Anions (halide, sulfate, and carbonate ions ... dilute acid. Some metal cations have distinctive colours when held in a blue Bunsen burner flame. A nichrome wire is used to hold the test solid ...

Hydrogen carbonate, also called bicarbonate, is an acid salt formed from carbonic acid and contains hydrogen carbonate ions. Most hydrogen carbonates ... Therefore, this characteristic is often used ...

Hollow-cone morphologies have been formed on carbonate crystals of calcite, aragonite and vaterite through molecular control with an organic acid polymer ... approach was used in this study ...