Dirty Water Filtration.

Kia ora welcome back or welcome to my blog. Today I will be talking about the dirty water Filtration. In science we have been learning about things like filtration, dilution, concentration, solutes and solvents. The aim of this experiment was to filter water.

First we had to make dirty water. We put 200ml of water into a beaker, 10ml of oil, 2 teaspoons of dirt and a teaspoon of pebbles. We then stired them together. When adding the solutes into the solvent, the dirt would dissolve, it would cause a mixture between the ingredients. Since the pebbles are insoluble they would only sink to the bottom off the beaker.

Next step was diluting the mixture. We took out 100 ml of the mixture, then added 100 ml of clean water. Adding the clean water took away most of the old dirty concentrated water, making a diluted mixture.

The last step was filtering the mixture. Taking a retort stand we added two funnels, the top one with a cloth and the other had filter paper. The cloth would catch the larger insoluble peices like pebble. The Filter paper would catch the smaller insoluble peices like the dirt. Then the water would drip into the clean beaker, making the filtrate. Ours though ended up looking a little yellow.

Concentration and Dilution.

Kia ora welcome back or welcome to my blog. Today I will be talking about concentration and dilution.

Concentration: The number of particles in a liquid.

Dilution: Making a concentrated liquid weaker in strength.

We can measure something in two ways:

  • How dilute something is… (how weak it is)
  • How concentrated something is… (how strong it is)

Expeiriment:

Aim: To make a dilution series to investigate concentration.

Equipment: A potassium permaganate crystal, six large test tubes, tweezers, a plastic transfer pipette, a test tube rack, 10ml measuring cylinder.

Method:

  1. Place six test tubes on a test tube rack. Label the rack with numbers 1-6
  2.  Using the measuring cylinder fill test tube 1 with 10ml of water. Fill the remaining test tubes with 5ml of water.
  3. Using your tweezers add a single crystal of potassium ponaganate to test tube 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 it into test tube 2.
  6. Rinse the transfer pipette thoroughly to ensure no purple solution remains.
  7. Gently shake tested tube 2 and repeat the transfer process, transferring exactly 5 ml of solution from test tube to test tube 3.
  8. Rinse the pipette again and repeat the transfer process for test tubes 4, 5 and 6.

9Dance 2025 term 1

Kia ora welcome back or welcome to my blog. Today I will be telling you about what I’ve been doing and learning about in dance this term. I’m in 9 dance alongside many of  my fellow classmates where we’ve been learning about choreography, dance fitness and a dance which we will be performing.

What have I enjoyed this term?

This term I have enjoyed being able to learn new and innovative dances that keep me moving. I enjoyed being able to choreography and perform my own dance. I enjoyed this term getting physically fit through fun and interesting dances to songs I enjoy and have lots of energy.

What have I found challenging this term in dance?

This term we have been exploring a lot out of my comfort zone in dance. This new dance push’s and moves me in ways I may not have done before,.. I’ve been tested physically through fitness and movement. Through the choreograph I got on stage to perform something that I had put a lot of work into. The choreography was tricky, trying to remember my own dance and find a way to work the movements to the lyrics whilst trying to be different and entertaining.

What would I like to try next term in dance?

I want to work as a whole class to choreograph and make a dance. I would like to try and explore new dance styles and layouts with groups. I’d love to be able to try and watch a dance and be able to asses and tweak it.

Dissolving gas in liquid.

Kia ora welcome back or welcome to my blog.

The smooth surface does not allow the bubbles to gather, the bubbles will only gather on a rough surface. When the rough mentors is first added to the coke there is a lot of bubbles. As the mentos becomes smooth the bubbles slow down.

Why does carbon dioxide escape from water when it is warm?

The particles of gas move quicker and are released very fast.

Based on your answer to duestion 1, why do you think carbonated drinks like soda are often stored in the fridge?

To keep the gas in the drink. The cool keeps the gas in the drink, keeping it fizzy.

The graph shows how much carbon dioxide can be dissolved in water at different temperatures.

As the temperature increases what happens to the amount of bubbles?

  • They decrease!

How much co2 was dissolved in water at each temperature?

0 degrees: 0.32

10 degrees: 0.24

20 degrees: 0.17

30 degrees: 1.13

40 degrees: 0.1

50 degrees: 0.08

60 degrees: 0.06

To make coca cola, the flavor is cooled down to very cold temperatures before adding Co2, why do they do that?

Because the cool temperature keeps the gas bubbles.

During a long hot summer, you may notice fish gulping air at the surface of a pod, HWy do they do this?

Because the oxygen would have been dissolved in the pond

Water Pong

Kia welcome back or welcome to my blog, Today I will be talking about the water pong game we played and how i9t affected my Te Whare Tapa Wha.

Te Whare Tapa Wha is the four walls of health. There are four areas of hauora and they are, Taha Whanau, family; Taha Tinana, Physical; Taha Hinengaro, Mental and Emotional; and Taha Wairua, Spiritual. Te Whare Tapa Whā shows how the 4 areas of a whare interconnect by them being four walls of the Whare that hold each other up and if one falls down they all fall down. This interrelating concept connects with a person as how when we go for a run we are getting physical, we get a break from everything, we may see others and our spirit feels better. 

Today in Health we played Water Pong. The aim of the game was to bounce the ping pong ball into one of the cups on the other side of the table and if you got it in the cup it went off to the side and the team that got all cups pout won. 

My hauora was positively affected during the game as I got to have fun playing games.This had a positive impact on my hauora because I like having fun. 

My hauora was negatively impacted when I was stressed trying to beat it. This had a negative impact on my hauora because being stressed is no fun.

 

Filtration.

Kia ora welcome back or welcome to my blog. Today I will be talking about filtration. Filtration is separating different sized particles out out of a mixture. Insoluble solids can be separated from liquids by filtering.

Aim:

To separate a solution from a precipitate. (Precipitate is the same for a solid the forms in liquid during a chemical reaction)

Equipment:

  1. Sand (10 grams)
  2. Filter paper
  3. Funnel
  4. Conical flask
  5. Beaker (150ml)
  6. Stirring rod

Method:

  1. Pour approximately 150ml of water into the beaker.
  2. Pour 10 grams of sand into the beaker and stir with a glass rod.
  3. Fold paper to fit inside the funnel.
  4. Place the funnel, with the filter paper inside it, inside of the moth of the conical flask.
  5. Stir then carefully pour into the mixture into the funnel.

Findings:

It took 16:45 to filter 150ml of water.

Rubber Band Chalenge.

Kia ora welcome back or welcome to my blog. Today I will be talking about the rubber band chalenge I did in health and how it affected my hauora.

There are four areas of hauora and they are, Taha Whanau, family; Taha Tinana, Physical; Taha Hinengaro, Mental and Emotional; and Taha Wairua, Spiritual. Te Whare Tapa Whā shows how the 4 areas of a whare interconnect by them being four walls of the Whare that hold each other up and if one falls down they all fall down. This interrelating concept connects with a person as how when we go for a run we are getting physical, we get a break from everything, we may see others and our spirit feels better. 

Today in Health we played the rubber band and cups challenge. The aim of the game was to use five pieces of string and rubber band, always holding the string, not being able to drag the cups or touch the rubber band and move the cups to the other side of the table.. 

My hauora was positively affected during the game as I got to get into problem solving. This had a positive impact on my hauora because when solving issues it puts your mind to work and get’s you thinking.

My hauora was negatively impacted when having to race others and try to tie the string. This had a negative impact on my hauora because it was stressful and it’s hard to work well in high stress situations. 

It is important to understand that you have to work quickly and try to communicate quickly, when participating in a game with others you need to voice your opinions quickly, this is because you don’t want it to end chaotically or spend to much time trying to finish it.

Marshmellow tower.

Kia ora welcome back or welcome to my blog. Today I will be talking about the marshmallow tower activity I did in health.

There are four areas of hauora and they are, Taha Whanau, family; Taha Tinana, Physical; Taha Hinengaro, Mental and Emotional; and Taha Wairua, Spiritual. Te Whare Tapa Whā shows how the 4 areas of a whare interconnect by them being four walls of the Whare that hold each other up and if one falls down they all fall down. This interrelating concept connects with a person as how when we go for a run we are getting physical, we get a break from everything, we may see others and our spirit feels better. 

Today in Health we played the marshmallow tower game. The aim of the game was to use twelve marshmallows and eight skewers to make the tallest tower in your set amount of time. 

My hauora was positively affected during the game as I got to get in on hands-on activities and work with others. This had a positive impact on my hauora because working in hands on activities you get to get physical and creative, it gives your mind and exercise.

My hauora was negatively impacted when it got really loud, and it seems that nobody could agree on something. This had a negative impact on my hauora because It was really loud and I felt that I wasn’t doing well socially. 

It is important to understand that you have to work with others that may not agree with you or work well with you, when participating in a game with others you need to learn how to voice your opinions kindly, give others chances and be patient, this is because if you do not you end up with arguments and don’t feel comfortable.

 

Mixtures

Kia ora welcome back or welcome to my blog. Today I will be talking about mixtures. A mixture is a substance made by combining other substances together. Some examples may be tea, coffee, coke, salad, sand Ect.

Dissolving is when you try to mix a solid up into a liquid until it disappears. Think about adding salt to water.

Solute- the solid you are trying to dissolve.

Solvent- The liquid.

Solution- The mixture created.

How could you speed up dissolving?

  1. Adding heat/ hot water.
  2. Stirring the mixture.
  3. Shake the mixture.

Key words we have learnt:

  1. Mixture: Two substances mixed together.
  2. Dissolving: When you mix a solid into a liquid.
  3. Solute: The solid you are trying to dissolve.
  4. Solvent: The liquid.
  5. Solution: The mixture created.

4 things that are soluble in water :

  1. Salt.
  2. Coffee.
  3. Sugar.
  4. Flour.

4 things that are insoluble in water:

  1. Plastic.
  2. Glass.
  3. Metal.
  4. Wood.

Salt dissolving experiment:

Aim: To see which of the three beakers of salt dissolved the fasted.

Equipment:

  1. Three beakers.
  2. Salt.
  3. Hot/cold water.

Method:

  1. Fill two beakers with hot water and one with cold tap water.
  2. Place salt into all three beakers, timing how long it takes to dissolve.
  3. Stir one of the hot water beakers to quicken the process of dissolving.

What method was the fasted?

It was the hot water and stirring method. It only took a couple seconds for the salt to dissolve whilst the others weren’t done.

Saturated solution:

A saturated solution is when the solvent does not absorb any more of the solute.

Effect of Heat

Kia ora welcome back or welcome to my blog. Today I will be talking about the experiment I did this year on effects of heat.

Contraction Imploding can:

To see the effects of contraction we did an imploding can experiment. Contraction is when water heats up, it looses density and falls to the bottom, cooling down and then heating up again and causing a cycle. We boiled water in a tin can, then using tongs we turned the can upside down and put it a quarter on the way into a tub of cold water. The hot water since less dense went to the bottom of the tub. The water moved so quickly causing a vacuum like affect causing the tin can to implode.

Conduction, dropping pins experiment:

Conduction is when heat moves through a metal, because the particles are vibrating more causing the other particles to vibrate and heat up. An experiment to prove this is the vaseline and pins experiment. We took a metal rode and stuck pins to them with vaseline. As the metal rode heated up and the conduction  happened the vaseline would melt and the pins would fall.

Diffusion, potassium permanganate spread:

Diffusion is a gas travelling to another place. An experiment to prove this is potassium permanganate in water. You put the crystal in a petri dish, and watch as the purple spreads and turn the water purple.

Evaporation, boiling ice:

Evaporation is when water is boiled to a point when it turns into a gas. To see this we heated up ice and water and watch the ice melt and water boil.

Expansion, ball and hoop:

Expansion is when you heat up the metal and the particles are vibrating so much the metal gets bigger. To show this we heated up a metal ball and hoop. The ball before heating up could fit in the hoop but since expansion exists after heating out up it would not fit in the hoop. We then put it under cold water to cool it down, then it could fit in the hoop.