Chemical Reactions 2 MUB Study Guide 2023-24 - CP

Front

What is a synthesis (combination) reaction?

Back

A synthesis reaction is a type of chemical reaction where two or more reactants combine to form a single product. Example: Ti + N2 → TiN.

Front

How can you identify a decomposition reaction?

Back

A decomposition reaction occurs when a single compound breaks down into two or more simpler products. Example: Mg3N2 → Mg + N2.

Front

What characterizes a single replacement reaction?

Back

In a single replacement reaction, one element replaces another in a compound. Example: A + BC → AC + B.

Front

What is a double replacement (precipitation) reaction?

Back

A double replacement reaction involves the exchange of ions between two compounds, forming a new compound and often a precipitate. Example: SrBr2 + (NH4)2CO3 → SrCO3 + NH4Br.

Front

What is the general form of a combustion reaction?

Back

A combustion reaction typically involves a hydrocarbon reacting with oxygen to produce carbon dioxide and water. Example: CH4 + 2O2 → CO2 + 2H2O.

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; the total mass of reactants equals the total mass of products.

Front

What is an example of a balanced chemical equation?

Back

2H2 + O2 → 2H2O is a balanced equation showing the conservation of mass.

Front

What is the role of catalysts in chemical reactions?

Back

Catalysts speed up chemical reactions without being consumed in the process, allowing reactions to occur at lower temperatures.

Front

What is an exothermic reaction?

Back

An exothermic reaction is a chemical reaction that releases energy, usually in the form of heat. Example: Combustion of fuels.

Front

What is an endothermic reaction?

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An endothermic reaction is a chemical reaction that absorbs energy from its surroundings. Example: Photosynthesis.