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Chemical Reactions and Safety Measures

Chemical Reactions and Safety Measures

Assessment

Interactive Video

Chemistry, Science

9th - 12th Grade

Practice Problem

Hard

Created by

Amelia Wright

FREE Resource

The video tutorial demonstrates the process of coiling a steel wire into a spring shape and setting up a reaction with chlorine gas in an Erlenmeyer flask. It highlights the vigorous reaction that occurs, which can cause the steel to melt, necessitating the addition of water to prevent flask breakage. The reaction releases significant heat and produces a reddish-brown gas identified as iron(III) chloride (FeCl3). The tutorial concludes with filtering the reaction mixture to obtain a reddish-brown FeCl3 solution.

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5 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the initial step in setting up the experiment?

Adding water to the flask

Coiling a steel wire into a spring shape

Filtering the solution

Heating the flask

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Why is it important to add water during the reaction?

To increase the reaction speed

To cool down the reaction

To prevent the flask from breaking

To dissolve the steel wire

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is released as a result of the reaction?

Colorless gas

Oxygen gas

Hydrogen gas

Reddish-brown gas

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the chemical formula of the reddish-brown gas produced?

H2O

Cl2

FeCl3

FeCl2

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the final step in obtaining the FeCl3 solution?

Filtering the solution

Heating the solution

Coiling more steel wire

Adding more chlorine gas

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