Solubility: A Lab Of Chemicals, Chromatography, And Crime
Solubility as a Property of Matter
A Lab of Chemicals, Chromatography, and Crime!
Chemistry is a natural science that deals with the composition of matter and the changes it undergoes. At crime scenes, investigators often find unknown materials that need to be identified. If an unknown material is a mixture, an investigator may want to know one or two things about it: What are the ingredients of the mixture? Is the mixture found at the scene the same as a known mixture?
A mixture is a collection of two or more pure substances that are physically close together. You are familiar with a variety of mixtures. For example, a soft drink is a mixture of water, sugar, artificial colors, caffeine, and flavors. Other mixtures include foods, …show more content…
Most substances have a specific solubility (amount of solute that dissolves) in water at a given temperature. Solubility is defined as the ability of a substance to dissolve in another substance. Solutions are mixtures containing a solute (substance being dissolved) and a solvent (material that dissolves another substance). Solutes and solvents can be solids, liquids, or gases. The most common solutions, however, have liquid solvents, particularly water. There are many solutions that students encounter regularly, such as apple juice, soda, carbonated water, or salt water, in which the main solvent is good ol' …show more content…
Sternman was a very unpopular certified public accountant who had managed to make enemies of everyone he knew. Even his own family found him to be an unbearable bully who lied, cheated, and stole from his estranged wife and grown daughter. Mr. Sternman had scheduled a meeting with his new attorney, Ms. Justice, on that afternoon that he was found dead in his apartment!
After being exiled from his home a year ago, no one ever visited him. He hated house cleaning and his apartment was a shamble. On the day that his body was found, one scene in the apartment was notable because it was so unusual. The dining room table was laid out with a fresh tablecloth and fancy candle holders. Two cups of coffee, two napkins, and a plate of cookies were on the table. One of the napkins and a coffee cup contained a smear of lipstick. The other coffee cup had the dried remains of a white crystal on the rim. In his hand was the remnant of a note with “We must meet…” written in
A Lab of Chemicals, Chromatography, and Crime!
Chemistry is a natural science that deals with the composition of matter and the changes it undergoes. At crime scenes, investigators often find unknown materials that need to be identified. If an unknown material is a mixture, an investigator may want to know one or two things about it: What are the ingredients of the mixture? Is the mixture found at the scene the same as a known mixture?
A mixture is a collection of two or more pure substances that are physically close together. You are familiar with a variety of mixtures. For example, a soft drink is a mixture of water, sugar, artificial colors, caffeine, and flavors. Other mixtures include foods, …show more content…
Most substances have a specific solubility (amount of solute that dissolves) in water at a given temperature. Solubility is defined as the ability of a substance to dissolve in another substance. Solutions are mixtures containing a solute (substance being dissolved) and a solvent (material that dissolves another substance). Solutes and solvents can be solids, liquids, or gases. The most common solutions, however, have liquid solvents, particularly water. There are many solutions that students encounter regularly, such as apple juice, soda, carbonated water, or salt water, in which the main solvent is good ol' …show more content…
Sternman was a very unpopular certified public accountant who had managed to make enemies of everyone he knew. Even his own family found him to be an unbearable bully who lied, cheated, and stole from his estranged wife and grown daughter. Mr. Sternman had scheduled a meeting with his new attorney, Ms. Justice, on that afternoon that he was found dead in his apartment!
After being exiled from his home a year ago, no one ever visited him. He hated house cleaning and his apartment was a shamble. On the day that his body was found, one scene in the apartment was notable because it was so unusual. The dining room table was laid out with a fresh tablecloth and fancy candle holders. Two cups of coffee, two napkins, and a plate of cookies were on the table. One of the napkins and a coffee cup contained a smear of lipstick. The other coffee cup had the dried remains of a white crystal on the rim. In his hand was the remnant of a note with “We must meet…” written in