Unit B 3.2

Question 1

What is an ionic compound?

Answer 1

Pure substances formed as a result of the attraction between particles of opposite charges, called ions. And ionic compound is always composed of a metal and a non-metal element

Question 2

What is an ion?

Answer 2

An ion is an atom that has become electronically charged because it has lost or gained electrons

Question 3

What is a positive ion?

Answer 3

Of atom that has lost one or more electrons. There are more positive than negative charges

Question 4

What is a negative ion?

Answer 4

A negative ion is an atom that has gained one or more electrons. There are more negative than positive

Question 5

What is a polyatomic ion?

Answer 5

A group of atoms acting as one ion. The end of the chemical name is changed for example to -ate or -ade

Question 6

What are some properties of ionic compounds?

Answer 6

High melting point
Good electrical conductors when melted or dissolved
Distinct crystal shape
Solid at room temperature

Question 7

Where is the ionic charge written?

Answer 7

In a super scripts and as a positive or negative with a number to indicate how many electrons are added or taken away

Question 8

How do you name an ionic compound?

Answer 8

Write the chemical name of the metal (positive) ion. And then write the chemical name of the nonmetal (negative) ion, but change its ending to -ide