Chemical Reactions and Balancing Equations

Chemical Reactions and Balancing Equations

Assessment

Interactive Video

Chemistry

9th - 10th Grade

Hard

Created by

Sophia Harris

FREE Resource

The video tutorial explains the chemical reaction between silver (Ag) and hydrogen sulfide (H2S), which results in silver tarnish. The instructor, Dr. B, demonstrates how to balance the chemical equation for this reaction. Initially, the equation is unbalanced with respect to silver atoms. By adding a coefficient of two in front of the silver, the equation becomes balanced, ensuring the number and type of atoms on both sides are equal. The tutorial concludes with a balanced equation for Ag plus H2S.

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6 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What causes silver to tarnish when exposed to certain gases?

Reaction with hydrogen sulfide

Reaction with oxygen

Reaction with nitrogen

Reaction with carbon dioxide

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In the reaction between Ag and H2S, what is the product formed that causes tarnishing?

AgCl

Ag2S

AgNO3

Ag2O

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How many silver atoms are present on the product side before balancing the equation?

Four

Three

Two

One

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which element's atoms are not balanced in the initial equation?

Oxygen

Hydrogen

Sulfur

Silver

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What coefficient is added in front of silver to balance the equation?

Four

Three

Two

One

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

After balancing, what is true about the atoms on both sides of the equation?

The number of atoms is different

The type of atoms is different

The equation is still unbalanced

The number and type of atoms are the same