Download - Atoms and Elements
Atom
• Define:
• Parts of an atom:
The basic unit of matter
•Nucleus - Center•Protons - positive•Neurons - neutral
•Electrons - negative
Define: • A substance made up of only 1 kind of
atom.
Periodic table:•A chart that organizes elements by similar properties•in order of increasing atomic number
Element
Periodic Table
Closer look!
Molecules
Define:Two or more atoms of the same element linked together
Compounds
• Define – a substance made of the atoms of two
or more different elements
• Examples -Water = H2O or Salt = NaCl
Metals
• Elements are classified by their _________________,
• About ¼ of elements are nonmetals.
Properties of Metals
• Luster• Ductile• Malleability• Conductor• Insulator
Luster
• What is luster?
• Why is gold used in jewelry?
Ductile
Definition:
Example of an element that is ductile:
Malleable
• Define:
• What is an example of a malleable element?
Conductors and Insulators
• Metals ________ , or transfer, electricity or heat.
• Non metals like wood, glass & plastics are _____________ and do not conduct electricity. – What are some everyday examples of
Insulators?
Brain Pop
• Brain pop metals• http://genesismission.jpl.nasa.gov/
educate/scimodule/UnderElem/UnderElem_pdf/TeachText.pdf
• http://www.chem4kids.com/files/elem_pertable.html
• http://library.thinkquest.org/3659/pertable/nonmetal.html