Rates of Reaction

Rates of Reaction

Experiment 1

Aim:

I want to investigate how temperature effects the rate of reaction

Equipment:

• Conical Flask
• Beaker
• Measuring Cylinder
• Stopwatch
• Black cross on paper
• Water Bath
• Thermometer
• 0.1 moL-1 Sodium Thiosulfate
• 1.0 moL-1 Hydrochloric Acid (HCl)

Method:

• Put the 'X' paper on the bench mat and out the conical flask on top of the paper.
• Measure 50 mL of sodium thiosulfate solution and put it into the beaker.
• Record the temperature of the sodium thiosulfate.
• Measure 5 mL of HCl and pour it into the conical flask.
• Pour the thiosulfate into the conical flask, start the stopwatch and swirl the flask. Time how long it takes for the cross to dissappear when viewed from above (i.e. look down the mouth of the concical flask.
• Wash out the flask thoroughly.
• Repeat the experiment, using a water bath to heat the sodium thiosulfate to 30 degrees then 40 degrees and finally 50 degrees. Keep the volume of acid the same each time.

Results:

Temperature (degrees celcius)	Time (seconds)
20	27
30	8
40	7
50	5

Conclusion:

In this investigation, I found that heat has an effect on the rate at which two reactants, react. By increasing the temperature of the reacting chemicals, it causes the particles to move faster, therefore forming a faster reaction speed.

Experiment 2

Aim:

I want to investigate how concentration has an effect on reaction time.

Equipment

• Conical Flask

• Beaker

• Measuring Cylinder

• Stopwatch

• Waterbath

• Paper with a black cross "X"

• Thermometer

• 0.1mol/L Sodium Thiosulfate

• 2.0mol/L Hydrochloric Acid

Method:

1.  Put the piece of paper with the 'X' on the bench.
2.  Measure 10mL of Sodium Thiosulfate and put it into the conical flask.
3.  Measure 40 mL of Water and put it into the conical flask. Swirl to mix.
4.  Measure 5mL of HCl.
5. Pour the HCl into the conical flask, start timer and swirl the flask.
6. Stop timing when you can no longer see the 'X' on the paper underneath the conical flask.
7. Wash out flask thoroughly.
8. Repeat experiment:

20mL of Sodium Thiosulfate and 30mL of Water

30mL of Sodium Thiosulfate and 20mL of Water

40mL of Sodium Thiosulfate and 10mL of Water

50mL of Sodium Thiosulfate and no Water

Results:

10mL Thiosulfate/40mL Water - 239 seconds for the 

Art History - Level 1

Swamped by Peter Doig

Oil on a canvas - 77.5 x 95 inches (197 x 241 cm)

This piece of artwork from Peter Doig, is of the Magic Realism genre, sharing an eerie feel with it's audience. Within this oil painting, we see a 'swamp land', including a background coated in trees, along with a lake, holding a reflection which confuses the eye with a complex paint application. There is an intentional want for a romantic, but uncertainty. The main focus is on the canoe, in the sense that it stands out - the use of white as the colouring is very effective. However, the shape of the canoe gives off a slightly fake impression, also because of the impeccable, yet so simple painting of the canoe, having a perfect reflection. Also, by using a single, motionless canoe as a staple piece, it sends questions to the audience - Why is there a canoe sitting in the middle of the lake? Also seen, are tree stumps, scattered through the artwork, as well as the trees of the background casting shadows into over the lagoon. Peter Doig successfully uses the concept of a reflective surface to portray a magical, but meticulously realistic image.
Also, if you closely below the moon in the painting, there looks to be a small structure - like a cabin. Is there someone in there? That was my first thought when I finally recognised, after many times of looking at it, that there was actually something there. It has made me realise, that a lot more can be seen if you keep looking.

Doig has explained that in this piece, that the use of reflection helped to create a wider image than what would have been intended. "The mirroring opened up another world. It went from being something like a recognisable reality to something more magical" is how Doig described this artwork.

Peter Doig has mentioned that a lot of his work is inspired by what he has seen in photographs, or things which he has photographed. What he does, is takes the image and recreates it through the eye of magic realism. His final pieces are intentionally made to look slightly disorientated in order to support the magic realism feel. Rather than using new oil, he prefers to use it from old tubes and tins, as a way of gaining inspiration for texture in his work.

There are techniques which Doig has used in Swamped that shows how he works well with different textures. Using oils, he painted this piece on quite a large landscape canvas (197cm x 241cm). He seems to have used brushes of different sizes, but it also looks as though he has used the edge of a palette knife to form finer lines in the artwork.
The colours used to create this artwork really add to the magic realism effect. It also looks as though Doig has flicked red, yellow, and white coloured oil paint off his brushes to give a speckled effect. It also looks as though he has used the edge of a palette knife to form fine areas - like the thin tree branches - in the artwork.

Few questions arise when viewing this artwork. When looking at it briefly, there are obvious questions making a point, however, if you were to look further into detail, there is a lot more behind the main objects.

Year 11 Art - 6

Ideas for my portfolio

To start off with, I really struggled with finding a way of starting off my portfolio. I began with drawing, and I came to find that I was drawing and shading what looked like tangled thorns. From there, I was guided into the direction of Celtic patterns. Celtic patterns are a range of knots which have been stylized into looking organised and were originally implemented in religious monuments by the Celts - a group of people. It is believed that the 'Celtic' reference, is aimed toward the European Iron Age. Celtic art is seen as the product of the growth of Christian religion in early Britain and Ireland, when they combined with the native styles of Mediterranean influences.

Celtic circles are known as one of the earlier designs and are believed to represent a 'life-force'. Celtic knots are seen more in Christian manuscripts and are formed with the idea in mind to keep a continuous connection throughout the line. Celtic key patterns, can be recognised as spirals in straight lines.
  

The drawing which I have already begun to draw, is a disorganised mix between the Celtic circles and knots. With my work, I am hoping to make my version through tangled thorns in the center of the surface, and the further out, the more separated and organised the thorns will look.
When it comes to producing these patterns in my own work, I hope to use more shading, rather than using the bold shades of black and white. I would like to show more depth and texture in my work. I am wanting to gain an a emotive response through my portfolio, and I think that be working with the Celtic art idea, I could work around with possible colour and different paint application to draw more meaning out of it. Even though I personally don't have a strong religious background, I feel that this could start off my work.

Reading Blog - Practice

Title: The Milgram Experiment
Text Type: Article
Author: Saul McLeod

The Milgram Experiment by Saul McLeod, is an informative article about Stanley Milgram's study on human obedience. To help Milgram's research, he conducted an experiment where he would found out how long people would follow a figure of authority and their instructions, even if it meant hurting hurting another person.

This article gave me a strong insight of how other people feel about a subject which matters to them.  The text states that "Milgram was interested in researching how far people would go in obeying an instruction if it involved harming another person" and that basically explains his reasoning for going ahead with the experiment. Reading about this specific event, made me realise that people are actually willing to go ahead a do what they want just because they are curious enough to do so. It can sometimes be seen as a good thing, however, I feel that this can also be proven as dangerous for some sort of ideas which pop into the heads of people.

Along the lines of danger, and how the ideas which some people may have with their great curiosity, there is a real reason for why Milgram wanted to go under way with conducting this research. This can be seen in part of the aim of the article, where it stated that "He wanted to know how easily ordinary people could be influenced into committing atrocities, for example, Germans in WWII". This allows us to see a deeper part of Milgram's thinking and how he wanted to know about something, which should've been taken care of much earlier. Hitler was a very powerful man, but his rise was mainly successful due to his persuasive speaking skills. Just be speaking with great force behind his words, people followed, and people were forced into following him.

English - Song Lyrics

Music Lyrics - Similes & Metaphors

She's Always a Woman by Bill Joel

She can kill with a smile
She can wound with her eyes
She can ruin your faith with her casual lies
And she only reveals what she wants you to see
She hides like a child
But she's always a woman to me

She can lead you to love
She can take you or leave you
She can ask for the truth
But she'll never believe
And she'll take what you give her as long as it's free
Yeah, she steals like a thief
But she's always a woman to me

[Chorus:]
Oh, she takes care of herself
She can wait if she wants
She's ahead of her time
Oh, and she never gives out
And she never gives in
She just changes her mind

She will promise you more
Than the Garden of Eden
Then she'll carelessly cut you
And laugh while you're bleedin'
But she'll bring out the best
And the worst you can be
Blame it all on yourself
Cause she's always a woman to me

[Chorus:]
Oh, she takes care of herself
She can wait if she wants
She's ahead of her time
Oh, and she never gives out
And she never gives in
She just changes her mind

She is frequently kind
And she's suddenly cruel
She can do as she pleases
She's nobody's fool
But she can't be convicted
She's earned her degree
And the most she will do
Is throw shadows at you
But she's always a woman to me

"she steals like a thief" - simile

Year 11 Art - 5

Planning my Portfolio

So far, I started to plan my portfolio. My idea is to draw emotion from the audience. In order to gain an emotional response, I'm wanting to start off by working with different textures. So I will be beginning with square blocks trying different forms of textures. I'm using Vincent van Gogh's work to give me a few ideas on the kind of textures I want to use. He used quick but expressive brushstrokes, but also used intense colour to help show how passionate he was about the art he created. I'm also heading in the direction of abstract art. I feel that this genre of art, could hold a deep meaning, attempting to draw out an emotional response.

Year 11 Art - 4

Monday 27 February



Swamped
Artist: Peter Doig
Year: 1990
Medium: The medium used in this work is oil. It is applied with brushes with fine strokes to a canvas.
Genre of art: Pastoral
Period: This artwork is from the time of Magic Realism time period

I chose to look further into this piece of artwork, because the purpose of some areas within the work, leave me questioning. Why is the reflection of the forestry different to what is displayed on land? Why is there short tree stumps in the reflection which look incomplete? And one that really gets me is, why is there a canoe in the water, with no one actually using it.