Chemistry - Testing/Identifying products & Reactants

Glowing splint held in a test tube and is relit

Oxygen is present

Lit splint placed in a test tube and squeaky pop is heard

Hydrogen is present

Bubbled through limewater and a cloudy white Precipitate forms

Carbon Dioxide is present

Damp litmus paper held in test tube and is bleached

Chlorine is present

Flame test goes Red

Lithium, Li⁺, is present

Flame test goes Yellow

Sodium, Na⁺, is present

Flame test goes Lilac

Potassium, K⁺, is present

Flame test goes Orange-Red

Calcium, Ca²⁺, is present

Flame test goes Green-Blue

Copper, Cu²⁺, is present

Dilute sodium hydroxide solution reacts with metal ion solution to form a Green Precipitate

Iron (II), Fe²⁺, is present

Dilute sodium hydroxide solution reacts with metal ion solution to form an Orange-Brown Precipitate

Iron (III), Fe³⁺, is present

Dilute Sodium Hydroxide solution reacts with metal ion solution to form a Blue Precipitate

Copper (II), Cu²⁺, is present

Dilute Sodium Hydroxide solution reacts with metal ion solution to form a White Precipitate

Calcium, Ca²⁺ or Zinc, Zn²⁺, is present

Reacted with a dilute acid to form a gas, gas then tested to be Carbon Dioxide

Carbonate ions, CO₃^2-, is present

Reacted with a few drops of dilute Hydrochloric Acid and a few drops of Barium Chloride to form an insoluble White Precipitate

Sulfate ions, SO₄^2-, is present

Silver Ions react with Halide ions to form White Precipitate

Chloride, Cl^-

Silver Ions react with Halide ions to form Cream Precipitate

Bromide, Br^-

Silver Ions react with Halide ions to form Yellow Precipitate

Iodide, I^-