Name:______date:______period:______(3)

Science 8: Ch 8.2 Ionic Bonds (pages 230-235)

Key Concept
Ionic bonds form when electrons are ______from one atom to another atom.
What type is a bond is table salt made from?
Why do ionic bonds form?
Is it true than when one atom loses an electron then another atom gains it?
Why is an atom neutral?
What cancels out the positive charge of a proton?
What does a transfer of electrons do to an atom in relation to the number of protons?
Regardless of the number of electrons that are transferred , do the number of protons in an atom change?
If the charges of the protons and electrons in an atom do not cancel each other out, what does the atom become?
If an ion has more protons than electrons, what type of an ion is it?
If an ion has less protons than electrons, what type of an ion is it?
During chemical changes, how do ionic bonds form?
Do metal atoms tend to lose, gain or share electrons?
What electrons do metal atoms lose?
Looking at Figure 2 on page 231, how many electrons are in aluminum’s outer energy level?
Will aluminum lose, gain or share electrons in its outer energy level?
What does the 3+ in Al3+ mean?
When an atom loses electrons, what is needed to overcome the attraction of the electrons to the protons in the nucleus?
Which requires less energy, taking electrons from metals or nonmetals?
Which are found in nature, the atoms of metals in GROUPS 1 and 2 or ions of metals in GROUPS 1 and 2?
In ionic bonding, the energy needed to remove electrons from metal atoms comes from what?
Ions with a negative charge have more of which: electrons or protons?
Only a few electrons are needed to fill the outermost energy level in what type of elements?
Are nonmetals more likely to gain, lose or share electrons?
For oxygen to fill its outermost energy level, how many electrons must it gain?
When oxygen gains its electrons to fill its outermost energy level, what does oxygen become?
What is the symbol for the oxide ion?
What is the ending used for the names of negative ions?
What is given off by most nonmetal atoms when they gain electrons?
Which group of elements gives off the most energy?
How many electrons do the halogens gain?
What are examples of two halogens that release large amounts of energy? / 1.
2.
Ionic bonds form from strong or weak forces of attraction?
What is attracted in an ionic bond?
In an ionic bond, the number of electrons lost by a metal atom is equal to what?

Using Figure 4 on page 233, show how sodium and chlorine form an ionic bond with a neutral charge?

When an ionic bond forms, does it have the same properties as the metal and nonmetal did?

Using Figure 4 on page 233, describe the properties of sodium, chlorine and sodium chloride.

What type of pattern are ionic compounds made up of?

Using Figure 5 on page 234, draw a picture of the pattern that makes the compound sodium chloride.

What are four physical properties of ionic compounds? / 1.
2.
3.
4.