Test for Ions (Summary)

(a)   is the term used for any solid substance that forms after a reaction and does not redissolve in a solution.

This test tube may contain Hydrogen gas. How could we prove that it is hydrogen gas?

• Insert a glowing splint and it will reflame.

• Insert a lit splint and it will generate a popping sound.

• Insert a delivery tube to remove the gas.

• Use litmus paper.

Tags

NGSS.MS-PS1-2

What is the initial color of the resulting precipitate when sodium hydroxide is added to a solution of Fe²⁺ ions?

(a)  

Limewater, used to test for carbon dioxide contains which compound?

(a)  

A green precipitate formed when sodium hydroxide is added to an unknown solution indicates the presence of (a)  

When limewater is subjected to gas containing carbon dioxide, a solid precipitate forms. Name this precipitate that forms.

(a)  

Which gas turns damped red litmus paper blue?

(a)  

When an ion is reduced, it (a)   electron/s.

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

In testing for carbon dioxide, an insoluble solid forms in a solution. What is the color of this insoluble solid?

(a)  

Many ions can be detected in solution by adding another solution and observing the colour of the solid formed. What term is given to a solid formed in a reaction between two solutions?

• Filtrate

• Precipitate

• Residue

• Solution