S332 Chemical Reactions Review

Front

What is a decomposition reaction?

Back

A decomposition reaction is a type of chemical reaction where a single compound breaks down into two or more simpler products. Example: 2H₂O → 2H₂ + O₂.

Front

What are the products of the decomposition of aluminum oxide (Al₂O₃)?

Back

The products are aluminum (Al) and oxygen (O₂). The reaction is: Al₂O₃ → 4Al + 3O₂.

Front

What is a double replacement reaction?

Back

A double replacement reaction is a type of chemical reaction where two compounds exchange ions or bonds to form two new compounds. Example: AB + CD → AD + CB.

Front

Identify the precipitate in the reaction: ZnCl₂ + Na₂CO₃ → ?

Back

The precipitate formed is zinc carbonate (ZnCO₃).

Front

How many oxygen atoms are in magnesium nitrate (Mg(NO₃)₂)?

Back

There are 6 oxygen atoms in magnesium nitrate. Calculation: 2(NO₃) contains 2 x 3 = 6 oxygen atoms.

Front

What is a single replacement reaction?

Back

A single replacement reaction is a type of chemical reaction where one element replaces another in a compound. Example: A + BC → AC + B.

Front

What is the outcome of the reaction: Na + FeBr₂?

Back

The outcome is a reaction, resulting in the formation of sodium bromide (NaBr) and iron (Fe).

Front

What type of reaction is the breakdown of hydrogen peroxide (H₂O₂)?

Back

The breakdown of hydrogen peroxide is a decomposition reaction.

Front

What is a synthesis reaction?

Back

A synthesis reaction is a type of chemical reaction where two or more simple substances combine to form a more complex product. Example: A + B → AB.

Front

What is the law of conservation of mass?

Back

The law of conservation of mass states that mass is neither created nor destroyed in a chemical reaction; it is conserved.