Demonstration Lesson Plans Click Below
! ! :
1. Acid/Base
Reactions: The
"Breath Activated" Demonstratoins
2. Acid/Base
Reactions and "Cabbage Indicator"
Section 1- Chemical
& Physical Changes
Section 2- Chemical
& Physical Properties
Section 3 - Water &
Its Properties
Section 4 - Corrosion
Section 6 - Gases & Pressure
Appendix 1 -Charts & tables, Disposal of Chemicals, Sources of Chemicals, Preparations of Acid and Solutions
Appendix 2 Properties of Common Elements, Descriptions of the Elements, Ban Dihydrogen Monoxide
Appendix3 Principles of Education, Prof. Hanko
The Reformed Witness, Rev. Cammenga
SECTION 5 : ACIDS/BASES/INDICATORS
How should the Reformed believer understand the concepts related to acids/bases/indicators?
When we study the acids and bases the complexity and beauty of the creation awe us. Acid and base reactions are found in so many "every-day" life situations, from the need for a constant pH in our blood, to acid-indigestion, to vinegar and baking soda reactions, we see that God has created these things in the Creation for a purpose. Each reaction has its very own purpose according to God’s will. In God’s providential care He governs these reactions so that life can be sustained on this earth. In the human blood, just a small deviation from the pH level could prove to be fatal. God governs these tiny buffer reactions in the blood that we may continue to live and bring glory to God.
Acids and bases are also corrosive and caustic. This again brings us back to the idea discussed in the section earlier on corrosion. We see again how sin is corrosion. We see how we are both physically and spiritually corrupt and dead because of sin. As we see the corrosive nature of acids and bases we are reminded to look at creation and ourselves and see the corruptive effects of sin.
Indicators serve the purpose of "indicating" or "showing" the observer whether or not the solution is acidic or basic. When we study how indicators work and "show" us and give us valuable information about a solution, we are reminded that God has given us "signs" by which to discern the condition of man and society and of Christ’s return. "The Pharisees also with the Sadducees came, and tempting desired him that he would show them a sign from heaven. He answered and said unto them, When it is evening, ye say, It will be fair weather: for the sky is red. And in the morning, It will be foul weather today: for the sky is red and lowering. O ye hypocrites, ye can discern the face of the sky; but can ye not discern the signs of the times?" (Matthew 16:1-3). We are reminded that although it is interesting to study the indicators and the signs and information that that gives us about solutions, it is far more important that we spend time reading and studying the "signs of the times".
When we study acids, bases and indicators may we see the corruption that has come upon the earth and man because of our sin. May we also be reminded to look at the signs of the times and every be watching for our Lord’s return. To God be given all the glory.
The Federation Board of the Protestant Reformed Christian Schools commissioned Joel Minderhoud to develop this Repertoire of Chemical Demonstrations
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