Sorting Elements, Compounds, and Mixtures How can we tell the difference?
Feb 22, 2016
Sorting Elements, Compounds, and Mixtures
How can we tell the difference?
Make an organizer!• Label your paper at the top: Organizer: Sorting ECM• Make four columns like this: Labels Elements Compounds Mixtures
What to do:
• In the first column write a label for each set of facts.
• Then write the given facts in the correct columns.
• Get ready for the first one!
Label: Notation?
• Symbols• Formulas• Lists
Label: Notation?
• Symbols E• Formulas C• Lists M
Label: Composition
• A variety of different molecules or elements• The same kind of atoms• The same kind of molecules
Composition:
• A variety of different molecules or elements M• The same kind of atoms E• The same kind of molecules C
Composition?
• Fixed proportions/ratios• Variable amounts• NA
Composition?
• Fixed proportions/ratios C• Variable amounts M• NA E
Pure or not?
• Pure• Not pure
Pure or not?
• Pure E & C• Not pure M
How combined?
• Chemically combined (bonded)• NA• Physically combined
How combined?
• Chemically combined (bonded) C• NA E• Physically combined M
Properties
• Components keep their identities when joined• Components lose their identities when joined• NA
Properties
• Components don’t lose their identity when joined M
• Components do lose their identity when joined C
• NA E
How are they broken down?
• Easily separated: Sorting, distillation, filtering, evaporation, centrifuge
• Cannot be broken down
• Difficult to break down: Requires lots of energy such as adding heat or electricity
How are they broken down?
• Easily separated: Sorting, distillation, filtering, evaporation, centrifuge M
• Cannot be broken down E
• Difficult to break down: Requires lots of energy such as adding heat or electricity C
Examples
Examples
compound
element
mixture
More examples
More examples