Tuesday, March 17, 2020

Deviance in Gangs Why Join a Gang essays

Deviance in Gangs Why Join a Gang essays "Deviance in Gang Involvement: Why Join a Gang?" The problem of gang activity is not a new one facing our country. Ever since the beginnings of human existence gangs have served as a means of protection for humans. The issue of gang activity has recently, however, come to the forefront of dilemmas facing our nation. While cities like Chicago and Los Angeles are chronic gang sites, other cities such as Miami, Portland, Columbus, Dallas, and Milwaukee have only recently (within the last decade) had what they termed as a gang problem (Conly 7). Gang numbers have, without question, skyrocketed over the past 10 to 20 years. Los Angeles, for example, has recently been estimated to have as many as 90,000 gang members (Conly 14). The importance of these numbers cannot be overlooked. However, to fully understand the problems that gangs may pose to society, the term gang must be defined. Without a definition the impact of gang maliciousness on society may be lost. Throughout its history the term gang has possessed a diverse usage, being linked to outlaws in the wild west and organized crime groups among others (Decker and Van Winkle 2). Due to this, a clear-cut definition of a gang does not exist. However, most agree that a gang is a group of mostly males that engages in delinquent activities. However, the definition goes much further than that. A police officer, for example, may call a gang an on-going, organized association of three or more persons who individually or collectively engage in or have engaged in criminal activity (Conly 5). Notwithstanding, this definition is terribly obscure. That definition could include a group of boys who occasionally drink alcohol. On the other hand it could also include a group of youths that rapes and steals from old ladies. This definition obviously ranges from one extreme end of the spectrum to the other end. While images of boys dri...

Sunday, March 1, 2020

Make Mood Ring Color Change Slime

Make Mood Ring Color Change Slime Combine mood ring science and slime in this fun and easy color change chemistry project. This is thermochromic slime, which means its slime that changes colors according to temperature. Its simple to make. Color Change Slime Ingredients You can add thermochromic pigment to any of the slime recipes, so feel free to experiment. Heres how to make temperature-sensitive slime using the classic recipe: 1/4 cup white school glue (or use the transparent kind for see-through slime)1 tablespoon water3 teaspoons thermochromic pigment (find at Amazon)1/4 cup liquid starch (find at Amazon)food coloring  (optional) Youll notice thermochromic pigment tends to go from one color to a second color (e.g., blue to yellow or red to green), rather than display a whole rainbow of colors like a mood ring. You can expand the color possibilities of the slime by adding food coloring. This will give the slime a base color and will alter the appearance of the color change pigment.   Make Heat Sensitive Slime Stir together the glue and water.Sprinkle the thermochromic pigment over the mixture and stir it in. This is to help avoid clumps.Mix in food coloring, if desired.Add the liquid starch. You can stir it in, but this is the fun part, so feel free to use your hands to make the slime!  Discard any leftover liquid. When youre not playing with it, store the slime in a plastic baggie or sealed container. You can put it in the refrigerator if you plan on keeping it a long time, to discourage mold from forming. Also refrigerating the slime is a good way to get it to change color after youve warmed it with your hands.Clean up slime using warm water. If you use food coloring, remember it can stain hands and surfaces. Tips for Playing with Thermochromic Slime Drape the slime over cold drink containers or hot coffee cups.Heat the slime with a blow dryer. You can add more liquid starch to rehydrate the slime if it starts to dry out.Experiment with the response to hot packs and cold packs.Use a thermometer to see if you can determine what temperature changes the color of the pigment. How Thermochromic Slime Works The slime part of the science project works the same as usual. In the type of slime made using glue and starch or borax, the polyvinyl alcohol from the glue reacts with the borate ion from the borax or starch, forming long chains of molecules that link to each other a polymer. Water fills in the spaces in this network, giving you damp, gooey slime. The heat-sensitive color change relies on leuco dyes. There are  pigment molecules that alter their structure in response to a change in temperature. One conformation reflects/absorbs light one way, while the other conformation reflects/absorbs another way or else appears colorless. Typically these dyes change from one state into another, so you get two colors. Contrast this with liquid crystals found in mood rings, which change color as the space between components of the crystal increases/decreases. Liquid crystals display more colors, but the most common color change liquid crystal composition is inactivated by water, so it wont work with slime.