Chemical Reactions and Ionic Compounds

Chemical Reactions and Ionic Compounds

Assessment

Interactive Video

Chemistry

9th - 10th Grade

Hard

Created by

Aiden Montgomery

FREE Resource

The video tutorial explains how to write and balance the chemical equation for calcium iodide (CaI2) reacting with water (H2O). It covers the ionic nature of calcium iodide, the charges of calcium and iodine ions, and how they form a neutral compound. The process of dissolving calcium iodide in water is described, highlighting the dissociation into ions and the concept of an aqueous solution. The tutorial also demonstrates balancing the equation by adjusting coefficients to ensure the number of atoms on both sides is equal.

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8 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What type of compound is formed when a metal and a non-metal combine?

Covalent compound

Ionic compound

Metallic compound

Organic compound

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What charge does calcium have in the periodic table?

2+

1-

2-

1+

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In which group is iodine found in the periodic table?

Group 2

Group 1

Group 18

Group 17

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What happens to calcium iodide when it is placed in water?

It forms a precipitate

It dissociates into ions

It reacts to form a gas

It remains unchanged

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the charge of the iodide ion?

1-

2+

2-

1+

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What does the term 'aqueous' mean in a chemical equation?

Gaseous state

Dissolved in water

Liquid state

Solid state

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Why don't we need to write H2O on the product side of the equation?

Because it is already implied as aqueous

Because it is a gas

Because it reacts completely

Because it is a solid

8.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the balanced chemical equation for the reaction of calcium iodide with water?

CaI2 + H2O → CaI2(aq)

CaI2 + H2O → Ca + I2 + H2O

CaI2 + H2O → Ca2+ + 2I-

CaI2 + H2O → CaI2 + H2O