Chapter 3
How do project
. Device and method to try
1. 1.1 materials
Lemon juice
1.2 Pineapple juice
1.3 Orange juice
1.4 Soluble salt 1.5
One of the main medal
3/2 yon
.
Knife 2.1 2.2 devices. 3 medium sized glass a 2.3
Small leaf Bowl 2 a
2.4 spoon 2 2.5 2.6 country butcher
. Litmus
Procedures and methods of operation,
1. Material preparation steps 1.1
Bring lemon Pineapple and orange juice squeezed to come and remove filter sludge dumped 1.2
. Apply a soluble salt to keep clean for about 5 minutes
. Steps to try
Episode 1 is up the acid juices when mixed and sorted from most to least value
1.1. Apply lemon juice squeezed from oranges, pineapple, from 1
.2 when all 3 types of juices and then so taken are mixed in proportion as follows: 1.2.1
. Put pineapple juice to mix with 1 tbsp lemon juice in equal quantities 1.2.2
. Apply vinegar to the mixture with 1 tbsp lemon juice in equal quantities, 1.2
.3 take orange juice to mix with pineapple juice in equal quantities, 1 tbsp 1.3
. When mixing proportion. People together and then test for the level of acid with litmus
1.4 save the results of the experiment. By sorting the value level of acid. From high to low value
Step 2 learn the ability to eliminate corrosion stains on the coins. When the salt water solution mixed into it.
2.1, remove the salt melts the water to mix with fruit juice in episode 1. 1 tbsp in 2.2
People together and then apply stain with a coin put into the juice that the soluble salt
2.3 leave for about 30 minutes, then observe the changes that are happening
2.4. Take a coin out of clear water, dry thoroughly, compare and save the results of experiments going on
.
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