Module 8 - Chemical Equations

Front

What is a coefficient in a chemical equation?

Back

The large number in front of a chemical formula that indicates how many molecules or moles of that substance are present.

Front

What is a subscript in a chemical formula?

Back

The small number written after an element symbol that indicates the number of atoms of that element in a molecule.

Front

What type of reaction is represented by the equation: 2H₂O₂ → 2H₂O + O₂?

Back

Decomposition reaction, where a single compound breaks down into two or more products.

Front

What is the net ionic equation for the reaction between silver nitrate and sodium chloride?

Back

Ag⁺ + Cl⁻ → AgCl(s), showing only the ions that participate in the formation of the precipitate.

Front

How do you balance the equation: ___ SeCl₆ + ___ O₂ → ___ SeO₂ + ___ Cl₂?

Back

The balanced equation is 1 SeCl₆ + 1 O₂ → 1 SeO₂ + 3 Cl₂.

Front

What is the law of conservation of mass?

Back

In a chemical reaction, matter is neither created nor destroyed; the mass of reactants equals the mass of products.

Front

What is a synthesis reaction?

Back

A type of chemical reaction where two or more simple substances combine to form a more complex product.

Front

What is a decomposition reaction?

Back

A type of chemical reaction where a single compound breaks down into two or more simpler products.

Front

What is a single displacement reaction?

Back

A reaction where one element replaces another element in a compound.

Front

What is a double displacement reaction?

Back

A reaction where two compounds exchange ions or bonds to form two new compounds.