molecules and formulas
DESCRIPTION
Mr. Dunnum. Molecules and Formulas. What is a formula?. The formula tells you which elements make up a compound as well as how many atoms of each element are present. - PowerPoint PPT PresentationTRANSCRIPT
MOLECULES AND FORMULAS
Mr. Dunnum
WHAT IS A FORMULA?• The formula tells you which elements
make up a compound as well as how many atoms of each element are present.
• The subscript number written below and to the right of each element’s symbol tells you how many atoms of that element exist in one unit of that compound.
WHAT IS A MOLECULE
• The smallest
complete unit of a
compound
• Often times they are
showed like this
• 1 H2O
• 3 NaCl
CHEMICAL FORMULAINDICATES THE ELEMENTS IN A
COMPOUND
WaterH2O
Carbon DioxideCO2
NitroglycerinC3H5(NO3)3
Sulfuric AcidH2SO4
CaffeineC8H10N4O2
AmmoniaNH3
Sugar C6H12O6
Rubbing Alcohol C3H7OH
Table Salt NaCl
ELEMENTS FOR THE DAY!
Scandium Sc
Yttrium Y
Lawrencium La
Actinium Ac
Titanium Ti
Zirconium Zr
Hafnium Hf
Tantalum Ta