Unit 1 AOS1 Chapter 4.3 Formation of ionic compounds

Question 1

How do u name ionic compounds?

Answer 1

The positive metal name stays the same and a ide replaces the one suffix of the non-metal.

Question 2

What is charge of oxide?

Answer 2

2-

Question 3

What is charge of sulfide?

Answer 3

2-

Question 4

What metal ions can form more than one cation ?

Answer 4

iron(II) and (III), copper(I) and (II), and mercury(I) and (II).

Question 5

Why do some metals have bracket and charge and non-metals do not?

Answer 5

Because they may be able to form more than one type of ion.

Question 6

What is a polyatomic ion?

Answer 6

A polyatomic ion is a group of tightly bound atoms that behaves as a single unit and carries an overall charge.The carbonate ion, for example, is composed of one carbon atom and three oxygen atoms. The whole group of four atoms carries a negative two charge.

Question 7

What does adding a hydrogen do to the charge of a polyatomic ion?

Answer 7

Adding a hydrogen decreases the negativity of the charge by one

Question 8

What are hydrates?

Answer 8

Hydrates are any compound that absorbs water in the form of H2O molecules into their chemical structure

Question 9

Write the prefix for numbers 1-10.

Answer 9

mono- = 1
penta- = 5
nona- = 9 di- = 2
hexa- = 6
deca- = 10 tri- = 3
hepta- = 7
tetra- = 4
octa- = 8

Question 10

How is a polyatomic ion form?

Answer 10

A polyatomic ion forms when a group of non-metallic atoms covalently bond to produce an anion.

Question 11

the formula for iron(II) sulfate octahydrate

Question 12

the formula for iron(II) sulfate octahydrate