What are the two main misconceptions about chemical equilibrium?
There are two big misconceptions about chemical equilibrium: one, that in chemical equilibrium there are equal parts reactants and products and, two, that once a chemical reaction reaches equilibrium, the reaction has stopped.
What is the weirdest chemical reaction?
Mercury(II) Thiocyanate decomposition is possibly the weirdest chemical reaction in the world.
What is the coolest chemical reaction?
The 10 below produce some of the most amazing results.
- of 10. Thermite and Ice.
- of 10. Briggs-Rauscher Oscillating Clock.
- of 10. Hot Ice or Sodium Acetate.
- of 10. Magnesium and Dry Ice Reaction.
- of 10. Dancing Gummy Bear Reaction.
- of 10. Fire Rainbow.
- of 10. Sodium and Chlorine Reaction.
- of 10. Elephant Toothpaste Reaction.
What are the negative effects of chemical reactions?
Accidents or incorrect use of household chemical products may cause immediate health effects, such as skin or eye irritation or burns, or poisoning. There can also be longer-term health effects from chemicals. When these occur, they are usually the result of exposure to certain chemicals over a long period of time.
What is Le Chatelier’s principle?
– [Instructor] Le Chatelier’s principle says, if a stress is applied to a reaction mixture at equilibrium, the net reaction goes in the direction that relieves the stress. Change in the concentration of a reactant or product is one way to place a stress on a reaction at equilibrium.
What happens if more reactants are added?
If additional reactant is added the rate of the forward reaction increases. As the rate of the reverse reaction is initially unchanged, the equilibrium appears to shift toward the product, or right, side of the equation. As the additional reactant is consumed the forward rate slows.
Is Coke and Mentos a chemical reaction?
But the amazing eruption that takes place when Mentos are dropped into Diet Coke or other brands of diet soda pop is not a chemical reaction at all! Instead it is a physical reaction. That means that all of the pieces of the reaction are there, but that they are simply rearranged.
Why does Coke and Mentos react?
The carbon dioxide molecules attach to the surfaces of the Mentos like they did in the cup of soda. All those Mentos in a lot of soda make a lot of bubbles that rise to the surface and push the soda out in a big woosh!
What are some problems caused by chemistry explain?
When chemicals get on or inside your body for many months or years, they can cause chronic health problems. Getting exposed to a lot of a chemical all at once can also cause chronic health problems. Cancer, liver and kidney damage, and nervous system illness and brain damage are examples of chronic problems.
Why are chemical reactions bad for the environment?
The release into the air of chemicals and particles can cause direct damage to the troposphere (air pollution); alter the composition and function of atmospheric layers (greenhouse effect) or other indirect damages (ozone layer depletion).
What is Apex equilibrium?
A form of equilibrium where opposing forces balance each other out, and the system as a whole does not change.
Does temperature affect equilibrium?
if the temperature is increased, the position of equilibrium moves in the direction of the endothermic reaction. if the temperature is reduced, the position of equilibrium moves in the direction of the exothermic reaction.
What’s in this collection from chemical misconceptions?
This collection brings together chapters from Chemical misconceptions: Prevention, diagnosis and cure, designed to help you identify, prevent and address common misconceptions in chemistry. Originally published in two volumes, chapters range from surveying relevant theory to providing ready-to-use classroom resources. They include:
How do you identify misconceptions in chemistry and physics?
Today’s post focuses on common misconceptions in chemistry and physics. The first step in dispelling misconceptions is to identify them and to recognize their sources. To identify misconceptions, homeschool parents and teachers can: use open-ended questions to assess what students know about the topic of a lesson.
How do you deal with misconceptions in the classroom?
The first step in dispelling misconceptions is to identify them and to recognize their sources. To identify misconceptions, homeschool parents and teachers can: use open-ended questions to assess what students know about the topic of a lesson. Simply correcting a mistaken impression through discussion, however, may not work.
How do you identify misconceptions in homeschooling?
To identify misconceptions, homeschool parents and teachers can: use open-ended questions to assess what students know about the topic of a lesson. Simply correcting a mistaken impression through discussion, however, may not work. Instead, provide an opportunity for students to test out their theories.