Ion formation and metal reactivity

Metal A is more reactive than Metal B. The following displacement reaction takes place.

Metal A + Metal B in compound ---> Metal B + Metal A in compound.

True or False.

• True

• False

Tags

NGSS.MS-PS1-5

NGSS.MS-PS1-2

A more reactive metal will displace a less reactive metal from a metal compound. Which metal is more reactive - copper or iron?

• copper

• iron

Acid + Metal --> ?

• Salt + Water
• Salt + Hydrogen
• Salt
• Hydrogen

Iron + Hydrochloric acid --> ?

• iron(II) sulfate + water

• iron + hydrogen

• iron(II) chloride + hydrogen

• iron(II) chloride + water

Which equation correctly shows the displacement of copper from copper(II) sulfate by zinc?

• copper + zinc sulfate --> copper(II) sulfate + zinc

• zinc sulfate + copper --> copper(II) sulfate + zinc

• copper(II) sulfate + zinc --> zinc sulfate + copper

• copper(II) sulfate + zinc --> zinc sulfate + water

A copper coil is placed inside a solution of silver nitrate. What would you expect to see after 5 minutes? Choose 2 options.

• There is no visible change because no displacement reaction took place. Copper, being less reactive than silver, cannot displace silver from silver nitrate.

• 
• 
• Silver crystals were formed on copper coil, because copper (being more reactive than silver) displaced silver from silver nitrate.

An object becomes positively charged by...

• gaining negative charges.

• losing negative charges.

• gaining positive charges.

• losing positive charged.

Which of these is TRUE about nonmetals?

• They are not reactive.

• They all have noble gas configurations.

• They are found on the left side of the periodic table.

• They easily gain electrons to attain a stable outer electron configuration.

Oxygen gains two electrons to form what kind of ion?

• -1 anion

• -2 anion

• +1 cation

• +2 cation

Cations are...

• Positive

• Negative

• Neutral

• Purring