Parts of A Chemical Equation Quiz

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Questions and Answers

What is the definition of a chemical symbol?

A combination of chemical symbols and numbers
A starting material in a chemical reaction
One or two letters that represent an element (correct)
A number in front of a chemical formula

What is a chemical formula?

A combination of chemical symbols and numbers to represent a substance.

What is a subscript in a chemical equation?

A number written slightly below and to the right of a chemical symbol that shows how many atoms of an element are in a compound.

What does a coefficient indicate in a chemical equation?

A number in front of a chemical formula that indicates how many molecules or atoms of each reactant and product are involved in a reaction. Signup and view all the answers

What are reactants in a chemical reaction?

Starting material(s) in a chemical reaction. Signup and view all the answers

What are products in a chemical reaction?

The element(s) or compound(s) produced by a chemical reaction. Signup and view all the answers

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Study Notes

Chemical Equation Components

Chemical Symbol: Represents an element with one or two letters (e.g., H for Hydrogen, O for Oxygen).
Chemical Formula: Combines chemical symbols and numbers to denote a specific substance (e.g., H2O represents water).
Subscript: A number located slightly below and to the right of a chemical symbol indicating the number of atoms in a compound (e.g., in H2O, the "2" indicates two hydrogen atoms).
Coefficient: A number placed in front of a chemical formula in a reaction that shows the quantity of molecules or atoms involved (e.g., 2H2 + O2 → 2H2O indicates two molecules of H2 react with one molecule of O2).
Reactants: The initial materials present before a chemical reaction takes place (e.g., in the reaction H2 + O2 → H2O, H2 and O2 are the reactants).
Products: The substances formed as a result of a chemical reaction (e.g., in the reaction H2 + O2 → H2O, H2O is the product).