Identifying Metal and Non-Metal Ions: Tests and Outcomes

The video tutorial explains how to identify positive metal ions (cations) and negative non-metal ions in a solution through various tests. It covers the flame test for cations, where different colors indicate the presence of specific metal ions. The sodium hydroxide test is also discussed, which identifies metal ions based on the color of the precipitate formed. For negative ions, the video describes tests for carbonates, halides, and sulfates, detailing the reactions and observations needed to confirm their presence.

Which color flame indicates the presence of sodium ions in a flame test?

• Deep red

• Yellow

• Lilac

• Green

What color precipitate indicates the presence of copper ions when using the sodium hydroxide test?

• White

• Green

• Blue

• Brown

If a precipitate dissolves upon adding more sodium hydroxide, which ion is likely present?

• Iron

• Aluminium

• Magnesium

• Calcium

What test can confirm the presence of carbonate ions in a solution?

• Flame test

• Sodium hydroxide test

• Silver nitrate test

• Lime water test

Which precipitate color indicates the presence of iodide ions when using silver nitrate?

• Blue

• Yellow

• Cream

• White