Properties of water equal to that of the hydrogen ion (), which gives a pH of 7 at 25 °C. Action of water on rock over long periods of time typically leads to weathering and water erosion, physical processes that convert solid rocks and minerals into soil and sediment, but under some conditions chemical reactions with water occur as well, resulting in metasomatism or mineral hydration, a type of chemical alteration of a rock which produces clay minerals. It also occurs when Portland cement hardens. Water ice can form clathrate compounds, known as clathrate hydrates, with a variety of small molecules that can
What the Water Gave Me (painting) What the Water Gave Me (painting) What the Water Gave Me ("Lo que el agua me dio" in Spanish) is an oil painting by Frida Kahlo that was completed in 1938. It is sometimes referred to as What I Saw in the Water. Frida Kahlo’s "What the Water Gave Me" was her biography. As the scholar, Natascha Steed, points out, "her paintings were all very honest and she never portrayed herself as being more or less beautiful than she actually was." With this piece she reflected on her life. Kahlo released her unconscious mind through the use of what seems