Thursday, March 19, 2020

Fake Blood With Knife Chemistry Trick

Fake Blood With Knife Chemistry Trick Heres a cool chemistry trick, perfect for Halloween! Trace a knife over your skin and leave a message that appears to be written in blood. The project works equally well with a spoon  but somehow loses impact. Try it... Bleeding Knife Materials You only need a few materials for this project, however, youll either need access to a lab for the chemicals or else you can order them online. Dull knife (we dont need real blood here)5 grams ferric chloride5 grams potassium thiocyanateWater Prepare the Magic Solutions Prepare saturated solutions. Youll know the solutions are saturated if no additional solid will dissolve in the liquid. Mix a few milliliters of water with the ferric chloride to dissolve it.Separately, mix a few milliliters of water with the potassium thiocyanate to dissolve it. Perform the Trick Coat the area of skin to be bloodied or written on with the potassium thiocyanate solution. Youll get the best effect (dripping blood) if the skin remains damp, but the color appears just fine even if you let the area dry.Dip the knife blade in the ferric chloride solution.Draw on your skin with the dampened knife blade. A deep red liquid resembling blood will appear where the two solutions mix. How It Works This chemistry trick is one form of a sensitive test for the ferric ion. A red color is produced by the reaction between the ferric ion and the thiocyanate ion. Bleeding Knife Clean-Up and Safety When youre done, rinse the blade and your skin under running water to remove the chemicals. The demonstration is safe to perform, but restrict the project to your arm or hand and avoid eyes, nose or mouth to avoid ingestion of the chemicals or irritation of mucous membranes. More Halloween Chemistry Apply chemistry for more Halloween fun. You can make a glow-in-the-dark jack-o-lantern, slime that looks like ghostly ectoplasm, or a mad scientist Halloween costume.

Tuesday, March 3, 2020

African American History and Women Timeline 1960-1969

African American History and Women Timeline 1960-1969 [Previous] [Next] 1960 Ruby Bridges integrated an all-white elementary school in New Orleans, Louisiana Ella Baker among others organized SNCC (Student Nonviolent Coordinating Committee) at Shaw University Wilma Rudolph became the first American woman to win three Olympic gold medals, and was named Athlete of the Year by the United Press 1961 CORE Freedom Rides began, with the aim of desegregating public buses many brave women and men participated (March 6) Executive Order by John F. Kennedy promoted affirmative action to abolish racial biases in hiring on projects where federal funds were involved 1962 Meredith v. Fair case argued by Constance Baker Motley. The decision allowed James Meredith to be admitted to the University of Mississippi. 1963 (September 15) Denise McNair, Carole Robertson, Addie Mae Collins, and Cynthia Weston, ages 11-14, killed in the bombing of 16th Street Church in Birmingham, Alabama Dinah Washington (Ruth Lee Jones) died (singer) 1964 (April 6) Mrs. Frankie Muse Freeman becomes the first woman on the new U.S. Commission on Civil Rights (July 2) US Civil Rights Act of 1964 became law Fannie Lou Hamer testified for the Mississippi Freedom Democratic Party before the Credentials Committee of the Democratic National Convention 1965 Viola Liuzzo murdered by Ku Klux Klan members after participating in civil rights march from Selma to Montgomery, Alabama affirmative action was required to eliminate racial bias in hiring on federally-funded projects, as defined by Executive Order 11246 Patricia Harris became the first African American woman ambassador (Luxemburg) Mary Burnett Talbert died (activist: anti-lynching, civil rights) Dorothy Dandridge died (actress, singer, dancer) Lorraine Hansberry died (playwright, wrote Raisin in the Sun) 1966 (August 14) Halle Berry born (actress) (August 30) Constance Baker Motley appointed a federal judge, the first African American woman to hold that office 1967 (June 12) in Loving v. Virginia, Supreme Court ruled that laws prohibiting interracial marriage were unconstitutional, voiding statutes still on the books in 16 states (October 13) 1965 Executive Order 11246, requiring affirmative action to eliminate racial bias in hiring on federally-funded projects, was amended to include gender-based discrimination Aretha Franklin, Queen of Soul, recorded her signature song, Respect 1968 Shirley Chisholm was the first African American woman elected to the US House of Representatives   Audre Lorde  published her first book of poems,  The First Cities. 1969 (October 29) Supreme Court ordered immediate desegregation of school districts [Previous] [Next] [1492-1699] [1700-1799] [1800-1859] [1860-1869] [1870-1899] [1900-1919] [1920-1929] [1930-1939] [1940-1949] [1950-1959] [1960-1969] [1970-1979] [1980-1989] [1990-1999] [2000-]