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www.reference.com/article/common-safety-sign-symbols-f487a6c296949701

Safety symbols available from Osha.gov include the skull and crossbones symbol, flame symbol, health hazard symbol and corrosion symbol, according to the Occupational Safety & Health Administration. The symbols contain black and white representations of various dangers. For example, the flame symbol

www.reference.com/article/chemistry-8c236b6e957ea466

Chemistry is the scientific study of the composition, properties and interactions of organic and inorganic matter. Chemistry is commonly used in fields of science and medicine, according to About.com.

www.reference.com/article/co-chemistry-40857c0692f7a342

CO is the molecular formula for carbon monoxide. Carbon monoxide is a toxic gas, and continuous exposure to high concentrations of carbon monoxide can be fatal to both humans and animals.

www.reference.com/article/chemistry-important-2eebcf541dc4dd8

Chemistry is important because it explains life and industrial processes, such as cooking, medicine, cleaning and environmental issues. Knowledge of chemistry helps people to make decisions that affect their lives, such as safe use of household chemicals. Chemistry is also important because everythi

www.reference.com/science/base-chemistry-5f63b47397982bb8

According to Anne Helmenstine, Ph.D of About: Chemistry, bases are the chemical opposite of acids. Bases react with acids to form salts and water.

www.reference.com/article/tattoos-symbolize-protection-safety-ff0d45a94def671c

Anchor tattoos are a sign of safety and also serve as a symbol for hope. Angel tattoos symbolize protection, since the image is often used to indicate that the tattoo wearer believes he has a guardian angel.

www.reference.com/article/element-chemistry-36cd8d35bb18a314

An element in chemistry is described as the simplest form of a substance that cannot be broken down using chemical methods. Elements are composed of atoms with the same number of protons.

www.reference.com/science/closed-system-chemistry-5c5261ef89952069

A closed system in chemistry refers to a type of a thermodynamic system in which mass is conserved inside the system but energy enters and leaves the system freely. When both energy and matter can be exchanged between the system and its surroundings, the system is known as an open system.

www.reference.com/science/meaning-industrial-chemistry-e30e7b11e853c7e0

Industrial chemistry is concerned with using chemical and physical processes to transform raw materials into products that are beneficial to humanity. This includes the manufacture of basic chemicals to produce products for various industries. Industrial chemistry can be thought of as an industry th

www.reference.com/science/father-chemistry-daf839615ce38b9d

While "father of chemistry" is, of course, subjective, one individual with a claim to the title is Dimitri Mendeleev. Born in Siberia in 1834, Mendeleev devised a predictive model for chemistry known as the periodic table. This model was validated when it successfully predicted the properties of the