Category Archives: Grade 10
The Negro Speaks of Rivers Poetry Response
I believe Langston Hughes’ poem, ‘The Negro Speaks of Rivers’, is the best at clearly conveying the message he was trying to show about his African American ancestors. Through the use of metaphors, allusions, similes, and personification, Hughes was really able to show the sense of pride he has for his race and all of their accomplishments. The mood of the poem is very empowering, sullen, and nostalgic, which the readers can quickly pick up on. Though the poem is short, the audience gets a very clear understanding of the message because Hughes uses many allusions to historical places, events, and people, that are relevant in the history of African American people. For example, in the line ‘I looked upon the Nile and raised the pyramids above it’, he was talking about his ancestors that built such beautiful monuments which are known today as one of the seven wonders of the world. People today have so much respect for these pyramids, and so Hughes was showcasing the fact that it was an accomplishment of his people. The line, ‘I heard the singing of the Mississippi when Abe Lincoln went down to New Orleans…’ Is an allusion to the freeing of the African American slaves. Hughes mentioned this in the poem because this was a huge event in the history of slavery in America, and even though his ancestors have suffered and went through those terrible times, change was finally issued and they were able to abolish slavery.
With these examples, the readers can see the sense of pride Hughes was trying to show for African American people. The poem is very powerful and gets the message across.
Endothermic/Exothermic Science Lab
NAME: VIKTORIYA BLK: C
Exothermic & Endothermic
Reactions Lab
Purpose: To determine whether a reaction is Endothermic or Exothermic.
Hypothesis: If heat is lost to the surroundings and the products contain less energy than the reactants, then the reaction is exothermic. If heat is taken in or absorbed from the surroundings and a temperature decrease is measured, then the reaction is endothermic.
Part I:
Materials: 120 ml of Hydrogen Peroxide, 60 ml of liquid dish soap, 4 drops of blue food colouring, 2 glass beakers (one 250 ml, one 75 ml), 7 grams of yeast, 30 ml of warm water, digital scale
Procedure:
1.) Mix 120 ml of hydrogen peroxide (H2O2 aq) with 60 ml of liquid dish (OI- aq) soap and a few drops of food coloring in a beaker.
2.) Gently swirl the mixture and place the beaker in the sink.
3.) In a separate container, mix 7 grams of active yeast with 30 ml of warm water, and let it sit for 5 minutes.
4.) Remove clumps of yeast so you just add the liquid.
5.) Pour the yeast mixture into the beaker in the sink and record the reaction.
6.) Feel the area surrounding the container for heat to determine whether the reaction is Exothermic or Endothermic.
7.) All contents can be disposed of down the sink.
8) Rinse sink and make sure all materials are thoroughly washed, rinsed, and placed back in your designated bin.
Observations:
In this reaction, the Hydrogen Peroxide and the dish soap were reacting with the liquid from the yeast mixture to create an exothermic reaction. The reaction was exothermic because it released heat to the surroundings, making the air around it hot while the products got colder. Hydrogen Peroxide and Detergent were the Reactants. Iodide, water, and Oxygen were the products.
2H202(aq)—2H20(l)+02(g)
This is a decomposition reaction, because it contains one compound of multiple elements that breaks down into two separate compounds where the elements are split between them. (It follows the format AB-A+B)
An aqueous compound is broken down into two separate compounds, one of which is liquid and one of which is gas.
Part II:
Materials: 400 ml glass beaker, 2 Alka-Seltzer tablets, glass thermometer, 100 ml of room-temperature water
Procedure:
1. Fill beaker with 100 ml of water.
2. Record temperature of water for 30, 60, 90, 120 seconds in spreadsheet below.
3. Keep thermometer in container
4. Add 2 Alka-Seltzer tablets to the 100 ml of water.
5. Record temperature for 30, 60, 90,120 seconds on spreadsheet.
Observations:
Time in Seconds (H2O) Temperature (Degrees Celsius)
0 19
30 19
60 19
90 19
120 19
Time in Seconds (Alka-Seltzer) Temperature (Degrees Celsius)
0 18
30 17
60 17
90 17
120 17
RESULTS:
The reaction below is an example of a neutralization reaction because it contains an acid and a base in the first part that neutralize each other to produce a salt. The acid is the citric acid, the base is the sodium bicarbonate. The two react with each other in order to create water, carbon dioxide, and sodium nitrate (which is the salt).
___ C6H8O7(aq) + NaHCO3(aq) → H2O(l) + ___ CO2(g) + ___Na3C6H5O7(aq)
citric acid + sodium bicarbonate → water + carbon dioxide + sodium citrate
Conclusion:
This experiment investigated the difference between exothermic and endothermic reactions, and how the both of them react. It also demonstrated how both reactions lose or gain energy in the form of heat.
The problem was demonstrated by conducting two separate parts in an experiment which contained one exothermic reaction and one endothermic reaction. In the first part, a mixture of Hydrogen Peroxide, dish detergent, warm water, and yeast were mixed in order to create a reaction which gave off heat to its surroundings. The reaction turned into a completely different substance altogether, something very foamy and thick. The heat from the substance was prevalent and could be both felt and seen with the vapor it gave off. In the second part, the temperature of water was recorded before and after adding 2 Alka-Seltzer tablets to see whether or not the temperature would be affected over a span of 120 seconds after the tablets were added.
The results showed that the first part that was conducted demonstrated an exothermic reaction, as heat was lost from the products into its surroundings, which is why the foam that was created felt hot to the touch. The second part resulted in an endothermic reaction. The fact that the water got colder evidenced that heat was not being given off from the reaction, but instead was being absorbed.
The original hypothesis was supported through the experiment because the statement was that ‘If heat is lost to the surroundings and the products contain less energy than the reactants, then the reaction is exothermic. If heat is taken in or absorbed from the surroundings and a temperature decrease is measured, then the reaction is endothermic.’ The first part demonstrated that the final product of the reaction (the ‘elephant toothpaste’) lost heat and therefore had less energy than the reactants that were mixed together, making it an exothermic reaction. The fact that the air around it was hot proved that the heat was lost during the reaction. The second part resulted in an endothermic reaction, and as the hypothesis states, a temperature decrease was measured. Since the water got colder after adding the Alka-Seltzer tablets, heat was taken in from the surroundings meaning that the reaction of the water and the tablets was endothermic.
Some questions I have about the experiments are ‘How would the chemical reactions of both parts be written out as equations?’ ‘How does an endothermic reaction absorb heat if the temperature of the product decreases?’ ‘Would the first part of the experiment still have had the same results if one element wasn’t included?’ ‘What could be added into water to create an exothermic reaction?’ ‘Are all decomposition chemical reactions endothermic?’ ‘Is it possible for a reaction to be both endothermic and exothermic?’
Science Comic (Chemical Equations)
Of Mice and Men Inquiry Question
Of Mice and Men Inquiry Question
In the novella, Of Mice and Men, by John Steinbeck, the readers get a very good look into life for migrant workers in America during the 1930’s. With Steinbeck’s vivid imagery, detailed characterization, and use of dialogue, we are able to get an understanding of the loneliness and isolation people experienced to help us answer the question, ‘What may be the result of isolation and loneliness?’ Though there are many possible answers, the novella gives insight for at least one of them. One of the characters in the book, Crooks, who has been isolated throughout his whole life, helps answer this question in multiple instances in the novella, such as during his conversation with Lennie in his room. While Lennie is worrying about George not coming back, Crooks says, “You know he’s going to come back. S’pose you didn’t have nobody…A guys needs somebody-to be near him. A guys goes nuts if he ain’t got nobody.” (Steinbeck, pg. 72). This quote showcases that Crooks’ loneliness was affecting him very strongly, to the point where he felt like he was going crazy: “A guy sets alone out here at night…Sometimes he gets thinkin’, an’ he got nothing to tell him what’s so an’ what ain’t so. Maybe if he sees something, he don’t know whether it’s right or not.” (Pg. 73). A result of his isolation was that he craved human company because he didn’t have anybody to keep him occupied or sane, which is why he spent so much time reading books when all he wanted was to have someone else to talk to: “S’pose you had to sit out here an’ read books. Sure you could play horseshoes till it got dark, but then you gotta read books. Books ain’t no good.” (Pg. 72).
Another character that exemplified the idea of loneliness is Curley’s wife, who went around to all of the men in the stables to compensate for the fact that she wasn’t happy with Curley. The difference between Crooks isolation and Curley’s wife’s is that Crooks didn’t have anybody at all which was the cause of his loneliness, but Curley’s wife, even having Curley, felt lonely because he never made time for her: “’I get lonely’ she said, ‘You can talk to people, but I can’t talk to nobody but Curley, else he gets mad. How’d you like not to talk to nobody?’” (Page 87)
She feels the need to find company from others because what Curley gives her is not enough, so her isolation pushes her to flirt with everyone else, resulting in all the man calling her a tart.
Looking at these two examples, the inquiry question can be answered by saying that the result of isolation and loneliness may be self-doubt, like in Crook’s case, where he didn’t know what to believe when he saw things. Another result may be desperately trying to distract oneself through other human connection, such as Curley’s wife.
Healthy Diet Prentation Planning 10
Narrative Essay Reflection
https://1drv.ms/w/s!AjfAyx9efMCBgVT_g67_u4biBNx
In my narrative essay, 2 things I would change for next time is
1) cutting out all of the dead wood-eliminating any unnecessary words, sentences, etc
2) I would use more imagery throughout my writing and really focus on the concept of ‘show, don’t tell’
2 things I thought I did well were
1) I think I had good sentence fluency throughout my narrative; I experimented with both long and short sentences for effect
2) I believe I made the essay really personal and I included a lot of details that I recalled from the events I wrote about
How do humans move past terrible experiences in order to find forgiveness and triumph?
PE 10 Floor Exercise Routine
Observations & Inferences
