ionic Bonds

Question 1

How do ions form?

Answer 1

An atom that loses one of its electrons becomes a positively charged ion. That atoms that gain the electron becomes a negatively charged ion

Question 2

What is an atom or group of atoms that has an electric charge called?

Answer 2

Ion

Question 3

What is a positive ion

Answer 3

When a neutral atom loses a valence electron it loses a negative charge and becomes positive

Question 4

What is a negative ion

Answer 4

When a neutral atom gains an electron it gains a negative charge and becomes negative

Question 5

Which atoms are likely to lose electrons?

Answer 5

Metal atoms

Question 6

Which atoms are likely to gain electrons?

Answer 6

Nonmetal atoms

Question 7

What do you call ions that are made of more than 1 atom?

Answer 7

Polyatomic ions

Question 8

What kind of charges do polyatomic ions have?

Answer 8

positive or negative charges

Question 9

What is the attraction between two oppositely charge ions called?

Answer 9

ionic bond

Question 10

What is the resulting compound called in an ionic bond?

Answer 10

ionic compound

Question 11

Describe ionic compounds

Answer 11

1. Positive and negative charges

2. total positive charge of all the positive ions equals the total negative charge of all the negative ions

Question 12

What is a group of symbols that shows the ratio or elements in a compound called?

Answer 12

Chemical formula

Question 13

What happens when ionic compounds form?

Answer 13

the ions combine to balance the charges on the ions

Question 14

What tells the ratio of elements in a compound?

Answer 14

Subscripts

Question 15

How do you write the formula for an ionic compound?

Answer 15

Write the symbol of the positive ion and then the symbol of the negative ion, add the subscripts that are needed to balance the charges

Question 16

If no subscript is written, what is the understood subscript?

Answer 16

1

Question 17

Where does the name of ionic compounds come from?

Answer 17

The name of the positive ion comes first, followed by the name of the negative ion

Question 18

The name of the positive ion is usually the _____

Answer 18

metal

Question 19

What does the name change to if the negative ion is a single element?

Answer 19

end of the name changes to ide

Question 20

What does the name change to if the negative ion is polyatomic?

Answer 20

the name usually ends in ate or ite

Question 21

What are the properties of ionic compounds?

Answer 21

hard, brittle crystals form that have high melting points, they conduct an electric current when dissolved in water or melted

Question 22

How do ionic compounds form solids?

Answer 22

By building up repeating patterns of ions

Question 23

What is the name of ions that form an orderly, three-dimensional arrangement?

Answer 23

crystal

Question 24

Describe the properties of crystals

Answer 24

1. pattern formed is the same no matter the size of the crystal
2. hard and brittle
3. high melting points, takes a lot of energy

Question 25

What is the flow of charged particles called?

Answer 25

electric current

Question 26

What happens to the ionic crystals when they dissolve in water?

Answer 26

the ions are free to move about, a solution can conduct current

Question 27

When will ions in crystals not move freely?

Answer 27

When the solid crystal are tightly bonded to each other, there is not current