Atomic Stability & Ionic Bonds Test Review I

The properties of a compound are the same as the properties of the elements making up the compound.

• True

• False

In ionic compounds, the positively charged ions are formed from ____________ elements.

• metalloid

• metal

• hydronium

• non-metal

The forces that hold different atoms or ions together are

• electric currents.

• physical bonds.

• nuclear forces.

• chemical bonds.

Tags

NGSS.HS-PS1-1

____________ are atoms that have a charge.

• Molecules

• Ions

• Metalloids

• Isotopes

An ionic bond is a bond that forms between

• atoms with neutral charges.

• the electrons of two different atoms.

• ions with opposite charges.

• one atom’s nucleus and another atom’s electrons.

When calcium combines to from an ionic compound, the charge of the calcium ion is

• 2+

• 1+

• 2-

• 4-

In a chemical formula, the number of each type of atom in the compound is shown by numbers called ____.

• superscripts

• chemical symbols

• oxidation numbers

• subscripts

The ____ tells you how many electrons an atom must gain, lose, or share to become stable.

• atomic mass

• atomic number

• ionic number

• oxidation number

How many electrons are needed in the outer energy levels of most atoms for the atom to be chemically stable?

• 2

• 4

• 6

• 8

What is the name of the compound with the formula NaCl?

• chlorine sodiate

• sodium chlorate

• sodium chloride

• sodium dichloride