The Difference Between Metals and Nonmetals

The Difference Between Metals and Nonmetals Elements may be classified as either metals or nonmetals based on their properties. Much of the time, you can tell an element is a metal simply by looking at its metallic luster, but this isnt the only distinction between these two general groups of elements. Metals Most elements are metals. This includes the alkali metals, alkaline earth metals, transition metals, lanthanides, and actinides. On the periodic table, metals are separated from nonmetals by a zig-zag line stepping through carbon, phosphorus, selenium, iodine, and radon. These elements and those to the right of them are nonmetals. Elements just to the left of the line may be termed metalloids or semimetals and have properties intermediate between those of the metals and nonmetals. The physical and chemical properties of the metals and nonmetals may be used to tell them apart. Metal Physical Properties: Lustrous (shiny)Good conductors of heat and electricityHigh melting pointHigh density (heavy for their size)Malleable (can be hammered)Ductile (can be drawn into wires)Usually solid at room temperature (an exception is mercury)Opaque as a thin sheet (cant see through metals)Metals are sonorous or make a bell-like sound when struck Metal Chemical Properties: Have 1-3 electrons in the outer shell of each metal atom and lose electrons readilyCorrode easily (e.g., damaged by oxidation such as tarnish or rust)Lose electrons easilyForm oxides that are basicFave lower electronegativitiesAre good reducing agents Metal: copper (left); metalloid: arsenic (center); and non-metal: sulfur (right). Matt Meadows, Getty Images Nonmetals Nonmetals, with the exception of hydrogen, are located on the right side of the periodic table. Elements that are nonmetals are hydrogen, carbon, nitrogen, phosphorus, oxygen, sulfur, selenium, all of the halogens, and the noble gases. Nonmetal Physical Properties: Not lustrous (dull appearance)Poor conductors of heat and electricityNonductile solidsBrittle solidsMay be solids, liquids or gases at room temperatureTransparent as a thin sheetNonmetals are not sonorous Nonmetal Chemical Properties: Usually have 4-8 electrons in their outer shellReadily gain or share valence electronsForm oxides that are acidicHave higher electronegativitiesAre good oxidizing agents Both metals and nonmetals take different forms (allotropes), which have different appearances and properties from each other. For example, graphite and diamond are two allotropes of the nonmetal carbon, while ferrite and austenite are two allotropes of iron. While nonmetals may have an allotrope that appears metallic, all of the allotropes of metals look like what we think of as a metal (lustrous, shiny).

How Women Abolitionists Fought Slavery

How Women Abolitionists Fought Slavery Abolitionist was the word used in the 19th century for those who worked to abolish the institution of slavery. Women were quite active in the abolitionist movement, at a time when women were, in general, not active in the public sphere. The presence of women in the abolitionist movement was considered by many to be scandalous- not just because of the issue itself, which was not universally supported even in states that had abolished slavery within their borders, but because these activists were women, and the dominant expectation of the proper place for women was in the domestic, not the public, sphere. Nevertheless, the abolitionist movement attracted quite a few women to its active ranks. White women came out of their domestic sphere to work against the enslavement of others. Black women spoke from their experience, bringing their story to audiences to elicit empathy and action. Black Women Abolitionists The two most famous black women abolitionists were Sojourner Truth and Harriet Tubman. Both were well-known in their time and are still the most famous of the black women who worked against slavery. Frances Ellen Watkins Harper and Maria W. Stewart are not as well known, but both were respected writers and activists. Harriet Jacobs wrote a memoir that was important as a story of what women went through during slavery, and brought the conditions of slavery to the attention of a wider audience. Sarah Mapps Douglass, part of the free African American community in Philadelphia, was an educator who also worked in the antislavery movement. Charlotte Forten Grimkà © was also part of the Philadelphia free African American community involved with the Philadelphia Female Anti-Slavery Society.   Other African American women who were active abolitionists included Ellen Craft, the Edmonson sisters (Mary and Emily), Sarah Harris Fayerweather, Charlotte Forten, Margaretta Forten, Susan Forten, Elizabeth Freeman (Mumbet), Eliza Ann Garner, Harriet Ann Jacobs,  Mary Meachum, Anna Murray-Douglass (first wife of Frederick Douglass), Susan Paul,  Harriet Forten Purvis, Mary Ellen Pleasant, Caroline Remond Putnam, Sarah Parker Remond, Josephine St. Pierre Ruffin, and Mary Ann Shadd. White Women Abolitionists More white women than black women were prominent in the abolitionist movement, for a variety of reasons: Although the movement of all women was restricted by social convention, white women had more freedom than black women to move about.White women were more likely to have the income to support themselves while doing abolitionist work.Black women were, after the Fugitive Slave Act and the Dred Scott Supreme Court decision, at risk of capture and transport to the South if someone alleged (rightly or wrongly) that they were escaped slaves.White women were generally better-educated than black women were (even though not at all on a par with the education of white men), including in formal oratory skills popular as a topic in education at the time. White women abolitionists were often connected with liberal religions like the Quakers, Unitarians, and Universalists, which taught the spiritual equality of all souls. Many white women who were abolitionists were married to (white) male abolitionists or came from abolitionist families, though some, like the Grimke sisters, rejected the ideas of their families. Key white women who worked for the abolition of slavery, helping African American women navigate an unjust system (in alphabetical order, with links to find more about each): Louisa May AlcottSusan B. AnthonyAntoinette Brown BlackwellElizabeth BlackwellEdnah Dow CheneyLydia Maria ChildLucy ColmanPaulina Kellogg Wright DavisMary Baker EddyMargaret FullerAngelina Grimke and her sister, Sarah GrimkeJulia Ward HoweMary LivermoreLucretia MottElizabeth Palmer PeabodyAmy Kirby PostElizabeth Cady StantonLucy StoneHarriet Beecher StoweMary Edwards WalkerVictoria WoodhullMarie Zakrzewska More white women abolitionists include: Elizabeth Buffum Chace, Elizabeth Margaret Chandler, Maria Weston Chapman, Hannah Tracy Cutler, Anna Elizabeth Dickinson, Eliza Farnham, Elizabeth Lee Cabot Follen, Abby Kelley Foster,  Matilda Joslyn Gage,  Josephine White Griffing, Laura Smith Haviland, Emily Howland, Jane Elizabeth Jones, Graceanna Lewis, Maria White Lowell, Abigail Mott, Ann Preston, Laura Spelman Rockefeller, Elizabeth Smith Miller,  Caroline Severance,  Ann Carroll Fitzhugh Smith, Angeline Stickney, Eliza Sproat Turner,  Martha Coffin Wright.