Ch. 11 Elements and Chemical Bonds (8th)

Which is a property of covalent compounds?

• poor conductor

• good conductor

• high melting point

• always solid at room temperature

Which group of elements is the most stable?

• metals

• metalloids

• nonmetals

• noble gases

Ionic bonds are formed to create...

• energy.

• stability.

• more atoms.

• valence electrons.

a bond between positively and negatively charged atoms

• metallic bond

• electron dot diagram

• ionic bond

• chemical bond

a force that holds atoms together

• ion

• valence electrons

• metallic bond

• chemical bond

a chemical bond formed when positively charged atoms share their electrons

• metallic bond

• ionic bond

• chemical bond

• polar molecule

an atom that is no longer electrically neutral

• chemical bond

• metallic bond

• ion

• electron dot diagram

has a slight positive end and a slight negative end because of unequal sharing of electrons

• ions

• polar molecules

• chemical bonds

• metallic bonds

the part of an atom that participates in chemical bonding

• electron dot diagrams

• ions

• valence electrons

• polar molecules

Identify the portion of the periodic table labeled A. What trends occur in the atoms as you move from left to right on the periodic table?

• Portion A shows the periods. As you move from left to right, the number of electrons orbiting the atoms of each element increases.

• Portion A shows the groups. As you move from left to right, the number of electrons orbiting the atoms of each element decreases.

• Portion A shows columns. As you move from left to right, the number of electrons orbiting the atoms of each element stays the same.

• Portion A shows the number 4. As you move from left to right, the number of electrons orbiting the atoms of each element increases and decreases randomly.