Question

drag the tiles to the correct boxes to complete the pairs. identify the type of chemical reaction that is described. neutralization combustion synthesis decomposition water breaks down into hydrogen and oxygen. leaves make starch using chlorophyll and carbon dioxide.

Explanation:

• Decomposition: In a decomposition reaction, a single compound breaks down into two or more simpler substances. Here, water (\(H_2O\)) breaks down into hydrogen (\(H_2\)) and oxygen (\(O_2\)), which fits the definition of a decomposition reaction (\(2H_2O

ightarrow2H_2 + O_2\)).

• Synthesis: A synthesis reaction is when two or more substances combine to form a new compound. Chlorophyll - assisted reaction in leaves where carbon dioxide (\(CO_2\)) and other substances combine to make starch (a complex carbohydrate) is a synthesis - like process (simplified as \(nCO_2+\cdots

ightarrow(C_6H_{10}O_5)_n\)).

Answer:

• Water breaks down into hydrogen and oxygen: decomposition
• Leaves make starch using chlorophyll and carbon dioxide: synthesis