Atoms, Bonding, and the periodic table Chapter 3

What is a double bond?

• A bond between two atoms.

• One pair of electrons shared between two atoms

• Two pairs of electrons shared between two atoms

• Two pairs of electrons shared between four atoms

A metal crystal consists of positively charged metal ions embedded in a "sea" of freely moving (a)   .

Which of the following terms means that metals can be rolled into thin sheets, as in aluminum foil, or beaten into complex shapes?

• polar

• ductile

• alloy

• malleable

A low melting point is one property of molecular compounds.

• True

• False, ionic

• False, metallic

• False, all

When an atom loses an electron, it becomes a

• positive ion

• negative ion

• neutral ion

• positive atom

Ionic compounds that dissolve in water conduct electricity because they break into (a)   that move freely.

What is the group number of the group containing the most reactive nonmetals.

(a)  

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Which is a property shared by most molecular compounds?

• high boiling point

• low melting point

• high melting point

• nonpolar bonds

What kind of bond forms between sodium and chlorine in sodium chloride (NaCl)?

• metallic bond

• covalent bond

• molecular bond

• ionic bond

The properties of solid metals can be explained by the structure of and the bonding among the metal atoms.

• True

• False, ionic properties

• False, luster

• False, alloy

Tags

NGSS.HS-PS1-3