I wonder why we can't stop the earth from spinning?

The only way to stop earth rotation is to lose the angular momentum it has. It would take millions of years to naturally stop the Earth's rotation. Practically, this case is not possible as earth is present in absolute vacuum and there is no way that something would provide any friction or force to reduce its momentum. Before this time comes Earth would've already been engulfed or say vapourised by our sun as it would have also been then transformed into a red giant. A way to quickly try to stop earth rotation is we need to apply a massive external force but there is no way earth would stop spinning even after applying any external force as it would only increase or decrease the rate at which it is spinning. So earth will keep spinning infinitely. 

I wonder why do we dream?

When you're sleeping your brain cycles back and forth through the various stages of sleep four to five times. Most dreaming occurs during the stage of deepest sleep, called "Rapid Eye Movement" or "REM". Our eyes move around quickly under our eyelids. Before they only believed that dreaming occurs in REM but they now believe that dreaming can happen in any stages of your sleep. Experts haven't found proper evidence why we dream but they have developed theories such as dreaming is a way of solving problems and a way to process all the events and emotions that occurred that day. But other researchers think that this is just a body function much like blinking and burping. 

Now, this makes me wonder if our dreams can predict our future?

Acid carbonate+ Carbonate --------- Salt+Water+Carbon dioxide expirement

Equipment:

• 50g of sugar 
• 1 tablespoon of golden syrup
• 1/2 teaspoon of bicarbonate soda   
• 1/2 tablespoon of water

Method:

• Put the ingredients except for the bicarbonate soda into a saucepan and place on a low heat
• Stir until all the sugar has dissolved. Raise the heat slightly so that it bubbles, and stir occasionally until you cannot feel any sugar at the bottom of the pan
• Take off heat
• Add bicornate of soda and stir!
• Watch what happens- it should all froth up with bubbles in the pan
• Pour out into your tinfoil sheet
• Allow to cool 

Observation:

carbonate reacting with carbon dioxide and we trapped the bubble in the hokey pokey

Acid carbonate + Carbonate                Salt+Water+Carbon dioxide

Carbon dioxide experiment

Aim: To show that carbon dioxide gas is produced when a metal carbonate reacts with acid.

Method:

1. Light your Bunsen burner
2. Ass a 'pea-sized' amount of metal carbonate into one of the boiling tubes.
3. place the boiling tube into a test tube rack. Ensure you have the bung and delivery tube ready
4. Add 5 mL of acid to the boiling tube and quickly insert the bung and delivery tube into the mouth of the boiling tube.
5. Holding the other boiling tube with your tongs, capture the gas produced as shown in the diagram below.
6. When you think the tube is full, your lab partner should light a wooden splint
7. Carefully remove the boiling tube from under the delivery tube, taking care to keep it facing upright
8. Insert the burning splint into the mouth of the test tube.

OBSERVATION:

E1 - When we put the burning splint in the test tube, it got extinguished due to the presence of carbon dioxide.

E2 - We also tried it with lime water. The lime water turned from colourless to cloudy and it starts bubbling.

Is public art a waste of time and money

Science Expirement

Aim: TO make a metal oxide and observe the difference in properties of the product compared to the reactants.

Equipment: Magnesium, Bunsen burner, safety glasses, metal scissor tongs.

Method:

-Light your bunsen burner
-Hold your piece of magnesium in the scissor tongs. Ensure you are holding onto the very tip of the magnesium.
-Place the other end of the magnesium into the Bunsen flame (at the top of the blue flame).
-When the magnesium begins to burn, do not look directly at it, as the light emitted can permanently damage your eyes.

Metals	Before	After
Magnesium	Metallic lustre	Bright White Light
Iron		Black
Copper	Bronze	Dark purple/Black

Observation

When the magnesium was held over the top of blue flame it started a bright white light while it was burning. Copper, when it started, was bronze then after it burned it turned Dark purple/Black.

Magnesium + Oxygen          Magnesium Oxide

Iron + Oxygen            Iron Oxide

Copper + Oxygen       Copper Oxide

Testing Hydrogen gas

Testing for Hydrogen Gas:

Aim:
To show the hydrogen gas is produced when a metal reacts with acid

Equipment:
A test tube, a boiling tube, Bunsen Burner, wooden splint, a bottle of acid, a piece of metal, safety glasses.

Method:
1. Light your Bunsen Burner
2. Add your sample of metal to your test tube. Add to mL of acid
3. Carefully invert the boiling tube above the test tube containing the metal and acid.
4. Hold the test tubes together for a few minutes, allowing time for the inverted boiling tube to fill with gas.
5. When you think the test tube is full, your lab partner should light a wooden splint
6. Carefully, but quickly, tilt the boiling tube full of gas upwards and insert the burning splint into the mouth of the test tube.


When the metal went in the acid it started to sizzle a bit forming smoke. After putting the other test tube over it nothing really was occurring. We lit the fire then put it in the test tube. Gas started forming on the rims of the test tube. After displaying that, there was a loud bang-like sound. That's when you know it works.