Chemical Interactions

All compounds are made up of two or more _______

• atoms

• elements

• protons

• compounds

The nucleus of an atom has a positive charge because the nucleus contains

• protons

• neutrons

• electrons

• ions

A covalent bond is the attraction of each atom's _______ for the shared pair of electrons.

• nucleus

• atom

• proton

• electron

Ionic bonds form as a result of the attraction between positive and negative _____

• air

• gas

• ions

• eyes

When an atom loses an electron:

• becomes a negative ion

• becomes a positive ion

• what is an ion?

The least reactive elements as a family are the ______.

• Halogens

• Alkaline earth metals

• Alkali metals

• Noble gases

If an element has 8 valence electrons is it stable or unstable?

• stable

• unstable

A covalent bond in which electrons are shared unequally is a ______ bond.

• polar

• isotomic

• atomic

• twin

An attraction between a positive metal ion and the electrons surrounding it ("sea of electrons") is called

• metallic bond

• atomic bond

• basic bond

• hyperbond

A row across the periodic table is called a

• family

• period

• group

• class