Chemical Rxns PRACTICE test

Front

What is the product when rubidium and oxygen gas react?

Back

Rb₂O

Front

What will the coefficient of O₂ be after balancing the equation CH₄ + __O₂ → CO₂ + H₂O?

Back

2

Front

If an element is diatomic, it should have a subscript of ___

Back

2, only when it is an element

Front

Complete the balanced equation for this Double Replacement reaction: 3 NaOH + Fe(NO₃)₃ → ?

Back

3 NaNO₃ + Fe(OH)₃

Front

What are the coefficients for the balanced equation NaBr + CaF₂ → NaF + CaBr₂?

Back

2,1,2,1

Front

What is a chemical reaction?

Back

A process that leads to the transformation of one set of chemical substances to another.

Front

Define a balanced chemical equation.

Back

An equation where the number of atoms for each element is the same on both sides.

Front

What is the law of conservation of mass?

Back

Mass is neither created nor destroyed in a chemical reaction.

Front

What is a diatomic molecule?

Back

A molecule composed of two atoms, which can be of the same or different chemical elements.

Front

What is a coefficient in a chemical equation?

Back

A number placed in front of a compound to indicate how many molecules are involved in the reaction.