Reactivity and Reactions of Aluminum

The video tutorial explains the type of reaction between aluminum and copper (II) sulfate, identifying it as a single displacement reaction. It describes how aluminum displaces copper due to its higher reactivity, as shown in the activity series of metals. The tutorial also covers the role of coefficients and subscripts in the chemical equation and explains the redox nature of the reaction, where aluminum transfers electrons to copper.

What type of reaction occurs when aluminum reacts with copper(II) sulfate?

• Double displacement reaction

• Decomposition reaction

• Single displacement reaction

• Synthesis reaction

In a single displacement reaction, what does aluminum do to copper in copper(II) sulfate?

• Replaces copper in the compound

• Combines with copper to form a new element

• Forms a covalent bond with copper

• Remains unreacted

Why can't copper displace aluminum in a reaction?

• Copper forms a stronger bond with sulfate

• Copper and aluminum have the same reactivity

• Copper is less reactive than aluminum

• Copper is more reactive than aluminum

What does the activity series of metals help us understand?

• The reactivity of metals

• The color of metals

• The melting point of metals

• The density of metals

How many aluminum atoms are needed to replace copper in three copper(II) sulfate molecules?

• Four

• Three

• Two

• One

What is the charge of aluminum when it forms an ionic bond with sulfate?

• One plus

• Zero

• Three plus

• Two plus

What happens to the charge of copper during the reaction with aluminum?

• It becomes more positive

• It becomes more negative

• It remains the same

• It becomes zero

What type of reaction involves the transfer of electrons between aluminum and copper?

• Neutralization reaction

• Redox reaction

• Precipitation reaction

• Acid-base reaction

What is the initial charge of aluminum before it reacts with copper(II) sulfate?

• Zero

• Two plus

• One plus

• Three plus

Which of the following best describes a redox reaction?

• A reaction where electrons are transferred

• A reaction where energy is absorbed

• A reaction where a gas is produced

• A reaction where a solid is formed