Group Chemistry Flashcards
An unknown sample is lighted, a few seconds later, a “pop” is heard, what is this sample?
Hydrogen gas
A match is lighted and then delighted, when it is placed into a tube of an unknown sample it relights, what is it?
Oxygen gas
A piece of litmus paper is placed into an unknown sample and turns red than white, what is this sample?
Chlorine gas
Carbonate ions + acid –>
salt + carbon dioxide + water
A substance turns limewater cloudy, what is it?
Carbonate
A sample was acidified with nitric acid and mixed with silver nitrate, a white precipitate forms, what is it?
Chloride ions
A sample was acidified with nitric acid and mixed with silver nitrate, a cream precipitate forms, what is it?
Bromine ions
A sample was acidified with nitric acid and mixed with silver nitrate, a yellow precipitate forms, what is it?
Iodine ions
A metal is mixed with sodium hydroxide, a blue precipitate forms what is it?
Copper ions
A metal is mixed with sodium hydroxide, a green precipitate forms what is it?
Iron (II) ions
A metal is mixed with sodium hydroxide, a brown precipitate forms what is it?
Iron (III) ions
A metal is mixed with sodium hydroxide, a white precipitate forms what is it?
Calcium ions, Aluminum (colorless) ions or Magnesium ions
In excess sodium hydroxide, what color will the aluminum precipitate be?
Colorless
Lithium flame is what color?
Crimson red
Sodium flame is what color?
Yellow-orange
