Chapter 9 - Chemical Reactions Flashcards
Is it a chemical reaction? A tomato smells rotten.
Yes
Is it a chemical reaction? A drinking glass breaks into smaller pieces.
No
Is it a chemical reaction? A piece of ice melts.
No
Is it a chemical reaction? Drain cleaner is mixed with water and the solution becomes warm.
Yes
Is it a chemical reaction? Candle wax burns.
Yes
Is it a chemical reaction? Molten candle wax solidifies.
No
Is it a chemical reaction? Green leaves turn yellow and red as the seasons change.
Yes
Is it a chemical reaction? Baking powder produces a gas that makes cake rise.
Yes
Solid mercury(II) oxide breaks down when heated, forming the elements mercury and oxygen.
2 HgO(s) -> 2Hg + O(g)
Sodium metal reacts with water vapor in air to form solid sodium hydroxide and hydrogen.
2Na(s) + 2H2O(g) -> 2NaOH(s) + H2(g)
In the first step of refining zinc metal from its zinc sulfide ore, the ore is heated in the presence of oxygen. The
products are solid zinc oxide and sulfur dioxide gas.
2ZnS(s) + 3O2(g) -> 2ZnO(s) + 2SO2(g)
The next step of refining zinc involves heating the zinc oxide in the presence of carbon. This reaction produces zinc
vapor and carbon monoxide gas.
ZnO(s) + C(s) -> ZN(g) + CO(g)
Certain pollutants in the air react with water vapor to form acids. For example, sulfur trioxide reacts with water
vapor to form sulfuric acid.
SO3 + H2O -> H2SO4
Solid calcium carbonate is commonly used in antacids because it reacts with the hydrochloric acid found in the
stomach. The products of this reaction are aqueous calcium chloride, carbon dioxide, and water.
CaCO3(s) + 2HCl2(aq) + CO2(g) + H2O(l)
What type of reaction is this?
Q + XZ → X + QZ
single-replacement
What type of reaction is this?
Q + Z → QZ
synthesis
What type of reaction is this?
Q + Z → QZ
decomposition
What type of reaction is this?
double-replacement
A spoonful of sodium chloride is dissolved in a liter of water. What is sodium chloride in this solution?
solute
In an aqueous solution, water is the
solvent
Compounds that produce hydrogen ions in aqueous solutions are
acids
What type of reaction occurs between ions present in aqueous solution?
double-replacement
What type of ions are present in solution but are not actually involved in a chemical reaction?
spectator
If hydrochloric acid and potassium hydroxide react, what is the product of the net ionic equation for the reaction?
water
Which of the following gases is not commonly produced in a double-replacement reaction?
hydrogen cyanide
H+(aq) + Br−(aq) + K+(aq) + OH−(aq) → H2O(l) + Br−(aq) + K+(aq) is an example of what type of chemical equation?
complete ionic
Aluminum lawn furniture becomes coated with a layer of aluminum
oxide when it sits out in the air.
synthesis
Chlorine gas is bubbled through a calcium bromide solution. The
solution turns brown, the color of bromine.
single-replacement
Lime is added to acid water in a lake. Water and a salt form.
double-replacement
Propane is a common household fuel. When burned, water and
carbon dioxide are produced.
combustion
Steel wool burns, forming an iron oxide.
synthesis
When an electric current is passed through molten potassium
bromide, potassium and bromine form.
decomposition
When solutions of sodium iodide and lead nitrate are combined, a
yellow solid forms.
double-replacement
