Sodium selenate is a white solid. It is a strong oxidizing agent. It dissolves in water easily.
Sodium selenate is made by reacting sodium hydroxide with selenic acid.
Sodium selenate is used as a mineral supplement.
Sodium selenate is very toxic in amounts any more than a very tiny amount.
Sodium selenite
Sodium selenite is a chemical compound. Its chemical formula is NaSeO. It contains sodium and selenite ions.
Sodium selenite is a white solid. It dissolves in water. It is a weak oxidizing agent. It reacts with acids to make selenous acid. It can be oxidized by powerful oxidizing agents to make sodium selenate.
It is made by reacting sodium hydroxide with selenium dioxide
Sodium selenite is used to add a pink color to glass. It is also used in some vitamin supplements.
Eating of any more than a very tiny amount would give selenium poisoning.
Selenium acid
Selenium acid can refer to three selenium acids:
Selenium chloride
Selenium chloride can refer to either of these chemical compounds:
Selenium fluoride
Selenium fluoride can refer to either of these chemical compounds:
Selenium hexafluoride
Selenium hexafluoride, also known as selenium(VI) fluoride, is a chemical compound. Its chemical formula is SeF. It contains selenium in its +6 oxidation state. It also contains fluoride ions.
Selenium hexafluoride is a colorless gas. It is much more reactive and toxic than sulfur hexafluoride. It has a bad odor.
Selenium hexafluoride is made by heating selenium and fluorine together.
This chemical compound has no uses.
Selenium tetrafluoride
Selenium tetrafluoride, also known as selenous fluoride and selenium(IV) fluoride, is a chemical compound. Its chemical formula is SeF. It contains selenium in its +4 oxidation state. It also contains fluoride ions.
It is a colorless liquid. It hydrolyses in water giving hydrofluoric acid and selenous acid. It is used to add fluoride to other chemical compounds.
It is made by reacting selenium with a little fluorine. A lot of fluorine makes selenium hexafluoride. It can also be made by reacting sulfur tetrafluoride with selenium dioxide.
It is used to make adducts and some other chemical reactions like that.
Art Deco
Art Deco is a style of decorative art, design and architecture of the 1920s and 1930s in Europe, the United States and other countries. It was named after an international exhibition held in Paris in 1925, but there are some examples dating back to before the First World War. Art Deco followed another design style, Art Nouveau, which was influenced by organic plant-like forms.
Art Deco was one of the first styles of modern architecture. It was influenced by different styles and movements of the early 20th century, Neoclassical, Constructivism, Cubism, Modernism, and Futurism. Later Art Deco of the mid to late 1930s is also sometimes called Streamline Moderne.
One idea behind art deco architecture was to apparently streamline buildings the same way you would streamline a car for aerodynamics. The style was much more common in commercial buildings than in houses; many banks, schools, and libraries were built in this style. Most of the public buildings built by the Works Progress Administration during the Great Depression are in the Art Deco style.
Famous Art Deco buildings include the Chrysler Building in New York City and the Chicago Board of Trade Building in Chicago. Another is Bullock's Wilshire in Los Angeles. Many art deco buildings have elaborate terra cotta or murals inside them. The towers of the Golden Gate Bridge have an art deco design.
Eydie Gormé
Eydie Gormé, (Edith Gormezano, August 16, 1928 – August 10, 2013) was an American singer. Her husband, Steve Lawrence, sang with her. They were known as the duo "Steve and Eydie". Gormé herself has had some hit songs. One was "Blame it on the Bossa Nova".
Gormé was born on August 16, 1928 in The Bronx, New York City to Sephardi Jewish parents. Her father was from Sicily; her mother was from Turkey. She studied at William Howard Taft High School in New York. Gormé was married to Steve Lawrence from 1957 until her death in 2013. They had two sons.
Gormé died on August 10, 2013, six days before her 85th birthday, following a brief illness, in Las Vegas, Nevada.
The Andrews Sisters
The Andrews Sisters were an American singing group in the 1930s, the 1940s and the 1950s. They were from Minneapolis, Minnesota. Their names were LaVerne (July 6, 1911 – May 8, 1967), Maxene (January 3, 1916 – October 21, 1995) and Patty Andrews (February 16, 1918 – January 30, 2013). They broke up in 1967 after the death of LaVerne, but their music is still played over certain radio stations in the United States. The Andrews Sisters were notable for their song "The Boogie Woogie Bugle Boy". That song was covered and recorded by multiple singers over the years.
The Andrews sisters were born in Minnesota, to a Greek father and Norwegian mother. They grew up in Minneapolis.
Maxene was married to Jack Kapp from 1941 until his death in 1949. They had two adopted children. Andrews died on October 21, 1995 in Cape Cod, Massachusetts, from a heart attack, aged 79.
LaVerne was married to Louis A. Roger from 1948 until her death in 1967. Andrews died on May 8, 1967 in Brentwood, California from cancer, aged 56.
Patty was married to Martin Melcher from 1947 until they divorced in 1950. Then she was married to Melvin W. Weschler from 1951 until his death in 2010. Patty was the last survivor of the group. She died on January 30, 2013 in her home in Northridge, California from natural causes, aged 94.
Intellectual disability
Intellectual disability is also called mental retardation, intellectual developmental disability, or general learning disability. It is an illness of the brain. Intellectual disability often starts when someone is very young.
To have an intellectual disability, a person must:
There are two major types of intellectual disability.
The first is "syndromic intellectual disability". This means that the person has a syndrome that causes intellectual disability, as well as medical issues and other problems. Down syndrome and fetal alcohol syndrome are two examples of syndromic intellectual disabilities.
The second is "non-syndromic intellectual disability". This means that the intellectual disability is not a part of a syndrome.
There are three levels of intellectual disability, based on how severe a person's disability is:
Mild intellectual disability may not be noticed until a child starts school. Moderate and severe intellectual disability can be seen before a child starts school.
People with syndromic intellectual disabilities may have a "typical look." For example, the picture on the right shows facial features that many people with fetal alcohol syndrome have. People with non-syndromic intellectual disability do not look any different than a person without a disability. The symptoms of intellectual disability are all behavioral.
People with intellectual disability may have some or all of these:
Most children with intellectual disabilities can learn. However, they usually will not learn things as fast as other children. They may need to be taught things in a certain way in order to learn them and remember them.
Intellectual disability is different from dementia. In dementia, people forget things, and they lose skills they once had. People with an intellectual disability never learn those skills.
Often, no-one knows what caused a child's intellectual disability. This happens in between one-third and one-half of all cases of intellectual disability.
The top three most common causes of intellectual disability are Down syndrome, DiGeorge syndrome, and Fetal alcohol syndrome.
Genetic disorders are caused by problems with a child's genes. Children are born with these disorders.
Substances called teratogens can prevent a fetus from developing normally. If a teratogen enters a woman's body while she is pregnant, it can cause developmental problems, like intellectual disabilities.