Dilution Experiment

Dilution Experiment

On Monday for chemistry we did an experiment learning how to use serial dilution (Repetitive Dilution) to learn about how concentration gets weaker.

Aim: To make a dilution series to investigate concentration

Equipment: A Potassium Permanganate crystal, six large test tubes. tweezers, a plastic transfer pipette, a test tube rack, 10 mL measuring cylinder.

Method: 

1. Place the six test tubes in a test tube rack. Label the rack with numbers 1 - 6

     2. Using the measuring cylinder, fill test tube 1 with 10 mL of water. Fill the remaining test tubes with 5 mL of water 

     3. Using your tweezers, add a single crystal of potassium permanganate to test tube 1. 

      4. Gently shake the test tube until the crystal has dissolved

      5. Using the transfer pipette, carefully remove exactly 5 mL from test tube 1 and pour it into test tube 2.

       6. Rinse the transfer pipette thoroughly to ensure that no purple solution remains.

   

        7. Gently shake test tube 2 and repeat the transfer process, transferring exactly 5 mL of solution from test tube 2 to test tube 3.

         8: Rinse the pipette again and repeat the transfer process for test tubes 4, 5  and 6.

Results

           

Filtration Experiment

Filtration Experiment

In hurumanu 3 today we are going to be doing a Filtration Experiment, we have been learning about particles and today we are going to try and filter them.

Hypothesis: What do you think will happen

Aim: To separate a solution from a precipitate (precipitate is the name for a solid that forms in a liquid during a chemical reaction)

Equipment:

Sodium carbonate

Copper sulfate

Conical flask

Stirring Rod

200mL Beaker

Funnel

Filter paper

Hypothesis: What do you think will happen?
I don't think that much will happen I think it will just stay blue but im really hoping something interesting will happen.

Method 

1. Pour approximately 50mL of copper sulfate solution into a beaker.

2. Add the same volume of sodium carbonate solution. A reaction will happen, you should see a cloudy blue precipitate form. Called copper carbonate. 

3. Watch demo then fold filter paper to fit inside the funnel

4. Place the funnel with the filter paper inside of it, into the mouth of a conical flask. 

5. Stir the mixture in the beaker, then carefully pour it into the funnel. 

6. Observe what happened.

Observations and Discussion:

When we poured the liquids into the funnel it was a very ultra blue type colour but when it started filtering it turned into a clear colour which was the sodium carbonate we mixed into the copper sulfate , on the filter paper there was a blue residue that we could see.

All of the blue colour got filtered out and left behind a clear liquid.

Chemistry: Filtration

AIM: TO MAKE A FILTRATION PLANT USING HOUSEHOLD MATERIALS.

Water Filtration Plant

What is the filtration?

Filtration is separating solids from liquids by adding a medium through which

only the liquid can pass.

Examples are:

1. Kettle
2. Air
3. Pool
4. Internet

Materials

1. Sand

2. Pebbels

3. Funnel

4. Filter paper

5. Cone

6. Container

Process - ( use verbs or doing words in each step )

Step 1

Cut the bottle with scissors so that you make a cone & filter,

Step 2

Put the top half upside down that creates a funnel inside the other half,

STEP 3

Fold the filtered paper into squares so it will make a funnel

when opened,

STEP 4

Get 1 cup of Sand & pour it into the funnel that you made with

the filtered paper,

STEP 5

Pour some Sand & Pebbles into the filter so they do not fall out

of the filter,

STEP 6

Pour the dirty water into the funnel slowly & if the water is dripping

out of the filter then you have done a good job,

Findings

We think that we did not fail or do well but we deffiently got the results we wanted,

The water filtered alright but it kind of failed because when we made the funnel we forgot a

few bits and some of the dirt off the pebbles fell into the bottom of the bottle and when the

clean water was filtering is dirted it. But other than that we would call it a succes. ✔

Minutes  1. There was a ton of water pouring/dripping through

the filter for about 1.5min, it wasn’t really pouring fast but

dripping fast as well as being clean,  

                      

2. It kept dripping about 3drops per 20 seconds for 2minutes straight,

the water still kept clean sortive?   

                

3. The water drops were getting the tiniest of dirt inside the water but

they still came through the filter a little bit clean, and just a tiny

bit slower,        

           

4. it wasn’t really dripping or started to slow down within 4minutes,

but we tried to carry it on so it would keep going so it did but

not so much it didn’t work it just carried on a little bit because we poured

a little bit because we weren't allowed,

5. It was about to stop halfway during 5mins but we tried

to make it keep going by shaking the bottle and surprisingly

it worked but then it stopped 20seconds later...

Drops per minute: 9 Drops per minute

Watercolour: Clear

Conclusion: What we have learned today was that we had to

make the water clean and Fresh so that we learned something

and to blog about our findings, Also we had to think hard and see

what would really happen to the water,

Would it be Clean? Or would it be Dirty?

Home Chemistry Task

Home chemistry Task!

This term technically we are starting something called home chemistry for our science project. This was our first task.

Aim: To learn the names of 10 household chemicals, their elements, and reactions with other substances.

 

Equipment:

1. Soap

2. Lemon

3. Salt

4. Vinegar

5. Sugar

6. Air Freshener

7. Onion

8. Lemonade

9. Bleach

10. Baking Soda

Task 1: Put the chemicals in a chart with the titles: Name, Chemical ingredient(s), Image, Solid/Liquid/Gas.

Name	Chemical ingredient(s)	Image	Solid/Liquid/Gas
Salt	Sodium chloride		Solid
lemon	Citric acid		Solid
vinegar	Acetic Acid or ch3cooh		Liquid
Air freshener	Formaldehyde Alpha-pinene		Gas
onion	Potassium, cysteine derivatives		Gas
lemonade	Citric acid, C H O		Liquid
Bleach	Hydrogen peroxide, Sodium hypochlorite		Liquid
Baking soda	NaHCO3 sodium bicarbonate		Solid
Sugar	glucose and fructose, C12H22O11		Solid
Soap	Sodium hydroxide and or potassium,		Solid

In conclusion:

I learned a lot of new things like what everyday house hold objects have in them and if they are a solid/gas/or liquid, I feel like home chem is going to be a very fun project and I am aiming to get a science badge. Hope you enjoyed this.