Chemical Reaction: Understanding Mole and Reaction

What is mole?

A. A mole is the atom's elementary particle, an ion.

B. The mole of the substance is always related to the Avogadro number.

C. The mole is always associated with the weight or mass of the element or substance.

D. The standard unit of a mole is mol.

Answer:

The correct answer is all of the above.

Mole: A mole is the atom's elementary particle, an ion. It is always related to the Avogadro number and associated with the weight or mass of the element or substance. The standard unit of a mole is mol. The mole is a significant factor in chemical reactions as it helps calculate the weights of atoms, ions, and substances involved.

What is a reaction?

A. A chemical reaction is the transformation of one or more chemicals, known as reactants, into one or more new compounds, known as products.

B. The change in concentration of any of the reactants or products per unit of time can be used to determine the rate or speed of a reaction.

C. The equation rate equals time plus concentration determines the rate of a reaction.

Answer:

A chemical reaction is the transformation of one or more chemicals, known as reactants, into one or more new compounds, known as products.

Reaction: A chemical reaction involves the transformation of reactants into products. It is a process where one or more substances are converted into different compounds. The rate of a reaction can be determined by measuring the change in concentration of reactants or products over time. Understanding reactions is fundamental in chemistry as it explains how substances interact and change.