Types of Chemical Reactions Student V.

Multiple Choice

Why is it important to understand the different types of chemical reactions in chemistry?

• To identify chemical changes and predict products

• To memorize chemical equations

• To avoid laboratory accidents

• To increase the number of elements

Multiple Choice

Which prefix is used for the number 4 when naming covalent compounds?

• Tetra-

• Penta-

• Hexa-

• Tri-

Multiple Choice

Which of the following statements are true about synthesis reactions?

• Two or more reactants combine to form one new product.

• A single reactant is broken up into simpler substances.

• Synthesis reactions always involve elements only.

• Synthesis reactions do not produce compounds.

Multiple Choice

Which of the following reactions is an example of a decomposition reaction?

• Potassium + sulfur → Potassium Sulfide

• BaCl₂ → Ba + 2Cl

• Ni + O₂ → NiO₂

• Potassium + chlorine → Potassium chloride

Multiple Choice

Which of the following statements best describes a single displacement reaction?

• Two elements combine to form a compound.

• One element displaces another in a compound.

• A compound breaks down into two or more substances.

• Two compounds exchange elements to form two new compounds.

Multiple Choice

Which products are formed when a hydrocarbon undergoes combustion in air?

• Carbon dioxide and water

• Methane and oxygen

• Hydrogen and oxygen

• Carbon monoxide and water

Multiple Select

Select all correct statements about combustion reactions based on the slides.

• Combustion reactions always require oxygen as a reactant.

• Combustion of hydrocarbons produces carbon dioxide and water.

• Combustion is a type of redox reaction.

• Combustion reactions do not change the charges of elements.