4Living and non-living things have different make-ups and need. Why do you think the elements most common in the human body are not the same as the elements most common in the Earth’s crust?Living and non-living things have different make-ups and need.
5What are the rules for writing chemical symbols? The first letter in a symbol always begins with a capital letter.If the symbol is composed of two or three letters, the second and third letters are written in lower case.Letters are always printed, not written in cursive.
7Be sure you know the 6 elements that are found in all living things. SPONCHS SulfurP PhosphorusO OxygenN NitrogenC CarbonH Hydrogen
8What is an element? An element is a pure substance that cannot be broken downinto simpler substances. Itcontains only one type of atom.The use of symbols on theperiodic table is to representthe elements that make up all matter.
14What are Organic Compounds? An organic compound is made up of carbon atoms bonded to atoms of hydrogen, producing hydrocarbons. (C-H) These hydrocarbons are then bonded with other elements. Examples are carbohydrates, proteins, lipids, and nucleic acids.
16All organic compounds share similar characteristics All organic compounds share similar characteristics. The most obvious similarity is that they all contain the "amazing element" - carbon. Most also contain hydrogen and oxygen as well. It is important to note that while all organic compounds contain carbon, not all carbon compounds are organic. Carbon dioxide is a compound that contains carbon and oxygen. However, carbon dioxide is not an organic compound. It is an inorganic compound.