## Tuesday, August 29, 2017

### All holiday homework

Riddle of the Day:

A high-density particle lies at the origin of a Cartesian plane. An electron orbits around the particle at X^2 + Y^2 = D. Take the particle to be massless and a point.

Let t be the amount of time

When t = 0, the electron lies at the x axis.

The value of D is given as follows: D = 106.9(0.69)^t -6.9 and D>0
Given that the electron orbits counter-clockwise at a rate of one second per successive phase, meaning 1 round per second,

a) i)find the value of when the electron strikes the particle
ii) if a Tangent were to be drawn at the incidence of the point at which the electron strikes the particle, find the gradient of that tangent of incidence.

Any MT Hw

Chemistry:
- Periodic table P1
- Metals checkpoint 3
- virtual lab

E Maths:
(optional) Acelearning

Biotech:
- Nil

Social Studies:
- AA by this coming Wednesday 2359

A Maths:
- I think it's in GC

English:

History:
- Nil

Geography
- Monsoon winds google document

Physics:

If You haven't already(like me) finish up your theory file

Biology:
- Nil

Design Studies
1. Floor Plan
2. Site Plan
3. Bubble Diagram

4. One point persp.

## Friday, August 25, 2017

### Weekend checklist and new riddle

R
i
ddle of the Day:

Make no mistake
Hearts of stone,
ever marching,
always slaying
bodies littered across the plain
not a drop of blood though many slain
defilers of queens
warriors scarred
marching through your backyard

Any MT Hw

Chemistry:
- Metals Checkpoint

E Maths:
(optional) Acelearning

Biotech:
- Nil

Social Studies:
- AA by this coming Wednesday

A Maths:
- Nil

English:
- Nil

History:
- Nil

Geography
- Watch the videos and complete the document

Physics:

If You haven't already(like me) finish up your theory file

Biology:
- Nil

## Thursday, August 24, 2017

### Homeworks :D to do

R
i
ddle of the Day:

Make no mistake
Hearts of stone,
ever marching,
always slaying
bodies littered across the plain
not a drop of blood though many slain
defilers of queens
warriors scarred
marching through your backyard

Any MT Hw

Chemistry:
- Nil

E Maths:
(optional) Acelearning

Biotech:
- Nil

Social Studies:
- PT

A Maths:
- GC Hw

English:
- Remember to Reflective essay
- Summary Video

History:
- Nil

Geography
- Read up about the Coriolis effect

Physics:

a) Please complete all the following e-Learning tasks by T3W9 Monday (21 August 2017). There will be a Unit Test on EM Waves in T3W9 or T3W10 to test your mastery of the concepts.

1. Flipped lesson on EM Waves (slides)
2. Read the Marshall Cavendish Textbook (pg 274~281)
3. Complete all questions in the Workbook Worksheet 14 (EM Waves)

- Theory and Practical file

- For Daanish- Worksheet 11

Biology:
- Practical worksheet

For Ashley

A Math: New Trig identities, extend your practice

Chem: Metals and making sense of their reactivity

Geog: Wrapping up Land and Sea Breeze

## Wednesday, August 23, 2017

### Wednesday Homework

R
i
ddle of the Day:
A plastic cube 10m x 10m x 10m is dropped into pure water and submerges exactly halfway. Don’t take into account atmospheric pressure, find the density of the cube.

Hint: Search 'Archimedes' principle'
Any MT Hw

Chemistry:
- Metal inquiry activity and checkpoint practice 1

E Maths:
- Nil

Biotech:
- Nil

Social Studies:
- PT
- Inference practice

A Maths:
- GC Hw

English:
- Remember to Reflective essay
- Summary Video

History:
- Nil

Geography
- Read up about the Coriolis effect

Physics:

a) Please complete all the following e-Learning tasks by T3W9 Monday (21 August 2017). There will be a Unit Test on EM Waves in T3W9 or T3W10 to test your mastery of the concepts.

1. Flipped lesson on EM Waves (slides)
2. Read the Marshall Cavendish Textbook (pg 274~281)
3. Complete all questions in the Workbook Worksheet 14 (EM Waves)

- Theory and Practical file

Biology:
- Nil

## Tuesday, August 22, 2017

### Tuesday

R
i
ddle of the Day:
A plastic cube 10m x 10m x 10m is dropped into pure water and submerges exactly halfway. Don’t take into account atmospheric pressure, find the density of the cube.

Hint: Search 'Archimedes' principle'
Any MT Hw

Chemistry:
- Nil

E Maths:
(optional) Acelearning

Biotech:
- Nil

Social Studies:
- PT

A Maths:
- GC Hw

English:
- Remember to Reflective essay
- Summary Video

History:
- Nil

Geography
- Read up about the Coriolis effect

Physics:

a) Please complete all the following e-Learning tasks by T3W9 Monday (21 August 2017). There will be a Unit Test on EM Waves in T3W9 or T3W10 to test your mastery of the concepts.

1. Flipped lesson on EM Waves (slides)
2. Read the Marshall Cavendish Textbook (pg 274~281)
3. Complete all questions in the Workbook Worksheet 14 (EM Waves)

- Theory and Practical file

- For Daanish- Worksheet 11

Biology:
- Practical worksheet

For Ashley

A Math: New Trig identities, extend your practice

Chem: Metals and making sense of their reactivity

Geog: Wrapping up Land and Sea Breeze

## Monday, August 21, 2017

### Study Hard

R
i
ddle of the Day:
A plastic cube 10m x 10m x 10m is dropped into pure water and submerges exactly halfway. Don’t take into account atmospheric pressure, find the density of the cube.

Hint: Search 'Archimedes' principle'
Any MT Hw

Chemistry:
- Metal inquiry activity and checkpoint practice 1

E Maths:
- Nil

Biotech:
- Just Study

Social Studies:
- PT

A Maths:
- GC Hw

English:
- Remember to Reflective essay
- Summary Video

History:
- Nil

Geography
- Finish Google classroom if you haven't done so~ Land and Sea Breeze in terms of pressure

Physics:

a) Please complete all the following e-Learning tasks by T3W9 Monday (21 August 2017). There will be a Unit Test on EM Waves in T3W9 or T3W10 to test your mastery of the concepts.

1. Flipped lesson on EM Waves (slides)
2. Read the Marshall Cavendish Textbook (pg 274~281)
3. Complete all questions in the Workbook Worksheet 14 (EM Waves)

- Theory and Practical file

- For Daanish- Worksheet 11

Biology:
- Practical worksheet

For Daanish

EL: Finished up the worksheet on Use of figurative language, and started on Summary skills by watching a video.

Phys: TOTE worksheets and Workbook and started on waves(Btw rmb to submit worksheet 11)

A math: Learned about more intricate trigonometric unknowns

Biotech: 2016 and 2014 paper

## Friday, August 18, 2017

### Weekend checklist

R
i
ddle of the Day:
A plastic cube 10m x 10m x 10m is dropped into pure water and submerges exactly halfway. Don’t take into account atmospheric pressure, find the density of the cube.

Any MT Hw

Chemistry:
- Metal inquiry activity and checkpoint practice 1

E Maths:
- Nil

Biotech:
- Biotech LT2 2016

Social Studies:
- PT

A Maths:
- Nil

English:
- Remember to Reflective essay

History:
- Nil

Geography
- Finish Google classroom if you haven't done so

Physics:

a) Please complete all the following e-Learning tasks by T3W9 Monday (21 August 2017). There will be a Unit Test on EM Waves in T3W9 or T3W10 to test your mastery of the concepts.

1. Flipped lesson on EM Waves (slides)
2. Read the Marshall Cavendish Textbook (pg 274~281)
3. Complete all questions in the Workbook Worksheet 14 (EM Waves)
Biology:
- Nil

Message to Taekwondo Members

If you have oral tomorrow, feel free to give me to pass to coach. I won't steal any money.

~Brandon

Note: Only a member of this blog may post a comment.

## Thursday, August 17, 2017

### Look at this for lesson summaries

R
i
ddle of the Day:
A plastic cube 10m x 10m x 10m is dropped into pure water and submerges exactly halfway. Don’t take into account atmospheric pressure, find the density of the cube.

Any MT Hw

Chemistry:
- Metal inquiry activity and checkpoint practice 1

E Maths:
- Nil

Biotech:
- Biotech LT2 2016

Social Studies:
- Nil

A Maths:
- Nil

English:
- Remember to Reflective essay

History:
- Nil

Geography
- Nil

Physics:

a) On top of the Level Test paper which must be completed and self-marked before your respective SSP slot, please be reminded to submit your TPOM WS (separately) and TPOM WB to your Physics reps by 14/8 (Mon) latest

This is important so I can return the marked scripts to you during lesson reviews.

Also, a heads up to submit your Practical file next Wed with the Moments Practical and the Thermal Practical filed and your content page filled in.

b) Please complete all the following e-Learning tasks by T3W9 Monday (21 August 2017). There will be a Unit Test on EM Waves in T3W9 or T3W10 to test your mastery of the concepts.

1. Flipped lesson on EM Waves (slides)
2. Read the Marshall Cavendish Textbook (pg 274~281)
3. Complete all questions in the Workbook Worksheet 14 (EM Waves)
Biology:
- Nil

Message to Taekwondo Members

If you have oral tomorrow, feel free to give me to pass to coach. I won't steal any money.

~Brandon

Note: Only a member of this blog may post a comment.

## Monday, August 14, 2017

### Monday

Riddle of the Day:

Any MT Hw

Chemistry:
- Finish up whole exam paper
- Page 2, 3 and 4 of metals.

E Maths:
- Paper recision

Biotech:
- Biotech LT2 2016

Social Studies:
- Nil

A Maths:
- The exam paper

English:
- Remember to reflective essay

History:
- Nil

Geography
- Nil

Physics:

a) On top of the Level Test paper which must be completed and self-marked before your respective SSP slot, please be reminded to submit your TPOM WS (separately) and TPOM WB to your Physics reps by 14/8 (Mon) latest

This is important so I can return the marked scripts to you during lesson reviews.

Also, a heads up to submit your Practical file next Wed with the Moments Practical and the Thermal Practical filed and your content page filled in.

b) Please complete all the following e-Learning tasks by T3W9 Monday (21 August 2017). There will be a Unit Test on EM Waves in T3W9 or T3W10 to test your mastery of the concepts.

1. Flipped lesson on EM Waves (slides)
2. Read the Marshall Cavendish Textbook (pg 274~281)
3. Complete all questions in the Workbook Worksheet 14 (EM Waves)
Biology:
- Nil

Note: Only a member of this blog may post a comment.

## Saturday, August 12, 2017

### Weekend

Riddle of the Day:

Aristotle is approached by a North Korean philosopher for guidance. ' Aristotle, how begot Democritus the concept of atom?' Aristotle replied. ' a man is begotten from a child, which is begotten from an embryo. Matter arises and transitions to shape form and structure we see, and is reduced to the atom, the corpuscle which from all matter arises and transitions, according to its shape and function,  by the laws of the universe. Deforms and abnormalities arise when there is friction or resistance to development as the form arises.'

North Korean philosopher wowed. He asked next, ' so our dear leader, rich of the flesh and the mind, arose from atoms in the beautiful harmony akin to angels' hymns!'

Plato replied, ' Affluent of the flesh indeed! Your leader is a special case, when form arises from indivisible matter in excess and forms a swine hideous as the stunted devil!

Any MT Hw

Chemistry:
- Finish up whole exam paper
- Page 2, 3 and 4 of metals.

E Maths:
- Nil

Biotech:
- Biotech LT

Social Studies:
- Nil

A Maths:
- The exam paper

English:
- English continuous writing critique
- Slides for the visual text photo

History:
- Nil

Geography
- Nil

Physics:

a) On top of the Level Test paper which must be completed and self-marked before your respective SSP slot, please be reminded to submit your TPOM WS (separately) and TPOM WB to your Physics reps by 14/8 (Mon) latest

This is important so I can return the marked scripts to you during lesson reviews.

Also, a heads up to submit your Practical file next Wed with the Moments Practical and the Thermal Practical filed and your content page filled in.

b) Please complete all the following e-Learning tasks by T3W9 Monday (21 August 2017). There will be a Unit Test on EM Waves in T3W9 or T3W10 to test your mastery of the concepts.

1. Flipped lesson on EM Waves (slides)
2. Read the Marshall Cavendish Textbook (pg 274~281)
3. Complete all questions in the Workbook Worksheet 14 (EM Waves)

Biology:
- Nil

## Wednesday, August 9, 2017

### Geog notes + how buffer systems work

Geography notes

Basic rundown:

first, look at this structure of the earth(the width of the crust has been greatly exaggerated)
Heat from the core causes convection currents within the fluid mantle; the lower part of the mantle nearer to the core, upon heating, expands, decreases in density and rises. Thence, the heated mantle material, moving away from the heat source(core), cools down, and it contracts and sinks, causing movement. This process is known as convection, and it can happen within any fluid. The convection within the earth causes plates right above the site of convection to shift away from each other. If you visualize the entire process in a dynamic 3D model, then you can roughly see the powers of plate tectonics.

Movement of the plates can cause the otherwise stationary rock to be put under compressive stress. When the rocks slip, akin to the snap of a mousetrap, energy is released in the form of waves, and are known as earthquakes.

There are 4 types of earthquakes;

- Longitudinal waves
- Sinusoidal waves
- Rayleigh waves
- Love waves

Sinusoidal waves, being as they are, are much more destructive, but slower, than longitudinal ones. Longitudinal waves are faster but less destructive. In certain towns, people position longitudinal sensors around the area. That way, the longitudinal, being less deadly, can strike first and people have time to evacuate when the sinusoidal wave comes.

Volcanoes

Structures of volcanoes are as such: boiling pots of magma known as magma chambers expose magma within to high pressures and temperatures, and travel up through cracks in the earth's crust. Sometimes they enter the surface and cool down, over time forming elevated scopes of land known as volcanoes. Even among volcanoes, there are different types of lava, depending on their viscosity(cite physics here). Stickier, more viscous magma tends to build within itself more pressure and have the more explosive eruptions.

Runnier, less viscous lava tend to have less BOOM eruptions.

Ash, pyroclasts, and gases are ejected during eruptions, they can be hurled into the atmosphere, exist in pyroclastic flow or pyroclastic surges. A few case studies:

Krakatoa

Indonesian volcano, a blast so loud that even residents in Singapore heard its BOOM!

Eyjafjathalökull

The eruption caused the ash to block flight paths. Should such an eruption happen in Singapore, even for a few weeks, billions of dollars could be lost.

Mt. Pelee

Apparently one of the two people who survived this devastating eruption was only because he was in solitary confinement :l.

How Buffers work
Le Chatelier’s principle

Le Chatelier’s system concerns itself with the forward and reverse chemical reactions, denoted with ⇋. Assume we have a system of A + B  ⇋ C + D, and assume they are in equilibrium.

By equilibrium, it means that the rate of forward reactions, that is, A and B combining to form C and D, is equal to rate to the backward reactions, C and D to form A and B.

There are 3 cases of changing this system of equilibrium.

An increase in reactants of A or B or both would generally result in an increase in C and D, and also C and D back into A and B. You are essentially having the same reaction but on a larger scale. If we added A or B singularly, C and D would increase, but the other reactant that wasn’t added, due to increased, a higher rate of forward reaction, would decrease. In Haber process, we use extra Hydrogen because Nitrogen is harder to get, and this maximizes the use of Nitrogen gas in the process.

Less of A or B would result in Forward reaction lessening, and backward remains the same, favoring backward reaction.

First and foremost, do accept the concept of heat having an increased rate of particles colliding with each other as its discrete phenomena with its own consequences, irrespective of the phenomenon I will explain.

In the Haber process, the forward is exothermic, and the backward is endothermic. Both parcels of information are equally important, as you will see soon. Adding heat to the Haber reaction would result in the Ammonia gas having a higher chance and rate to grab this excess heat in a disordered system of molecular collisions and revert back into Nitrogen and Hydrogen gas. The rate of NH3 absorbing heat and turning back into reactants is increased and greater than the forward reaction.

Simultaneously, the reaction to reach equilibrium is faster due to the higher rate of reaction, the Haber process utilises this sweet spot of (how many ºcelsius again?)

The forward reaction to combine the two gases into one gas is favored because it increases the rate of the more abundant Nitrogen and Hydrogen gas into ammonia, while the rate of backwards reaction is constant.

Conjugate acid-base pair.

First and foremost, review Brønsed Lowry’s definition of acid and base(Keep in mind the definition only applies in the context of conjugate acid-base pairs): An acid refers to a substance that has the ability to donate a H+ Ion and a base is one that can accept such an ion. They are a subset of reversible reactions which includes the exchange of H+ ions.

This differs from our definition of a base; a base is one that dissociates to form OH- Ions. The OH- ions are the base here, and the substance that dissociates to form them, in our standard definition, are bases.

With this more general definition of an acid and base, we can give an example of a conjugate acid-base reaction.

HCl + H2O ⇌ H3O+ + Cl-

Cl-, while not a base, accepts a hydrogen plus ion in the backward reaction. It is, therefore, a base(in this context), and HCl an acid; they are a conjugate acid-base pair. Hydronium and water is the other pair.

Application of conjugate acid-bases:

They are used in buffers(solutions that resist PH changes)

Take this system in blood,

CO2(g) + H2O(l) ⇋ H2CO3(aq) ⇋ HCO3-(aq) + H+(aq)

Remember that the H2CO3 is not completely aqueous; it only partially ionizes to form 2H+ and CO32-

Carbon Dioxide is defined as acidic because it reacts with water to produce carbonic acid.
Having more Carbonic acid is generally better than having lots of dissociated bicarbonate ions and H plus ions.

Our body uses buffers too! When we hold our breath, CO2 that is turned into carbonic acid is accumulated in our blood. Acidosis refers to excessive acids(carbonic acid) in our tissues, most commonly lungs. We breathe out CO2, which is acidic, and in turn, H2CO3 decomposes into bicarbonate and H+ ions, and our kidneys release these H+ ions in the form of urine. The reason why urine become more acidic and smelly when we do not drink enough water is that there is more water to dilute Carbonic acid in our urine, and secretes Bicarbonate into the blood.

On the contrary, Alkalosis is managed by withholding urine and the lungs do not secrete as much CO2.

Now, applying Le Chatelier’s principle:

The blood, on top of the above system, also has a self-governing, autopilot system to maintain a PH. a greater concentration of H+ ions would result in a greater rate of  H2CO3(aq) ⇋ HCO3-(aq) + H+ (backward), minimizing the effect of H+ concentration. Excess HCO3- does the same thing!

A more general theory of buffer systems

Buffer systems work on reversible reactions, made understood by Le Chatelier’s principle. They dampen, but not totally prevent, the addition of extra hydrogen ions or basic ions. In a more specific context,
(Let B be a base)
HnB ⇋ B-n + nH+

Moved by the concepts of Le Chatelier's principle buffers are made thus.

Looking at water in a new perspective

H3O+ + OH- ⇋ 2H2O
Protonation refers to giving away a proton, aka H+ ion. Deprotonation is vice versa. It is an example of Autoprotolysis, aka auto(being itself) receives a transfer in protons.

The reason we know these reactions have occurred is that water has an electrical conductivity(most everything does, but the fact that they do tells me that there ARE ions)