spatula with small portion of calcium carbonate black background

coal hydrated hcl potassium salt acid baking electrolyte dry white chemistry diatomite ammonium chemical dextrose powder chloride citrate nitrate lime soil carbonate hydroxide molybdate substance citric ash flavor soda chlorine compound antioxidant sulfide phosphate natural reagent anhydride fertilizer descaling pharmaceutical monohydrate sodium talcum strontium calcium agricultural spatula small portion carbonate isolated black background