PROPERTIES OF MATTER

MATTER

• Anything that takes up space and has mass.
• All matter is made up of atoms

ATOMS

• The smallest units of a chemical element.

ELEMENT

• Each element is made of only one kind of at one atoms.
• There are about 120 elements.
• Examples:
• Hydrogen (H2)
• Oxygen (O2)
• Carbon (C)
• Nitrogen (N2)
• Iron (FE)
• Aluminum (Al)
• Gold (Au)
• Calcium (Ca)

PERIODIC TABLE

• A list of all of the chemical elements that exist in the universe. (That have been discovered by human so far.)

MOLECURE

• Forced when 2 or more atoms join together.
• Example:
• Water( H2O
• Salt (NaCI)
• Sugar (C6H2O2)
• Carbon dioxide (CO2)

COMPOUND

• Forced when 2 or more Different atoms are joined together.
• Note:
• All compound are also molecules,but not all molecules are compound.
• Example: of compounds.
• (Co2)
• (NaCI)
• (H2O2)
• Non Example:
• (O2)
• (H2)
• Why aren't these compound?
• Subscription tells you how many "atoms" of elements for that molecule.
• Example:

SUBSCRIPT

• Subscriptions tell you how many "atom" of each element for Molecule.
• Example:
• (H2)=2 atoms hydrogen
• Examples:(H2O)= 2 atoms hydrogen, 1 atoms oxygen

COEFFICIENTS

• Multiply the numbers of molecules you are making
• Example:
• 2 H2O= 4 atoms hydrogen, 2 atoms oxygen

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