Chemical Equations, Reactions, Naming & Formula Writing

Multiple Choice

The red numbers in the image below represent ________

• subscripts
• coefficients
• I don't know, and don't want to try
• None of the answers are correct

Multiple Choice

After blowing out the flame on the candle, James noticed the wick changed from white to black, this is a

• Physical Property
• Physical Change
• Chemical Property 
• Chemical Change 

Fill in the Blanks

During a lab investigation, students followed this procedure:

Students observed bubbles immediately forming around the chalk. After the bubbles stopped forming, the students noticed that the chalk was smaller. Some students tried to recover the missing chalk from the vinegar, but no chalk particles were visible. 

What kind of change did the chalk undergo AND what evidence could be used to support the answer?

Multiple Choice

In a laboratory experiment, a student observes that a vinegar-baking soda mixture becomes colder over time. What type of reaction is likely occurring, and what evidence supports this conclusion?

• Exothermic; the reaction releases heat.

• Endothermic; the reaction absorbs heat.

• Exothermic; the reaction absorbs light.

• Endothermic; the reaction releases gas.

Fill in the Blanks

This is the decomposition reaction of hydrogen peroxide. According to the law of conservation of mass, if you start with 40g of hydrogen peroxide you should end up with

g of water and oxygen combined.

Multiple Choice

Which of the following is NOT one of the 7 diatomic molecules?

• F₂

• O₂

• S₂

• Br₂

Multiple Choice

What do the symbols + and → represent in chemical equations?

• + separates reactants or products

• → indicates a catalyst

• + indicates a solid state

• → indicates a liquid state

Fill in the Blanks

Balance this equation

_ S + _ O₃ → _ SO₂

Note: Write the coefficient "1" to avoid ambiguity

Multiple Choice

When the equation NH₃ + O₂ --> HNO₃ + H₂O is completely balanced using smallest whole numbers, the coefficient of O₂ would be

• 1
• 2
• 3
• 4

Multiple Choice

When the equation is balanced what are the correct coefficients?

• 1, 1, 2

•  1, 3, 1

• 2, 2, 3

• 2, 3, 2

Fill in the Blanks

Balance the following combustion reaction.

___ C₃H₈ + ___ O₂ → ___ CO₂ + ___ H₂O

Multiple Choice

What are the products of this single replacement reaction: Mg + CuSO₄

• Cu + MgSO₄

• Cu + SO₄Mg

• Cu + Mg(SO₄)₂

• No Reaction

Multiple Choice

What is essential for a combustion reaction to begin?

• Carbon dioxide
• Fuel 
• Fuel, oxygen and heat
• Water and oxygen

Multiple Select

Select all of the following that will be no reactions:

• Ag + KNO₃ -->

• Cu + FeSO₄ -->

• Zn + AgNO₃ -->

• Cl₂ + NaBr -->

• S + MgCl₂ -->

Multiple Choice

In this equation,
CuCl₂ + NaOH  → Cu(OH)₂ + NaCl
Which product is insoluble?

• copper(II) hydroxide
• sodium chloride
• sodium hydroxide
• copper(II) chloride

Categorize

Options (10)

potassium

nitrates

sodium

ammonium

acetates

chlorides

carbonates

lithium

sulfates

barium

Organize the ions into soluble or insoluble categories using the SNAP rules.

soluble

insoluble

Multiple Choice

What is the difference between an overall ionic equation and a net ionic equation?

• An overall ionic equation shows all ions, while a net ionic equation shows only reacting ions.

• An overall ionic equation shows only reacting ions, while a net ionic equation shows all ions.

• Both equations show the same information.

• An overall ionic equation is used for single replacement reactions, while a net ionic equation is used for double replacement reactions.

Multiple Choice

What are the spectator ions in the reaction of sodium chloride with silver nitrate?

• silver and nitrate
• sodium and chloride
• sodium and nitrate
• silver and chloride

Fill in the Blanks

$H_2C_2O_4+K_2MnO_4\rightarrow CO_2+K_2O+Mn_2O_3+H_2O$  K potassium oxidation number in the products

Multiple Choice

$$H_2C_2O_4+K_2MnO_4\rightarrow CO_2+K_2O+Mn_2O_3+H_2O$$ C is 

• oxidized

• reduced

• spectator ion

Multiple Choice

$$H_2C_2O_4+K_2MnO_4\rightarrow CO_2+K_2O+Mn_2O_3+H_2O$$ K is  

• oxidized

• reduced

• spectator ion

Multiple Choice

A ______________ is a substance that increases the rate of a reaction without being used up during the reaction. 

• catalyst
• product
• reactant
• solute

Multiple Select

What must occur to have an effective reaction to occur? (Select all answers that apply).

• Sufficient energy

• Correct orientation

• Two different reactants.

• minimum activation energy

Multiple Choice

What is the name of this compound Na₂SO₄?

• Disodium Monosulfur Tetraoxide

• Sodium (II) Sulfate

• Sodium Sulfate

• Sodium Sulfur Oxide

Multiple Choice

What is the name of this compound Br₆F₁₀?

• Hexabromine Decafluoride

• Decabromine Hexafluoride

• Bromine Fluoride

• Hexabromide Decafluorine

Multiple Choice

What is the name of this compound H₂S?

• Sulfurous Acid

• Hydrosulfuric Acid

• Sulfuric Acid

• Hydrogen Sulfide Acid

Multiple Choice

What is the chemical name of Ag₂O?

• Disilver monoxide

• Silver (II) Oxide

• Silver (I) Oxide

• Silver Oxide

Multiple Choice

What is the chemical name for H₂SO₃?

• Sulfuric Acid

• Sulfurous Acid

• Hydrosulfuric Acid

• Dihydrogen Monosulfur Trioxide

Multiple Choice

What is the chemical name for MnCl₃?

• Manganese (I) Chloride

• Manganese Trichloride

• Manganese Chloride

• Manganese (III) Chloride

Multiple Choice

What is the name of this compound C₃Cl₁₀ ?

• Tricarbon Decachloride

• Carbon Chloride

• Decacarbon Trichloride

• Carbon (III) Chloride

Multiple Choice

What is the chemical name for H₃PO₄ ?

• Phosphorous Acid

• Phosphoric Acid

• Hydrophosphoric Acid

• Hydrogen Phosphorous Oxide

Multiple Choice

What is the name of NiO ?

• Nickel Oxide

• Nickel (I) Oxide

• Nickel (II) Oxide

• Nickel Monoxide

Multiple Choice

When naming acids, the prefix hydro- is used when the name of the acid anion ends in _______.

• -ide

• -ate

• -ite

• -ic

Multiple Choice

What is the name of H₂SO₃?

• hyposulfuric acid

• hydrosulfuric acid

• sulfuric acid

• sulfurous acid

Multiple Choice

What is the correct name for the compound CoCl₂?

• cobalt(I) chlorate

• cobalt(I) chloride

• cobalt(II) chlorate

• cobalt(II) chloride

Multiple Choice

What is the correct name for the compound with the formula (NH₄)₃PO₄

• Ammonium Pyrophosphite

• Ammonium Phoporylate

• Ammonium Phosphite

• Ammonium Phosphate

Multiple Choice

The correct name for the compound with the formula PbSO₃ is

• Lead (II) Sulfite

• Lead (III) Sulfite

• Lead Sulfite

• Lead Sulfate

Multiple Choice

What is the correct name for Mn(SO₄)₂

• Manganese (VI) Sulfate

• Manganese (IV) Sulfate

• Magnesium (II) Sulfide

• Magnesium (III) Sulfide

Multiple Choice

What is the correct name for MoO₃

_{(think about how compounds have to be reduced to the simplest integer ratio)}

• Molybdenum V oxide

• Molybdenum VI oxide

• Molybdenum III oxide

Multiple Choice

What is the correct name for the compound with the formula NH₄NO₃

• ammonium nitrite

• ammonium nitrate

• ammonium nitride

Multiple Choice

What is the name for the compound with the formula NH₄Cl

• ammonium chloride

• ammonium hypochlorite

• ammonium hypochlorate

• ammonium chlorate