ATOMS ELEMENTS PERIODIC TABLE MOLECULES COMPOUNDS.

14
ATOMS ELEMENTS PERIODIC TABLE MOLECULES COMPOUNDS

Transcript of ATOMS ELEMENTS PERIODIC TABLE MOLECULES COMPOUNDS.

Page 1: ATOMS ELEMENTS PERIODIC TABLE MOLECULES COMPOUNDS.

ATOMS ELEMENTS PERIODIC TABLE MOLECULES COMPOUNDS

Page 2: ATOMS ELEMENTS PERIODIC TABLE MOLECULES COMPOUNDS.

atom

• the smallest component of an element having the chemical properties of the element, consisting of a nucleus containing combinations of neutrons and protons and one or more electrons bound to the nucleus by electrical attraction; the number of protons determines the identity of the element.

Page 3: ATOMS ELEMENTS PERIODIC TABLE MOLECULES COMPOUNDS.

Atom-

lithium

Page 4: ATOMS ELEMENTS PERIODIC TABLE MOLECULES COMPOUNDS.

ATOMS

Page 5: ATOMS ELEMENTS PERIODIC TABLE MOLECULES COMPOUNDS.

Element

• Chemistry. one of a class of substances that cannot be separated into simpler substances by chemical means. Listed on the periodic table of elements.

Page 6: ATOMS ELEMENTS PERIODIC TABLE MOLECULES COMPOUNDS.

PERIODIC TABLE

• a table illustrating the periodic system, in which the chemical elements, formerly arranged in the order of their atomic weights and now according to their atomic numbers, are shown in related groups.

Page 7: ATOMS ELEMENTS PERIODIC TABLE MOLECULES COMPOUNDS.

PERIODIC TABLE

Page 8: ATOMS ELEMENTS PERIODIC TABLE MOLECULES COMPOUNDS.

PERIODIC TABLE

• http://www.uky.edu/Projects/Chemcomics/index.html

Page 9: ATOMS ELEMENTS PERIODIC TABLE MOLECULES COMPOUNDS.

TRENDS ON THE PERIODIC TABLE

GOING ACROSS-- INCREASING NUMBER OF ELECTIONSGOING DOWN INCREASING NUMBER OF ELECTRON SHELLS & INCREASING RADIUS (LARGER)GROUPS HAVE SIMILAR PROPERTIES

Page 10: ATOMS ELEMENTS PERIODIC TABLE MOLECULES COMPOUNDS.

MOLECULES

• Chemistry, Physics. the smallest physical unit of an element or compound, consisting of one or more like atoms in an element and two or more different atoms in a compound.

Page 11: ATOMS ELEMENTS PERIODIC TABLE MOLECULES COMPOUNDS.

COMPOUNDS

• A compound is a substance formed when two or more chemical elements are chemically bonded together.

• Two types of chemical bonds common in compounds are covalent bonds and ionic bonds.

Page 12: ATOMS ELEMENTS PERIODIC TABLE MOLECULES COMPOUNDS.

COMPOUNDS• What is the difference between a compound and a molecule?• A molecule is formed when two or more atoms join together chemically.

A compound is a molecule that contains at least two different elements. All compounds are molecules but not all molecules are compounds.

• Molecular hydrogen (H2), molecular oxygen (O2) and molecular nitrogen (N2) are not compounds because each is composed of a single element. Water (H2O), carbon dioxide (CO2) and methane (CH4) are compounds because each is made from more than one element. The smallest bit of each of these substances would be referred to as a molecule. For example, a single molecule of molecular hydrogen is made from two atoms of hydrogen while a single molecule of water is made from two atoms of hydrogen and one atom of oxygen.

Page 13: ATOMS ELEMENTS PERIODIC TABLE MOLECULES COMPOUNDS.

COMPOUND OR MOLECULE?

Page 14: ATOMS ELEMENTS PERIODIC TABLE MOLECULES COMPOUNDS.

COMPOUND OR MOLECULE?