Single replacement reactions and the activity series
Grade 10 Science Worksheet - Challenge Me
Circle the best answer, or write your answer on the line.
In Cu + 2 AgNO₃ → Cu(NO₃)₂ + 2 Ag, 6 silver atoms form on a wire. How many copper atoms reacted, Ari?
In Cu + 2 AgNO₃ → Cu(NO₃)₂ + 2 Ag, 10 silver atoms form on a wire. How many copper atoms reacted, Bo?
In Cu + 2 AgNO₃ → Cu(NO₃)₂ + 2 Ag, 8 silver atoms form on a wire. How many copper atoms reacted, Esme?
In Cu + 2 Ag⁺ → Cu²⁺ + 2 Ag, why are two silver ions needed, Kira?
- Silver atoms travel in pairs in solution
- Cu gives 2 electrons; each Ag⁺ takes 1
- Copper has two outer shells
Copper in silver nitrate solution turns the liquid blue. Why, Luz?
- Nitrate breaks down into a blue dye
- Blue Cu²⁺ ions enter the solution
- Silver ions in it turn blue
Milo says copper will replace zinc in zinc sulfate solution. Agree or disagree?
- Agree: copper is the heavier metal
- Agree: copper is above zinc
- Disagree: copper is below zinc
Noah says silver will give hydrogen bubbles in dilute hydrochloric acid. Agree or disagree?
- Disagree: silver is below hydrogen
- Agree: silver is above hydrogen
- Agree: acids dissolve any metal they touch
Pia says if zinc replaces copper, copper must also replace zinc. Agree or disagree?
- Disagree: it runs one way
- Agree: the swap works both ways
- Agree: the two metals are equally active
Read this first
Metal-in-solution results (example data)
metal in X nitrate in Y nitrate in Z nitrate X not tested coating forms no change Y no change not tested no change Z coating forms coating forms not tested Using the results, which metal is the most active, Ren?
- X
- Y
- Z
Using the results, why does Y show no change in either solution, Zee?
- Y is the most active of the three
- Y is the least active of the three
- Y did not touch either of the solutions