Chemical Reactions

Multiple Choice

What element is the most reactive alkali metal with water?

• sodium

• cesium

• lithium

• potassium

Match

Match the following

diethyl zinc reacting with air

Barking Dog Experiment

Briggs-Rauscher Oscillating Clock

Red phosphorus and bromine

thermite reacting with dry ice.

• diethyl zinc reacting with air

• Barking Dog Experiment

• Briggs-Rauscher Oscillating Clock

• Red phosphorus and bromine

• thermite reacting with dry ice.

Match

Match the following

elephant toothpaste

Pharaoh's Serpeant

Aluminum and Iodine

Hot Ice Sodium Acetqte

The Halloween Clock

• elephant toothpaste

• Pharaoh's Serpeant

• Aluminum and Iodine

• Hot Ice Sodium Acetqte

• The Halloween Clock

Match

Match the following

Nitric Acid reacts with Copper

Salt

Nitrogen Triodide + touch

Dancing Gummy Bears

cesium reacting with water

• Nitric Acid reacts with Copper

• Salt

• Nitrogen Triodide + touch

• Dancing Gummy Bears

• cesium reacting with water

Multiple Choice

Which type of chemical reaction has two or more reactants to make one product?

• combustion

• single displacement

• double displacement

• synthesis

• decomposition

Multiple Choice

Identify the following chemical reaction.

2 NaBr + 1 Ca(OH)₂ ----> 1 CaBr₂ + 2 NaOH

• Synthesis (or combination)

• Decomposition

• Single displacement

• Double displacement

Multiple Choice

Identify the following chemical reaction.

Pb + FeSO₄ ----> PbSO₄ + Fe

• Synthesis (or combination)

• Decomposition

• Single displacement

• Double displacement

Multiple Choice

What reaction has the following general formula:

AB --> A + B

• Synthesis

• Decomposition

• Single Replacement

• Double Replacement

• Combustion

Multiple Choice

What reaction has the following general formula:

A + CD --> C + AD

• Synthesis

• Decomposition

• Single Replacement

• Double Replacement

• Combustion

Multiple Choice

What reaction has the following general formula:

AB + CD --> CB + AD

• Synthesis

• Decomposition

• Single Replacement

• Double Replacement

• Combustion

Multiple Choice

What reaction has the following general formula:

A + B --> AB

• Synthesis

• Decomposition

• Single Replacement

• Double Replacement

• Combustion

Multiple Choice

Which chemical reaction always starts with a hydrocarbon that reacts with oxygen and produces carbon dioxide and water?

• Decomposition

• Synthesis

• Combustion

• Single Replacement

Multiple Choice

Which phrase describes what happens to atoms in a chemical reaction?

• never lost or gained, just rearranged

• sometimes lost, never rearranged

• sometimes lost, gained, or rearranged

• lost or gained, never rearranged

Multiple Choice

Combustion and single-replacement reactions are __________ redox reactions.

• always

• never

• sometimes

• mostly

Multiple Choice

Defined as the loss of electrons.

• oxidation

• reduction

• redox

• OIL RIG

Multiple Choice

Defined as the gain of electrons.

• oxidation

• redox

• reduction

• LEO GER

Multiple Choice

Cl₂ + 2e- --> 2Cl ^- is an example of:

• a chemical reaction

• redox

• oxidation

• reduction

Multiple Choice

These keep track of the movement of electrons.

• (+) and (-) signs

• oxidation numbers

• coefficients

• subscripts

Multiple Choice

An increase in oxidation number.

• more acidic

• reduction

• less basic

• oxidation

Multiple Choice

A decrease in oxidation number.

• concentrated

• reduction

• oxidation

• dilute

Multiple Choice

What is the oxidation number of C in SrCO₃?

• -4

• +2

• -6

• +4

Multiple Choice

What is the oxidation number of Cr in Cr₂O₇^2- ?

• +14

• +6

• -6

• -14

Multiple Choice

Substance that oxidizes another substance by accepting its electrons.

• reducing agent

• oxidation number

• combustion

• oxidizing agent

Multiple Choice

Substance that reduces another substance by losing electrons.

• reducing agent

• half-reaction

• electronegative atom

• oxidizing agent

Multiple Choice

What is the reducing agent here: N₂ + 3H₂ --> 2NH₃

• N₂

• H_2

• NH₃

• 2NH₃