q3w6-7 science

Smallest possible unit into which matter can be divided, while still maintaining its properties.

• atoms

• protons

• neutrons

• molecules

what are atoms made up of?

• PROTONS

• MOLECULES

• NEUTRONS

• ELECTRONS

This is a measure of readily an atom accepts an electron

• IONIZATION ENERGY

• ELECTRONEGATIVITY

• ATOMIC RADIUS

• ELECTRON AFFINITY

his is half the distance between the middle of two atoms just touching each other.

• IONIZATION ENERGY

• ELECTRONEGATIVITY

• ATOMIC RADIUS

• ELECTRON AFFINITY

A measure of how readily an atom forms a chemical bond. Electronegativity increases moving left to right across a period and decrease moving down a group.

• IONIZATION ENERGY

• ELECTRONEGATIVITY

• ATOMIC RADIUS

• ELECTRON AFFINITY

This is the energy needed to completely remove an electron from an atom or ion. Ionization energy increases moving left to right across the table and decreases moving down a group.

• IONIZATION ENERGY

• ELECTRONEGATIVITY

• ATOMIC RADIUS

• ELECTRON AFFINITY

refers to trends or recurring variations in element properties with increasing atomic number.

is caused by regular and predictable variations in element atomic structure.

was helped by MENDELEEV

• PERIOD

• GROUP

• ERA

• PERIODICITY

Do not form compounds easily

Happy/Inert Elements (Full outer shells)

 Rare gases, not very abundant on earth

Least reactive elements

• halogens

• metalloids

• noble gases

• other metals

Exist in all three states of matter.

Comes from the Greek word hals, meaning salt and genes meaning forming.

Combine readily with metals .

• metalloids

• halogens

• non-metals

• noble gases

what does halogen means

• salt

• former

• salt former

• burned salt