Hydrates and Polyatomic Ions

Hydrates and Polyatomic Ions

Assessment

Interactive Video

Chemistry

9th - 10th Grade

Hard

Created by

Patricia Brown

FREE Resource

This video tutorial covers the concept of hydrates in ionic compounds, explaining how they form by attaching water molecules to the crystal lattice. It details the naming conventions for hydrates, using prefixes to indicate the number of water molecules. The tutorial includes examples and practice problems to reinforce understanding. It concludes with a reminder about an upcoming quiz on polyatomic ions.

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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the primary focus of hydrates in ionic compounds?

To increase the temperature of compounds

To remove water from compounds

To add water to ionic compounds

To change the color of compounds

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Why is it important to account for water weight in hydrates?

Because it changes the color of the compound

Because it affects the mass of the compound

Because it alters the temperature of the compound

Because it changes the state of the compound

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How do you name a hydrate with three water molecules?

Trihydrate

Dihydrate

Tetrahydrate

Pentahydrate

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What prefix is used for a hydrate with seven water molecules?

Octa

Hepta

Nona

Hexa

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the formula for potassium carbonate heptahydrate?

K2CO3·7H2O

K2CO3·6H2O

K2CO3·5H2O

K2CO3·8H2O

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the charge of lithium in lithium sulfite pentahydrate?

+1

+2

-2

-1

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the chemical formula for lithium sulfite pentahydrate?

Li2SO3·5H2O

Li2SO3·4H2O

Li2SO3·6H2O

Li2SO3·3H2O

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