Ionic Solutions and Precipitates LAB

What is the purpose of not naming the chemicals directly in the video?

• To encourage students to practice chemical naming

• To avoid confusion with chemical formulas

• To make the video shorter

• To prevent misuse of chemicals

What type of plate is used for the experiment?

• A shallow wool plate

• A flat tray

• A petri dish

• A deep well plate

Why was the number of drops increased from two to 10-15?

• To make the reactions more visible

• Due to a mistake in the initial setup

• To use up excess chemicals

• To speed up the reaction process

Which chemical was added first across the rows?

• Na2CO3

• KI

• NaOH

• Na3PO4

What is observed when two aqueous solutions are mixed and form a cloudy mixture?

• Temperature increase

• Precipitate

• Evaporation

• Color change

What is the correct formula for Lead(II) nitrate used in the experiment?

• PbN2O6

• Pb(NO3)2

• Pb2NO3

• PbNO3

Which solution was added down the columns last?

• PbNO32

• CuSO4

• MgSO4

• AgNO3

What is the term used to describe the solid formed when two solutions are mixed?

• Precipitate

• Solute

• Solvent

• Reactant

What visual change is noted when Na2CO3 is added across the row?

• Turns pink

• No change

• Bubbles form

• Becomes cloudy

Tags

NGSS.MS-PS1-2

Name the 8 compounds used in this experiment.