The video tutorial explains how to define and order the reactivity of metals. It uses examples of potassium and copper to illustrate reactivity, showing that potassium is more reactive due to its tendency to form positive ions. The tutorial then ranks metals like lithium, sodium, and potassium based on their reactions with water, and zinc, copper, and magnesium based on their reactions with acids. A reactivity series is created, highlighting the most and least reactive metals. The video concludes by comparing the reactivity of magnesium and sodium, emphasizing the importance of the reactivity series.

What is the relationship between a metal's reactivity and its ability to form positive ions?

• Reactivity is unrelated to ion formation.

• Reactivity is inversely proportional to ion formation.

• Reactivity is only related to negative ion formation.

• Reactivity is directly related to the tendency to form positive ions.

Which metal is the most reactive when reacting with water?

• Copper

• Lithium

• Sodium

• Potassium

In the reaction with acids, which metal shows no reaction?

• Magnesium

• Zinc

• Copper

• Sodium

Which metal is more reactive according to the reactivity series: lithium or iron?

• Lithium

• Iron

• Both are equally reactive

• Neither is reactive

Between sodium and magnesium, which metal has a greater tendency to form positive ions?

• Neither forms positive ions

• Both have the same tendency

• Sodium

• Magnesium