Magnesium Hydroxide and Ionic Compounds

Magnesium Hydroxide and Ionic Compounds

Assessment

Interactive Video

Chemistry

9th - 10th Grade

Hard

Created by

Olivia Brooks

FREE Resource

The video tutorial explains how to write the chemical formula for magnesium hydroxide. It begins by identifying magnesium and hydroxide ions, highlighting their charges. The tutorial then describes the nature of ionic compounds and the importance of balancing charges to achieve a neutral compound. The crisscross method is introduced as a technique to determine the correct subscripts for the formula. Finally, the video verifies the formula and concludes with the correct representation of magnesium hydroxide as Mg(OH)2.

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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the symbol for magnesium on the periodic table?

Md

Ma

Mn

Mg

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the charge of the hydroxide ion?

1+

2-

1-

2+

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Why is magnesium hydroxide considered an ionic compound?

It contains only metals.

It contains only non-metals.

It contains no charged particles.

It contains both metals and non-metals.

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the ionic charge of magnesium in group two of the periodic table?

1+

2+

1-

2-

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What method is used to balance the charges in magnesium hydroxide?

Addition method

Substitution method

Crisscross method

Cross-multiplication method

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In the crisscross method, what happens to the charges?

They are ignored.

They are swapped and used as subscripts.

They are subtracted.

They are added together.

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Why do we use parentheses around the hydroxide ion in the formula?

To indicate it is a metal.

To show it is a polyatomic ion.

To separate it from magnesium.

To make it look neat.

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