnCl_2 + H_2\) with \(A+BC\to AC + B\). Here \(A = Zn\), \(BC = HCl\), \(AC = ZnCl_2\), \(B = H_2\).

Answer:

1. Double Replacement
2. Combustion
3. Decomposition
4. Synthesis
5. Single Replacement