Chemistry ยท Science General

Common Chemical Compounds and Reactions

1,197 Questions

Common chemical compounds and reactions questions test your knowledge of everyday chemicals, their formulas, and their interactions. Topics include properties of acids and bases, hard water chemistry, and compounds like baking soda and plaster of paris. This section is essential for general science preparation.

Acids and basesPlaster of parisHard water chemistryCommon chemical formulasEveryday chemical reactions

Common Chemical Compounds and Reactions Questions

Multiple choice

What are the products of saponification?

  1. Soap and glycerol

  2. Soap and water

  3. Glycerol and water

  4. Soap, glycerol, and water
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The products of saponification are soap and glycerol. Soap is a salt of a fatty acid, while glycerol is a trihydroxy alcohol.

Multiple choice

What are the products of hydrolysis?

  1. Soap and glycerol

  2. Soap and water

  3. Glycerol and water

  4. Soap, glycerol, and water
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The products of hydrolysis are glycerol and water. Glycerol is a trihydroxy alcohol, while water is a molecule of hydrogen and oxygen.

Multiple choice

Which of the following is a commonly used preservative?

  1. Sodium benzoate

  2. Potassium sorbate

  3. Calcium propionate

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Sodium benzoate, potassium sorbate, and calcium propionate are all commonly used preservatives that inhibit the growth of bacteria, yeast, and mold in food.

Multiple choice

Which of the following is an example of a food additive that is used to improve dough strength?

  1. Potassium bromate

  2. Sodium bicarbonate

  3. Calcium propionate

  4. All of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Potassium bromate is a food additive that is used to improve dough strength and elasticity, resulting in better bread quality.

Multiple choice

Which of the following is a type of battery that uses a molten salt electrolyte?

  1. Lead-acid battery

  2. Nickel-cadmium battery

  3. Lithium-ion battery

  4. Sodium-sulfur battery
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Sodium-sulfur batteries are a type of rechargeable battery that uses a molten salt electrolyte. They operate at high temperatures and have a high energy density. Sodium-sulfur batteries are used in some electric vehicles and grid storage applications.

Multiple choice

What is the primary component of glass ionomer cement?

  1. Polyacrylic acid

  2. Fluoroaluminosilicate glass

  3. Water

  4. Tartaric acid
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Glass ionomer cement is a type of dental restorative material that is primarily composed of fluoroaluminosilicate glass, which is a type of glass that contains fluoride.

Multiple choice

What is the primary component of zinc oxide eugenol cement?

  1. Zinc oxide

  2. Eugenol

  3. Water

  4. Rosin
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Zinc oxide eugenol cement is a type of dental restorative material that is primarily composed of zinc oxide and eugenol, which is an essential oil derived from cloves.

Multiple choice

The law of definite proportions states that a chemical compound always contains the same elements in the same proportion by mass. This law is also known as the law of constant composition.

  1. True

  2. False
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The law of definite proportions states that a chemical compound always contains the same elements in the same proportion by mass. This law is also known as the law of constant composition.

Multiple choice

What is the main component of mineral paint?

  1. Oil

  2. Water

  3. Minerals

  4. Pigment
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Mineral paint is a type of paint that uses minerals as its main binder. The minerals are mixed with pigments to create the desired color.

Multiple choice

Which of the following is NOT a common type of biocide used in marine corrosion control?

  1. Chlorine

  2. Bromine

  3. Copper

  4. Zinc
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Zinc is not commonly used as a biocide in marine corrosion control. Chlorine, bromine, and copper are more commonly employed.

Multiple choice

What is the chemical formula for water?

  1. H2O

  2. CO2

  3. NaCl

  4. CH4
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The chemical formula for water is H2O, indicating that a water molecule consists of two hydrogen atoms and one oxygen atom.

Multiple choice

What is the chemical formula for sodium chloride?

  1. H2O

  2. CO2

  3. NaCl

  4. CH4
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The chemical formula for sodium chloride is NaCl, indicating that a sodium chloride molecule consists of one sodium atom and one chlorine atom.

Multiple choice

What is the chemical formula for sodium hydroxide?

  1. H2SO4

  2. HCl

  3. HNO3

  4. NaOH
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The chemical formula for sodium hydroxide is NaOH, indicating that a sodium hydroxide molecule consists of one sodium atom, one hydrogen atom, and one oxygen atom.

Multiple choice

What is the chemical formula for calcium carbonate?

  1. CaCO3

  2. MgCO3

  3. Na2CO3

  4. K2CO3
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The chemical formula for calcium carbonate is CaCO3, indicating that a calcium carbonate molecule consists of one calcium atom, one carbon atom, and three oxygen atoms.

Multiple choice

Which of the following is a common cause of efflorescence in mosaics?

  1. Moisture

  2. Salt crystallization

  3. Biological growth

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Moisture, salt crystallization, and biological growth can all contribute to efflorescence in mosaics.