Chromatography

 Science experiment

Aim: To separate the different pigments in inks or dyes using paper chromatography.

Equipment: Test tubes, Felts, Tube racks, Paper

Method
1.Cut the paper into strips.
2.Put small circles near the bottom of the paper like 2 centimetres up with a felt.
3.Fill the test tube with about a cm of water.
4.Then place the piece of paper in the test tube and hang a bit of the paper off the side.
5. Then finally let the water absorb the felt.

Observation: Well firstly I saw the water run up the paper and absorbed the colour and finally reach two different colour as it was green then went to yellow and blue. This is because blue and yellow make green 

word vomit

20.3.18

There was a girl who was reading her maths textbook for her maths exam coming up. Then she got hungry so she walked to the kitchen to grab an apple. As she was walking back to her set she saw a bright blue crayon that had a bright shiny yellow ring around it. When she walked over and grabbed it she got sucked into an alternate universe. Waiting for her was a white rabbit that was telling her “find the golden oar if you want to get home”.
we had to add the word maths textbook, apple, crayon, rabbit and oar.

My writing goal

Writing Goals:

Punctuation: For punctuation, I need to start using exclamation marks to show feelings or loud noises/ voices.
Vocabulary: To try and keep the reader interested in what I am writing.
Organisation: I need to focus on one idea in a paragraph.
Sentence structure: Make sure I choose the right sentence to show the reader what I want to know or how I want them to feel.
Structure: To try and match all parts of my writing to all text types.
Ideas: Add a lot of information to help the reader understand my idea.

How will these goals help my learning?
I think these goals will help my learning because it gives me something to work on.





 

Making a dilution series

When comparing solution, it is important to know how much solute has been dissolved in the solvent. Scientists use the terms dilute and concentrated to describe how 'strong' a solution is.

A dilute solution contains a small amount of solute. At home, if you were to make a 'weak' coffee, in scientific terms you are making a dilute solution of coffee.

A concentrated solution contains a large amount of solute. At home, if you were to make a 'strong' coffee, in scientific terms you are making a concentrated solution of coffee. 

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. Lable the rack with numbers 1-6.
2. Using the measuring cylinder, fill test tube 1 with 10 ml of water. Fill the remaining test tube with 5 ml of water.
3. Using your tweezers, add a single crystal of potassium permanganate to test tub 1.
4. Gently shake the test tube until the crystal has dissolved.
5. using the transfer pipette, carefully remove exactly 5ml from test tube 1 and pour in 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.

Observations:
During the experiment, as we added the liquid from test tube 1 into test tube 2 it started to get lighter and slowly started to lose its colour as we added it to all the other test tubes. 

Social studies

In the last couple of weeks, My group and I have been working on our slide for our cultural presentation in our group we had Maori, Cook island and Samoan. The slide presentation was to help people in our class Understand what different things we do and what different things we celebrate it was also so they could understand our history. 

I have learned about new religions and celebration I have also learnt a lot of different things about people in my class.

musical

Jesus Christ Superstar

• Who wrote the musical? Andrew Lloyd Webber.
• What is it about?  It depicts political and interpersonal struggles between Judas Iscariot and Jesus that are not present in the Bible. (I got it of wikipedia) 

Wicked
• How wrot the musical?Stephen Schwartz.
• What is it about? Wicked tells the story of two unlikely friends, Elphaba (the Wicked Witch of the West) and Galinda (whose name later changes to Glinda the Good Witch), who struggle through opposing personalities and viewpoints, rivalry over the same love-interest, reactions to the Wizard's corrupt government, and, ultimately, Elphaba's public fall from grace. ( I got this of wikipedia).
• What is it about? It is kind of about over coming bullying because the wicked witch was born green in the land of oz and would get bulled because of it. ( In my words)  

Investigating solubility

Aim: To investigate the solubility of baking soda (sodium hydrogen carbonate) and table salt (sodium chloride) to see which is the most soluble in water.

Equipment: A 250 ml beaker, 100 ml measuring cylinder, salt, baking soda, a stirring rod, a teaspoon and a ruler.

Method:

1. Fill the beaker with 100 ml of tap water.
2. Add a level teaspoon of baking soda. A level teaspoon is obtained by running your ruler across the edges of the teaspoon).
3. Stir the solution until all of the baking soda has dissolved.
4. Repeat step 2 and 3 until no more baking soda will dissolve into the solution.
5. Record how many teaspoons of baking soda were added.
6. Repeat the experiment, with the table salt.

Results: 

Your teacher will weigh the amount of baking soda and salt in a teaspoon. Use this number to calculate how many grams of each solid dissolved into the water.

Number of grams of baking soda that dissolved= 4 

Number of grams of table salt that dissolved= 12

Number of grams of carbon ll oxide disolved= 0

Conclusion:

We found out that out of the 3 things we tested table salt is more soluble than any of the 3 and baking soda will dissolve 4-6 teaspoons. Carbon ll oxide is insoluble which means it can't be dissolved. 

Home economics

5.3.18

measurement

Dry ingredients-When measuring dry ingredients use a measuring cups and level it off with the back of a knife.

Liquids- When every you are measuring Teaspoons or Tablespoons fill it up over top of the bowl and measure it to the top until it is levelled. If you measure in a measuring mug make sure it is on a flat surface at look at it from eye level.

Science experiment

In this investigation, you are to record the relationship between the height a ball is dropped from, And the height of the balls first bounce.

Equipment: Meter ruler - a tennis ball.

Aim: Make a brief statement of the purpose of your investigation.
To investigate how high a ball bounces from a certain height and to measure the height of the balls first bounce.

Hypothesis: Make a prediction of what you expect to observe during your investigation.
I think that if you drop the ball from a meter high it will bounce back up under a meter.

Method: Give a step-by-step description of how your experiment is to be carried 

1. Set up the ruler strat.
2. Drop the ball and record the data from that drop.
3. Change the height of where the ball is dropped from and see the difference between them.

Key Variables
Dependent: Measure how high the ball drops.
Independent: Changing the height of where the ball drops from. The surface it bounces on. Control: Keep the ball the same.

Drop Times:


Height dropped from/ Height it bounced 

1. 1 meter high    1. 51cm 
2. 1 meter high    2. 47cm
3. 50 cm high      3. 20cm
4. 50cm high       4. 15cm
5. 70cm high       5. 22cm
6. 70cm high        6. 32cm
7. 2 meters high  7. 75cm
8. 2 meters high  8. 70cm  

Discussion:

As I increased the height of the drop the bounce increased with it sometimes.

 

Conclusion:

We came to a conclusion that my hypothesis was kind of right.