CLS9_U5_U6_U7

The metal lithium is missing from the reactivity list, suggest where it should be placed.

• Not included in the reactivity list
• In the middle of the reactivity list
• Near the top of the reactivity list

• At the bottom of the reactivity list

Platinum is a precious metal that is used for jewelry. Platinum stays shiny for a long time. Where in the list would you place the metal platinum?

• Near the bottom of the list

• In the middle

• Not on the List

• Skibidi

Write the formula for the reaction between zinc and sulfuric acid

• Zn + H2SO4 -> ZnSO4 + H2
• Zn + H2O -> ZnO + H2
• Zn + H2SO3 -> ZnSO3 + H2
• Zn + HCl -> ZnCl2 + H2

Write the word equation for the reaction between magnesium and oxygen.

• Magnesium + Oxygen -> Magnesium Sulfate
• Magnesium + Oxygen -> Magnesium Dioxide
• Magnesium + Oxygen -> Magnesium Oxide
• Magnesium + Oxygen -> Magnesium Hydroxide

Which is the more reactive metal: zinc or copper?

• silver
• zinc
• gold
• iron

Can zinc displace the copper in copper sulfate?

• No
• Yes
• Sometimes
• Maybe

Which is more reactive – silver or magnesium?

• Magnesium
• Copper
• Aluminum
• Gold

Can silver displace the magnesium in magnesium sulfate?

• Yes
• Maybe
• Sometimes
• No

Sodium burns brightly when heated, and forms an oxide. Does magnesium react more vigorously or less vigorously than sodium?

• more vigorously
• equally vigorously
• not at all
• less vigorously

Copper reacts very slowly when heated. Suggest how silver reacts when heated.

• More reactive than copper
• Forms a solid mass when heated
• Highly explosive when heated
• Less reactive than copper