Reactivity and Solutions

In this reactivity series, which of the following is the most reactive element?

• Gold

• Calcium

• Zinc

• Potassium

Tags

NGSS.HS-PS1-2

In this reactivity series, which of the following is the least reactive element?

• Gold

• Calcium

• Zinc

• Potassium

True or False:

Magnesium is more reactive than silver.

• True

• False

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

True or False:

Lead is more reactive than iron.

• True

• False

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

What type of reaction is shown by this word equation?

lead nitrate + sodium → sodium nitrate + lead

• Decomposition

• Thermite

• Displacement

• Neutralisation

In a displacement reaction, it is the ____________ reactive metal that is displaced from a compound.

• Heaviest

• Least

• Most

• Worst

In the following reaction, which metal has been displaced?

copper sulfate + magnesium → magnesium sulfate + copper

• magnesium

• copper

• sulfate

Complete the word equation:

lithium + silver nitrate →

• lithium + silver nitrate

• lithium + silver nitrite

• silver + lithium nitrate

• silver + lithium nitrite

Complete the word equation:

lead + calcium sulfate →

• lead + calcium sulfate

• lead + calcium sulfide

• calcium + lead sulfate

• calcium + lead sulfide

Use the following observations to select the correct reactivity series (highest to lowest).

calcium + water: slow

sodium + water: fast

calcium + dilute acid: very fast

gold + dilute acid: no reaction

aluminium + dilute acid: fast

• calcium, sodium, aluminium, gold

• sodium, calcium, aluminium, gold

• sodium, aluminium, calcium, gold

• gold, aluminium, calcium, sodium

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

NGSS.HS-PS1-5