Question

drag the tiles to the correct boxes to complete the pairs.
match the chemical reactions with their properties.
neutralization combustion synthesis decomposition replacement
the reaction has at least two reactants and one product.
the reaction has one reactant and at least two products.
oxygen is one of the reactants, and a large amount of energy is released.
one or more atoms replaces a part of a compound.
the products are always salt and water.

Explanation:

Step1: Analyze synthesis reaction

Synthesis reaction: \( A + B
ightarrow AB \), so it has at least two reactants and one product. So "The reaction has at least two reactants and one product" matches "synthesis".

Step2: Analyze decomposition reaction

Decomposition reaction: \( AB
ightarrow A + B \), so it has one reactant and at least two products. So "The reaction has one reactant and at least two products" matches "decomposition".

Step3: Analyze combustion reaction

Combustion reaction involves oxygen as a reactant and releases a large amount of energy (like burning fuels: \( \text{Fuel} + \text{O}_2
ightarrow \text{CO}_2 + \text{H}_2\text{O} + \text{Energy} \)). So "Oxygen is one of the reactants, and a large amount of energy is released" matches "combustion".

Step4: Analyze replacement reaction

Replacement reaction (single or double) involves an atom or group replacing another in a compound (e.g., \( A + BC
ightarrow AC + B \) or \( AB + CD
ightarrow AD + CB \)). So "One or more atoms replaces a part of a compound" matches "replacement".

Step5: Analyze neutralization reaction

Neutralization reaction is between an acid and a base, producing salt and water (e.g., \( \text{HCl} + \text{NaOH}
ightarrow \text{NaCl} + \text{H}_2\text{O} \)). So "The products are always salt and water" matches "neutralization".

Answer:

"The reaction has at least two reactants and one product" - synthesis
"The reaction has one reactant and at least two products" - decomposition
"Oxygen is one of the reactants, and a large amount of energy is released" - combustion
"One or more atoms replaces a part of a compound" - replacement
"The products are always salt and water" - neutralization