alkaline+air
51alkali metal — Chem. any of the group of univalent metals including potassium, sodium, lithium, rubidium, cesium, and francium, whose hydroxides are alkalis. [1880 85] * * * Any of the six chemical elements in the leftmost group of the periodic table (lithium,… …
52test — 1. To prove; to try a substance; to determine the chemical nature of a substance by means of reagents. 2. A method of examination, as to determine the presence or absence of a definite disease or of some substance in any of the fluids, tissues,… …
53Ytterbium — Yb redirects here. For the unit of information, see Yottabit. thulium ← ytterbium → lutetium ↑ Yb ↓ No …
54Copper — For other uses, see Copper (disambiguation) …
55Glossary of fuel cell terms — The Glossary of fuel cell terms lists the definitions of many terms used within the fuel cell industry. The terms in this glossary may be used by fuel cell industry associations, in education material and fuel cell codes and standards to name but …
56stain — 1. To discolor. 2. To color; to dye. 3. A discoloration. 4. A dye used in histologic and bacteriologic technique. 5. A procedure in which a dye or combination of dyes and reagents is used to color the constituents of cells and tissues. For… …
57Hafnium — lutetium ← hafnium → tantalum Zr ↑ Hf ↓ Rf …
58Neodymium — praseodymium ← neodymium → promethium ↑ Nd ↓ U …
59Rubidium — krypton ← rubidium → strontium K ↑ Rb ↓ …
60Silver — This article is about the chemical element. For the color, see Silver (color). For other uses, see Silver (disambiguation). palladium ← silver → cadmium …
