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Honor's Chemistry Chemical Reaction Basics

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Last updated 11 months ago
22 questions
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Balance the Equation(use the format of 2, 4, 1,3)

____N2 + ____O2 + ____H2O → ____HNO3

Question 14
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Balance the Equation(use the format of 2, 4, 1)

____Al + _____Br2 → ____AlBr3

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  1. The skeleton chemical equation for the reaction between zinc metal and hydrochloric acid is shown. What change needs to be made in order to balance this reaction equation?
Zn + HCl → ZnCl2 + H2
Change the subscript in H2 to 1
put a coefficient 2 in front of Zn
put a coefficient 2 in front of HCl
change the subscript in ZnCl2 to 1
Examine the following reaction, then identify the reactants and products:

H2O2 --> H2O + O2
H2O
H2O2
O2
Reactant(s)
Product(s)
Identify the reaction type: Ca + 2HCl → CaCl2 + H2
Decomposition
Synthesis
Double Replacement
Combustion
Single Replacement
Identify the reaction type: 2Na + Cl2 → 2NaCl
Combustion
Single Replacement
Double Replacement
Decomposition
Synthesis
Identify the reaction type: CH4 + 2O2 → CO2 + 2H2O
Decomposition
Combustion
Single Replacement
Synthesis
Double Replacement
Identify the reaction type: Pb(NO3 )2 + 2KI → PbI2 + 2KNO3
Single Replacement
Decomposition
Combustion
Double Replacement
Synthesis
Identify the reaction type: Zn + 2HCl → H2 + ZnCl2
Combustion
Decomposition
Synthesis
Single Replacement
Double Replacement
Which basic reaction type is NOT shown here?
Decomposition
Synthesis
Combustion
Single replacement
When two solutions are mixed and a cloudy substance forms, it is called a
PRECIPITATE. Which substance is the precipitate in the reaction above?
Barium sulfate
Sodium sulfate
Sodium chloride
Barium chloride
Is it possible to have a chemical reaction where there is only one reactant?
Yes
No
If a gas is produced in a chemical reaction, does that gas count as a product?
Yes
No
Based on the understanding of the way the metals are placed in the activity series, the student correctly predicted the outcome of four reactions. According to the student, which reactions are most likely to take place? Select all that apply.
Zn and CuSO4
Ag and CuSO4
Fe and ZnSO4
Mg and ZnSO4
The reactants for a certain chemical reaction are shown. Cu(NO3)2 + NaOH → Which of the following shows the correct product or products of this reaction?
Cu(OH)2 + NaNO3
Cu(NO3)2NaOH
CuOH + Na(NO3)2
CuNa2 + OHNO3
What is the main product of the reaction between magnesium and oxygen?
O₂Mg
MgO
MgO₃
MgO₂
Students want to gather evidence for the claim that the number of atoms before a chemical reaction is equal to the number of atoms after the chemical reaction. They decide to react vinegar and baking soda in a sealed plastic bag. Which of the following would provide the evidence the students need?
Bubbles were produced during the reaction, which meant that a gas was being produced.
The plastic bag did not change in any way, indicating that it was not involved in the reaction.
The plastic bag did not change in any way, indicating that it was not involved in the reaction.
The mass of the baking soda was exactly equal to the mass of the vinegar used to create the chemical reaction.
Which of the following is true regarding the atoms involved in a chemical reaction?
Some of the atoms will always be changed into a different type of atom by a chemical reaction.
During a chemical reaction, atoms will always be combined into a much larger molecule.
Some of the atoms present before the reaction will always be lost during a chemical reaction.
The same number of each type of atom will always be present before and after a chemical reaction takes place.
Match the metal with its possible reaction product. (Some of these might be NR based on activity series-)
Zinc with magnesium sulfate
Barium chloride and hydrogen gas
Aluminum with copper sulfate
Zinc sulfate and magnesium metal
Barium with hydrochloric acid
Aluminum sulfate and copper metal
Match the nonmetal with its expected reaction product.
Fluorine with potassium iodide
Iron oxide and sulfur dioxide
Chlorine with sodium bromide
Potassium fluoride and iodine
Oxygen with iron sulfide
Sodium chloride and bromine
Match these metals with their activity series positions.
Aluminum
More reactive than copper
Zinc
Less reactive than aluminum
Copper
More reactive than zinc
Identify the reaction types based on these metals.
Iron with hydrochloric acid
Produces sodium hydroxide and hydrogen
Calcium and sulfur
Gives iron chloride and hydrogen gas
Sodium reacts with water
Results in calcium sulfide