ATOM REVEIW

ATOMS

• Atoms are the smallest form of matter
• Pure elements are made of different atoms
• Atoms are made of Protons, Neutrons and Electrons
• it's important to know what atoms are because:
• We should understand what elements things are made of

ELEMENT

• Elements are made of one KIND of atom
• They are found on the periodic table of elements
• Elements gets their names from different things
• Ex. Neptunium, Californium, Sumarium
• Elements also have symbols like: Au, Na, O

PROTON

• Protons are in the nucleus of an atom
• They are positively charged
• It's important to know what a proton is
• Because they determine what kind of atom

NEUTRON

• Found also in the nucleus
• They have no charge
• (Their netural)
• Neutrons are important because
• They get you the atomic mass number

ELECTRON

• They have a negative charge
• They are found orbiting the nucleus
• They are important because they
• Counter balance Protons

NUCLEUS

• Nucleus is Latina for little nut
• The nucleus is the center of the atom
• It contains both protons and neutrons

ATOMIC MASS NUMBER

• The atomic number is the number of:
• Neutrons + Protons
• It's useful to know the amu so you can
• Figure out what kind of element the atom is

ATMOIC MASS

• Atomic mass is the weighed average of isotopes
• Basically the mass of an atom
• It's necessary that we figure out know what the atomic mass
• Is because it tells us oh many isotopes an atom has

ATOMIC NUMBER

• It's the number of protons found in an atom
• We need to understand atomic numbers so we can
• Elements can be identified by the atomic number

ISITOPES

• When an atom has a different number of neutrons
• It becomes a proton
• Protons can be identified by the atomic mass number
• (AMN)
• There for it is important to know what isotopes are

IONS

• When atoms have a different amount of electrons it's called an ion
• It's important to know because we know if the atoms positive or negative
• When an ion is Negatively charged it's called an anion
• When their positively charged it's called an cation
• You can remember it because anti means against