Learning Task No. 3 in the blanks by describing the words dex Write your answer in your notebook. elements letters atomic number carbon mixtures compound symbols carbon dioxide pure Periodic Table properties cannot be separated by physical or chemical means. 2.Slements are abbreviated with which consist of one or 3. Elements are organized on the according to their * Two or more elements chemically combined make up a is an 5. is an example of an element and example of a compound 6. Elements and compounds are called substances because they have a unique set of chemical and physical​