Chemical Reactions

What is a chemical reaction?

• D. The separation of a mixture into its components.

• B. The process of boiling a liquid to form a gas.

• C. The change in state from solid to liquid.

• A. Transformation of substances into new substances with different properties.

Which of the following is not a type of chemical reaction?

• C. Displacement

• A. Combination

• B. Evaporation

• D. Double displacement

What does the Law of Conservation of Mass state?

• B. Mass remains constant in a closed system.

• D. Mass can change in a closed system.

• C. Mass increases in a closed system.

• A. Mass decreases in a closed system.

What is the purpose of the Activity Series?

• A. To rank elements based on their atomic number.

• B. To predict the color of compounds.

• C. To rank elements based on their reactivity.

• D. To determine the melting point of elements.

What is the process to obtain metals from ores through reduction or electrolysis called?

• D. Extraction of Metals

• B. Metal Purification

• C. Metal Refining

• A. Extraction of Minerals

What does Green Chemistry focus on?

• C. Minimizing impact on nature.

• D. Maximizing the use of chemicals.

• B. Minimizing the use of chemicals.

• A. Maximizing impact on nature.

Which of the following is a type of chemical reaction involving the combination of two or more substances to form a new compound?

• A. Combination

• D. Double displacement

• B. Decomposition

• C. Displacement

What is the language used to describe chemical changes called?

• A. Chemical Code

• B. Chemical Vocabulary

• C. Chemical Terminology

• D. Word and Chemical Reaction

What is the total mass of reactants equal to, according to the Law of Conservation of Mass?

• A. Total mass of products.

• D. Total mass of products.

• B. Half the mass of products.

• C. Double the mass of products.

What does the Extraction of Metals involve?

• D. Obtaining metals from ores through condensation.

• A. Obtaining metals from ores through evaporation.

• B. Obtaining metals from ores through sublimation.

• C. Obtaining metals from ores through reduction or electrolysis.