WorksheetsChemical Reaction Quiz
Total questions: 45
Worksheet time: 1hrs 8mins
Classify the following reaction: Cu(OH)₂ ---> CuO + H₂O
Synthesis
Single Replacement
Double Replacement
Decompostion
The total number of electrons the first two energy levels of an atom can hold is (Hint: First level can hold a maximum of 2 electrons):
2
6
10
18
An example of a physical property of a substance is its:
Acidity
Oxidization
Flammability
Boiling point
In your phone charger and computer, this material is often used to supplement electrical energy flow:
Copper
Germanium
Iron
Stainless Steel
A solid mixture of more than one element is an:
(a)
All earthly lifeforms are (a) based, meaning that your body is made up of bonds with relation to this element.
Energy levels, insofar as atoms are concerned, tells you which of the following?
How many electrons are in a given element.
Distance between the electrons and the nucleus.
Where each of the electrons are at every moment.
How much power an atom contains. (i.e. adding up all the charges)
Which of the following elements is NOT found in the earths atmosphere (in significant enough quantaties)?
Nitrogen
Oxygen
Krypton
Helium
A reaction is categorized as (a) if forming new bonds releases more energy than it takes to break the old bonds, OR if the reaction gives off energy.
A reaction is categorized as (a) if forming new bonds releases less energy than it takes to break the old bonds, or if energy absorption takes place.
The energy needed to start a reaction and break chemical bonds in the reactants is referred to as the:
(a)
Why is it that gasoline does not spontaneously combust?
Gasoline does not have the potential to combust.
Gasoline must be ignited via an activation energy.
When going through the refining process, the essential parts of gasoline that allow it to ignite are stripped.
Gasoline must be acted upon by one of the newtonian forces to bring about combustion.
If an activation energy is acquired, what is the result?
Activation energy breaks bonds of different elemental compounds.
Activation energy brings about bonds between atoms, and can help them form.
Activation energy can result in the destruction, or creation, of bonds.
An (a) reaction is one wherein two or more substances are combined to make a compound.
A (a) reaction is one wherein a single compound is broken down to produce two or more smaller compounds/elements.
Insofar as reactionary symbols are concerned, s stands for
(a)
Insofar as reactionary symbols are concerned, g stands for
(a)
Insofar as reactionary symbols are concerned, L stands for
(a)
Insofar as reactionary symbols are concerned, aq stands for
(a)
A _____-___________ reaction is one where an element replaces a similar element in a compound.
(a)
When two liquids are mixed together, there is a potentiality for what byproduct?
Precipitate
Concoction
Alloy
Mixture
A precipitate is unable to be dissolved in water, or in scientific terms, it is:
(a)
A ______-____________ reaction is one where two reactants swap places and ions.
(a)
A double-replacement reaction almost always results in the creation of a:
Percipitate
Compound
Bonded group of molecules
Displacement equalization
In the refining process of petroleum, the liquid is separated into different refining vats depending on the number of what atom type?
Hydrogen
Carbon
Oxygen
Helium
A (a) reaction is one where a substance reacts with oxygen gas, releasing energy in the form of light and heat.
Nuclear reactions, unlike the other reaction types that we have learned about, deal with protons and neutrons as opposed to electrons.
True
False
You and your family decide to make sourdough bread, so you place yeast and water in a bowl wiht your other ingredients and allow it to ferment. This is an example of what reaction type?
Exothermic
Endothermic
Combustion
Double replacement
You and your family decide to go backpacking in Castle Craigs over the 4th of July weekend. You start a fire with a heap of logs as your fuel, and the flame ignites. What is this reaction type?
Endothermic
Exothermic
Nuclear
Double displacement
A test tube full of alcohol is open to the air. Alcohol burns very well, but the alcohol in the test tube does not start burning by itself because:
It lacks a spark.
It lacks an activation energy.
Alcohol is unable to ignite.
Alcohol is a liquid, and liquids cannot burn.
Which of the following statements about chemical reactions is FALSE?
Chemical reactions rearrange atoms into different combinations of molecules.
Chemical reactions involve the outer electrons of the atoms.
Chemical reactions involve a smaller amount of energy than nuclear reactions.
Chemical reactios have the potential to change the element, due to its ability to change the number of electrons.
What is the following reaction type: 4 Al(s) + 3 O2(g) → 2 Al2O3(s)
Synthesis
Double replacement
Single Replacement
Combustion
What is the following reaction type: Mg + 2HCl → MgCl2 + H2
Synthesis
Double-Replacement
Single-Replacement
Combustion
What type of reaction is the following: Zn + CuSO4 → ZnSO4 + Cu
Single-Replacement
Double-Replacement
Synthesis
Combustion
What type of reaction is the following: KBr + AgNO3 → KNO3 + AgBr
Single-Replacement
Double-Replacement
Synthesis
Decomposition
A (a) on the periodic table is a column of elements.
A (a) on the periodic table is a row of elements.
Metalloids make good
Conductors
Insulators
(a) refers to properties that repeat in each period of the periodic table.
The noble gases are located, with respect to the periodic table, on the:
Left hand side
Right hand side
Middle portion
Which of the following IS NOT a Noble Gases:
Helium
Neon
Argon
Krypton
Oxygen
An oxide is a:
Chemical compound containing a bond with nitrogen
Chemical compound containing a bond with oxygen
Chemical compound containing a bond with hydrogen
Chemical compound containing a bond with carbon
The process of creating larger chemicals from smaller ones is a process called (a) .
The example to the right is an example of an exothermic reaction:
True
False
Something is an exothermic reaction, for the purposes of this class, if:
Energy is absorbed, like when you cook an egg on a hot stove top.
Energy is expended, like with the creation of bonds.
Energy is released, like with a campfire.
Energy is stored, like in the case of photosynthesis.
