Unit 1 Review PS

Proton

Neutron

Electron

Nucleus

Atoms of the same element with different numbers of neutrons

Atoms of different elements with the same number of protons

Atoms of the same element with different numbers of protons

Atoms of different elements with the same number of neutrons

Cation

Anion

Isotope

Neutron

Shiny appearance

Poor conductors

Lose electrons easily

Form positive ions

Mercury and Bromine

Hydrogen and Oxygen

Fluorine and Chlorine

Silicon and Boron

They are the outer shell electrons that determine chemical reactivity.

They are found in the nucleus of the atom.

They are responsible for the mass of the atom.

They are only present in noble gases.

High melting points

Form between nonmetals

Conduct electricity when dissolved

High boiling points

Ionic compounds form between metals and nonmetals, while covalent compounds form between nonmetals.

Ionic compounds have lower melting points than covalent compounds.

Covalent compounds conduct electricity when dissolved.

Ionic compounds are always liquids at room temperature.

tri-

di-

tetra-

penta-

Protons (positive), Neutrons (neutral), Electrons (negative)

Protons (negative), Neutrons (positive), Electrons (neutral)

Protons (neutral), Neutrons (negative), Electrons (positive)

Protons (positive), Neutrons (negative), Electrons (neutral)

Atomic structure

Periodic table organization

Chemical reactions

Ionic vs. covalent bonds