unit 3 hicks chem

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Lustrous

Shiny

Malleable

Can be hammered into thin sheets

Ductile

Can be pulled into thin wires

Semiconductor

Can conduct electricity and heat under special conditions

Brittle

Shatters easily

Diatomic Molecule

Two atoms of the same element naturally bonded together (H, O, N, Cl, Br, I, F)

Nucleus

Dense center of atom composed of protons and neutrons; always positively charged

Electron Cloud

Largest region of atoms where electrons are found; negatively charged

Isotope

Atoms with the same number of protons but different numbers of neutrons

Mass Number

Protons plus neutrons

Atomic Number

Number of protons of a given element

Atomic Mass

The weighted average of all the isotopes of a given element

Percent Abundance

How often you find a given isotope in nature

Diatomic Molecules

molecules made up of two atoms of the same element

Elements: H1, N7, O8, F9, C6, Br35, I53

Atom, Compound

all matter is composed of atoms, which are the smallest units of an element that retain the properties of that element. atoms can come together to form compounds

3 Subatomic Particles, Location and Propertiws

Proton (Nucleus, +1 charge, relative mass 1)

Neutron (Nucleus, 0 charge, relative mass 1)

Electron (Electron Cloud, -1 charge, relative mass 1/1840)

metal families

Alkali Metals, Alkaline Earth, Basic Metals, Transition Metals, Actinides, Lanthanides

metalloids

intermediate between metal and nonmetal

nonmetal families

noble gases, halogens, nonmetal