Endothermic

In science we explored endothermic reactions.

First we poured water onto a wooden block. 

We then mixed Barium Hydroxide and Ammonium Chloride together in a beaker with a spatula. The Barium Hydroxide was white and looked like snow. And the Ammonium Chloride was white too but it looked like big pieces of salt.

We then mixed the two substances together and it started to become more like liquid. The beaker also became very cold.

The reason it became cold was because the chemicals absorbed the surrounding heat for the reaction.

 

The scientific equation

Ba (OH)2  (aq) + 2NH4 CI (aq) →  BaCI2 (aq)  +2NH3 (g) + H2O (1)

 

When we mixed the two salts together one of the things we made was water.

Describe what ahurea/culture means in your own words?

-There are lots of different cultures in the world some could do with a celebration some could be with you life or your hobbies, Like when I went to Fiji on my boat last year most islands we went to, we would have to go see the chef and we would have to bring this root called kava and kava is like alcohol and money to them but really it’s just a root, The length of it has to be just over a foot and a bit the people rap it for you to make it look nice for the chef of the island mostly the really remote islands because they are the ones that keep their culture\tradition going and if you don’t do this you might get kicked out of the bay or they might give you a fine.

                                                                               

           Kava                                                                                               Kava root

 

Identify the aspects of culture

– Some aspects of cultures could be Language, Religion or style like Traditional Clothing, Music, Dances, Religious Ceremonies and Culinary feeds like hangi. It is a traditional New Zealand Maori method of cooking using heated rocks buried in a pit oven, called a umu. And also Maori use songs and dance to express their whanau, Adventures history and most of this is in Kapa Haka, Kapa Haka can explain lots. 

                                                   

               Kapa Haka                                                                                              Hangi

                                                       

                                                               Hangi under the ground

 

Explain the relationship between tuakiri and ahurea

– Tuakiri means your personality your identity what makes you special.

  – Ahurea means culture, tradition, something so important to your family or your people that has been happening for a long time.  

 

Exploring Chlorophyll Fluoresence

To do this experiment we needed to get some supplies,

-We needed three leaves, Conical flask, Test tube, Funnel, Mortar, Pestle, iso-propyl-alcohol, UV light and filter paper.

-To get the Chlorophyll from the leaves we had to cute the three leaves into little pits and put it in the Mortar with some iso-propyl-alcohol and crush it up with the Pestle, We crush it up for about 10 minutes until it was the colour of a green e2.

Once it looked like that we got the filter paper and put it in the funnel and poured the Chlorophyll in and wanted it the filter through and once it was done it looked like nice clear green water.

-We then put the test tube of Chlorophyll in a dark place of the class room and shined a UV light on it, It started glowing this red colour and it was like there was glitter in it.

– The reason why the Chlorophyll turned red when the UV light shined on it was because the Chlorophyll absorbed all the other colours of ROY-G-BIV (Red, Orange, Yellow, Green, Blue, Indigo and Violet) except for red. The red light is reflected into our eyes that’s why we see the chlorophyll solution as a red glow.

 

-In conclusion, I thought it was cool how all of the chlorophyll can be extracted from the leaf.  When we shined the UV light on it, the chlorophyll came out as a totally different colour which was suprising.