Question

1) Define Chemical Reaction and Chemical Equation.

2) Characteristics of Chemical Reactions? ​

Answer 1

Answer:

1) A chemical reaction is a process in which one or more substances, also called reactants, are converted to one or more different substances, known as products.

A chemical equation is the symbolic representation of a chemical reaction in the form of symbols and formulae.

2) The characteristics of a chemical reaction are :

• Evolution of gas.
• Formation of a precipitate.
• Change in color.
• Change in temperature.
• Change in state.

Answer 2

Answer:

1)

chemical equation is the symbolic representation of a chemical reaction in the form of symbols and formulae, wherein the reactant entities are given on the left-hand side and the product entities on the right-hand side with a plus sign between the entities in both the reactants and the products and an arrow that points towards the products, and shows the direction of the reaction.[1] The coefficients next to the symbols and formulae of entities are the absolute values of the stoichiometric numbers. The first chemical equation was diagrammed by Jean Beguin in 1615.[2]

2)Some signs of a chemical change are a change in color and the formation of bubbles. The five conditions of chemical change: color change, formation of a precipitate, formation of a gas, odor change, temperature change.

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