Understanding Combining Powers and Valency

What analogy is used to explain the concept of combining powers in compounds?

• Building a house

• Planting a tree

• Baking a cake

• Driving a car

What happens if you combine one carbon atom with two oxygen atoms?

• Carbon monoxide is formed

• Water is formed

• Carbon dioxide is formed

• Ozone is formed

Which column in the periodic table is associated with a valency of 1?

• Column 1

• Column 2

• Column 3

• Column 4

How is the valency of transition metals typically indicated?

• By using Arabic numerals

• By using Greek letters

• By using Roman numerals

• By using colors

What charge does an oxide ion typically have?

• Positive 2

• Negative 2

• Positive 1

• Negative 1

What is the valency of a nitrate ion?

• 4

• 3

• 2

• 1

What is the correct formula for sodium fluoride?

• NaF

• NaCl

• NaO

• NaS

What is the combining power of sodium in sodium sulfide?

• 1

• 3

• 4

• 2

What is the charge of the hydroxide ion?

• Positive 2

• Negative 2

• Negative 1

• Positive 1

What is the correct formula for aluminum hydroxide?

• AlOH

• Al(OH)3

• Al(OH)2

• AlO2H