Reactivity and Reactions of Metals

The video tutorial explains the concept of the activity series, a tool used to predict the reactivity of metals. It highlights how metals at the top of the series, like gold, are less reactive, while those at the bottom, like sodium, are highly reactive. The tutorial demonstrates using the activity series to predict single replacement reactions, such as zinc displacing copper and sodium reacting with water. The video concludes by emphasizing the importance of understanding the activity series for predicting chemical reactions.

What is the primary purpose of the activity series?

• To list elements alphabetically

• To predict the reactivity of elements

• To show the atomic mass of elements

• To categorize elements by color

Why is gold considered a precious metal?

• It is very reactive

• It tarnishes easily

• It does not react with most substances

• It is abundant in nature

Which metal is more likely to oxidize, silver or iron?

• Neither oxidizes

• Both are equally likely

• Iron

• Silver

In a reaction between zinc and copper, which metal is more likely to lose electrons?

• Neither

• Both equally

• Copper

• Zinc

What happens to copper in a reaction with zinc?

• Copper gains electrons

• Copper loses electrons

• Copper remains unchanged

• Copper evaporates

What is the result of dropping sodium into water?

• No reaction occurs

• Hydrogen gas is released

• Sodium dissolves without reaction

• Water freezes

Why does sodium react so vigorously with water?

• It is less reactive than hydrogen

• It is a noble gas

• It is a non-metal

• It is more reactive than hydrogen

What is formed when sodium reacts with water?

• Sodium carbonate

• Sodium sulfate

• Sodium chloride

• Sodium hydroxide

What is the main takeaway from understanding the activity series?

• It helps predict single replacement reactions

• It shows the color of metals

• It ranks metals by atomic number

• It lists metals by density

Which metals are typically the most reactive according to the activity series?

• Gold and silver

• Sodium and calcium

• Iron and tin

• Copper and lead