Predicting Products

Front

What type of reaction is represented by the equation: 2H₂ + O₂ → 2H₂O?

Back

Synthesis reaction: A reaction where two or more reactants combine to form a single product.

Front

What is the generic formula for a single replacement reaction? (A is a metal)

Back

A + BC → AC + B: A metal displaces another metal in a compound.

Front

How do you balance the reaction: ____ CH₄ + ____ O₂ → ___ CO₂ + ____ H₂O?

Back

1, 2, 1, 2: The balanced equation is CH₄ + 2O₂ → CO₂ + 2H₂O.

Front

If an element is diatomic, what should its subscript be when it is by itself?

Back

2: Diatomic elements (like H₂, O₂) have a subscript of 2 when they are not combined with other elements.

Front

What do the blue numbers in a chemical equation represent?

Back

Subscripts: They indicate the number of atoms of each element in a molecule.

Front

What is a decomposition reaction?

Back

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

Front

What is the difference between coefficients and subscripts in a chemical equation?

Back

Coefficients indicate the number of molecules, while subscripts indicate the number of atoms in a molecule.

Front

What is the generic formula for a double replacement reaction?

Back

AB + CD → AD + CB: Two compounds exchange components.

Front

What is the law of conservation of mass?

Back

In a chemical reaction, mass is neither created nor destroyed; it is conserved.

Front

What is an example of a combustion reaction?

Back

CH₄ + 2O₂ → CO₂ + 2H₂O: Methane combusts in oxygen to produce carbon dioxide and water.