Acids and Bases

• A volcano - Talk to an art teacher about making a volcano out of paper mache or plaster. You can also use clay or if you're in a hurry to make your volcano, use a mound of dirt outside.
• A container that 35mm film comes in or similar size container.
• Red and yellow food coloring (optional)
• Vinegar
• Liquid dish washing soap

1. Go outside or prepare for some clean-up inside
2. Put the container into the volcano at the top
3. Add two spoonfuls of baking soda
4. Add about a spoonful of dish soap
5. Add about 5 drops each of the red and yellow food coloring
   
   Now for the eruption!:
   
6. Add about an ounce of the vinegar into the container and watch what your volcano come alive.

A VOLCANO is produced over thousands of years as heat a pressure build up. That aspect of a volcano is very difficult to recreate in a home experiment. However this volcano will give you an idea of what it might look like when a volcano erupts flowing lava. This is a classic experiment in which a CHEMICAL reaction can create the appearance of a PHYSICAL volcano eruption. You should look at pictures of volcanoes to be familiar with the different types. (A SHIELD volcano, for example is the most common kind of volcano, and yet few people know about them) The reaction will bubble up and flow down the side like a real volcano (only much faster!) Look for videos of volcanoes erupting and be sure that you understand how heat and pressure work to really make volcanoes erupt.

1. Fill the glass about 3/4 full of water .
2. Add about 5 drops of food coloring
3. Slowly pour the vegetable oil into the glass. See how the oil floats on top - cool huh? It gets better.
4. Now the fun part: Sprinkle the salt on top of the oil.
5. Watch blobs of lava move up and down in your glass!
6. If you liked that, add another teaspoon of salt to keep the effect going.

So what's going on? Of course, it's not real lava but it does look a bit like a lava lamp your parents may have had. First of all, the oil floats on top of the water because it is lighter than the water. Since the salt is heavier than oil, it sinks down into the water and takes some oil with it, but then the salt dissolves and back up goes the oil! Pretty cool huh?

Exercise 3

• You may be familiar with sherbet, it’s a tasty treat for kids and also great for talking about acids and bases. Why? Let’s find out!
• Sherbet is great because it contains both an acid and a base which react when they are together. The key is that they don’t react until they reach your tongue. Why? Because this chemical reaction needs moisture to get it started. So where does this moisture come from? It comes from your mouth! That’s right, there’s a chemical reaction going on in your mouth when you eat sherbet.

• Find a bowl and make sure it’s clean and dry.

• 1/2 teaspoon of citric acid crystals
• 1 teaspoon of icing sugar
• 1/2 teaspoon of drink crystals (Tang, a fruit-flavored drink)
• 1/4 teaspoon of bicarbonate of soda (baking soda)

In Malaysia, Chemical Education has been in the main stream of the national education system since the days of independence. Chemistry was first taught at the secondary level; but was extended to the primary level as part of "Man and his environment" when the New Primary School Curriculum (KBSR) was introduced in 1982. Chemical education is continued in the Integrated Secondary School Curriculum (KBSM) in the combined science curriculum for forms one to three, and as part of general science and additional science or chemistry for forms four and five. For the science students who continue to study into the sixth forms, chemistry is taught as a subject both in the Higher School Certificate (STPM) and the "A" levels.
Chemistry is taught in all local universities and colleges with a science faculty/department. It is a pre-requisite for students taking undergraduate programmes in a majority of science, engineering, medicine, pharmacology, food science and nutrition, materials science, environment and, other technical and professional programmes and courses. Post graduate programmes in various disciplines in Chemistry is also being conducted in all universities with a science programme. This paper discusses chemical education in Malaysia, both at the school and university levels. It also reports on the Chemist Act 1975 and its relation to the Institiut Kimia Malaysia. Finally it relates chemistry to the industrialisation and the changing ways of life in Malaysia.

Let's try to answer the puzzle.

Across	Down
1 the other product of a neutralization reaction 4 one of the products of a neutralization reaction 5 color bases turn litmus paper 8 ions acids produce 9 common household base 10 acid found in stomach juices 13 ions bases produce 14 acid found in sodas 16 effect of acids on metals	2 pH range of 0-6.99 3 pH of 7 4 how bases feel 6 scale used to test acid and base strength 7 acids and bases reacting 9 acid found in vinegar 11 how bases taste 12 pH range of 7.01-14 15 how acids taste 17 color acids turn litmus paper 18 pH of pure water

You can click on this link to check you answer

Activity 5

	"A quiz about acids and bases. Let's see how much you can remember of those school chemistry lessons."
15 Points Per Correct Answer - No time limit

http://www.funtrivia.com/playquiz/quiz2568731d68e40.html


                           

Top from Left: Teacher Mawar & Teacher Aadila Below from left: Teacher Tzyy Ling & Teacher Shaw Jee

We are a group of chemistry teachers. We believe a chemistryteacher could inspire students to explore chemistry by challenging them to create an effective, eco-friendly cleaning solution. Besides, chemistry teachers could teach students the sciencetific method, including how to make observations, collect and record data, and draw conclusions. Last, we always believe that we could help students understand how chemistry impacts their lives.

This game is first finding clues about acids and bases, experimenting with acids and bases, and then answering a question based on the results. Students, take your time to explore the game!!!! 

Hey, students let's sing this song together. Hope this song can help you to learn more about acids, bases and salt.

Students, we can determine pH of a substance based on the colour change of the pH meter paper. Let,s try this activity and see how much you can score. Have fun.


http://www.harcourtschool.com/activity/acids/

Neutralization

Concentrations of Acids and Alkalis

Strength of Acid and Alkalis

Acids