Reactivity of metals 1

When metal reacts with liquid water the products are...

• metal hydroxide and oxygen gas
• metal hydroxide and hydrogen gas
• metal oxide and oxygen gas
• metal oxide and hydrogen gas

Which of the following does not react with water?

• lithium
• magnesium
• lead
• calcium

Which of the following is the most reactive in dilute acid?

• magnesium

• calcium

• aluminum

• zinc

When a metal reacts with oxygen gas, the product is ...

• metal hydroxide
• metal oxide
• metal oxide and oxygen
• metal hydroxide and hydrogen gas

Tags

NGSS.HS-PS1-1

The least reactive with oxygen in the list is

• iron

• zinc

• copper

• lead

Which one of the following metals reacts most vigorously with cold water?

• Sodium
• Magnesium
• Copper
• Zinc

Tags

NGSS.MS-PS1-2

When scrap iron is added to blue copper sulphate solution, a pinky-brown deposit is formed and a pale green solution is left above it. The pale green solution is

• iron oxide

• copper chloride

• sulphuric acid

• iron sulphate

Which metal is more reactive than calcium?

• magnesium
• potassium
• silver
• aluminum

If the metal is more reactive than the metal in the compound it competes with the less reactive metal. Therefore, it can be concluded that ...

• The less reactive metal repel the more reactive metal from its compound

• The more reactive metal bonded with the less reactive metal from its compound

• The less reactive metal pushes out or displaces the more reactive metal from its compound

• The more reactive metal pushes out or displaces the less reactive metal from its compound

What will be the reaction if a less reactive metal is added in a solution with a more reactive metal compound?

• vigorous reaction

• fizzing gas produced

• burns moderately

• no reaction