Types of Chemical Reactions flashcard

Front

What type of reaction is represented by the equation: H₂ + O₂ → H₂O?

Back

Synthesis reaction: A reaction where two or more reactants combine to form a single product.

Front

What type of reaction is represented by the equation: NiCl₂ → Ni + Cl₂?

Back

Decomposition reaction: A reaction where a single compound breaks down into two or more simpler products.

Front

What is an exothermic reaction?

Back

A reaction that releases energy, usually in the form of heat or light, such as fireworks exploding.

Front

What is an endothermic reaction?

Back

A reaction that absorbs energy from its surroundings, such as photosynthesis.

Front

What is a chemical change?

Back

A change that results in the formation of new chemical substances, such as burning wood.

Front

What is a physical change?

Back

A change that affects one or more physical properties of a substance but does not change its chemical composition, such as melting ice.

Front

In an endothermic reaction, energy is __________.

Back

taken in or absorbed.

Front

What is a single replacement reaction?

Back

A reaction where one element replaces another in a compound, such as Zn + CuSO₄ → ZnSO₄ + Cu.

Front

What is a double replacement reaction?

Back

A reaction where the anions and cations of two different compounds switch places, such as AgNO₃ + NaCl → AgCl + NaNO₃.

Front

What is the law of conservation of mass?

Back

In a chemical reaction, mass is neither created nor destroyed; it is conserved.