Unit 2 Chem: Matter, Atomic Structure and Periodicity

What does Coulomb's Law state about distance and charge?

Distance matters more than charge.

What is the reactivity trend for most reactive metals?

Most reactive metals are larger and are the best electron donors.

What is the reactivity trend for most reactive nonmetals?

Most reactive nonmetals are the smallest and are the best electron acceptors.

What does the Periodic Law state?

When arranged by atomic number, elements display a regular and repeating pattern of chemical and physical properties.

What determines the chemical behavior of elements?

The chemical behavior is determined by the valence electrons.

What are three properties of metals?

Lustrous, ductile, and malleable.

What is a unique property of metalloids?

They are shiny yet brittle and act as semiconductors.

What defines alkali metals in terms of reactivity and valence electrons?

Alkali metals are extremely reactive and have 1 valence electron.

What are the states of matter represented in the Halogens group?

Halogens include solids, liquids, and gases.

What characterizes noble gases in terms of reactivity and valence shell?

Noble gases are non-reactive with full valence shells.

What happens to ionization energy when moving across a period?

Ionization energy increases.

What happens to electronegativity as you move down a group?

Electronegativity decreases.

What is the atomic radius trend across a period?

Atomic radius decreases.

What is the trend for atomic radius as you move down a group?

Atomic radius increases.

How do cations and anions differ in size?

Anions are larger while cations are smaller.