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When warm air rises, it expands and cools. Cool air can't hold as much water vapor as warm air, so some of the vapor condenses onto tiny pieces of dust that are floating in the air and forms a tiny droplet around each dust particle. When billions of these droplets come together they become a visible cloud.

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When studying speed, distance and time I learned about an easy way to calculate your speed, distance and time. This method is commonly referred to as Daddy's Silly Triangle. This method is very useful and can help you to remember what to do.

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Chemicals Needed:

1. NaOH (Concentration: 0.1M)

2. HCl solution A (Concentration: Unknown)

3. HCl solution B (Concentration: Unknown)

4. Phenolphthalein Indicator

5. Deionised Water

Procedure:

1. Set up apparatus as shown.

2. Add a few drops of phenolphthalein indicator to the NaOH in the conical flask. (Note colour)

3. Allow the HCl to flow from the burette into the NaOH in the conical flask.

4. Add the HCl drop by drop until the solution in the conical flask changes colour. (Note colour)

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Titration is used to determine the unknown concentration of a known substance.
Apparatus Needed:

1. Retort stand

2. White tile

3. Burette

4. Pipette

5. Pipette filler

6. Funnel

7. Wash Bottle

8. Conical flask

9. 3 Beakers

10. Dropper

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Why does rain drops run up the windscreen of a car when driving?

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Why does rain drops run up the windscreen of a car when driving?

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This is caused by the aero dynamics of the wind hitting the car. As the car drives through the rain the that pushes against the car causes the rain to travel in the same direction as the wind

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Water can actually do three things with fire:  Feed it, not affect it, or quench it, depending on the fuel.
For burning solids, such as paper, wood, or coal, water will extinguish the fire.

For burning liquids, such as gasoline, kerosine, cooking oil water will not help because the liquids are less dense than water and will simply float on top.

Burning metals are very different.The most familiar example of a burning metal is elemental magnesium.  When you try to put out a magnesium fire with water, the magnesium will react with the water to produce hydrogen and the hydrogen will then ignite.

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Don't use water to put out a grease fire! Firefighter shows what happens. Don't try this at home.

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Thunder is caused by lightning. When a lightning bolt travels from the cloud to the ground it actually opens up a little hole in the air, called a channel. Once then light is gone the air collapses back in and creates a sound wave that we hear as thunder.

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Yellow or green mucus is a clear sign that you have an infection, but despite that common misperception, the yellow or green hue isn't due to bacteria. When you have a cold, your immune system sends white blood cells called neutrophils rushing to the area.

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A clear cloudless day-time sky is blue because molecules in the air scatter blue light from the sun more than they scatter red light. When we look towards the sun at sunset, we see red and orange colours because the blue light has been scattered out and away from the line of sight.

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A catalyst is a substance that speeds up or slows down a reaction without altering the reaction

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Acids neutralize bases in a neutralization reaction. An acid and a base combine to make a salt and water. The PH scale is used to measure how strong or weak an acid or a base is

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When heated, the atoms of each element in the mix absorb energy, causing its electrons to rearrange from their lowest energy state to a higher "excited" state. As the electrons plummet back down to their lower energy state, the excess energy gets emitted as light.

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If the gunpowder is confined in some way, the gas is not released harmlessly. Instead, it explodes in firecrackers or other fireworks the cardboard shell of the firecracker explodes with a loud popping sound when the chemical burning reaction releases the gas.

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Blood in your veins has very little oxygen and is a dark red color that looks almost blue when covered by your skin.

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The exact reason for Deja Vu is unknown but there are many different theories.  The 3 main theories are explained in this video and are involved with Duel processing,a malfunction in The nervous system and a false sense of familiarity because some elements are familiar and you just haven't realised it

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When learning about speed, distance and time we used map my run to track how far and how fast I was travelling. This helped me to learn how to calculate and find out my average speed

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Since oil is a lipid, it does not freeze in the typical way freezing usually occurs, according to scientists at the University of Illinois. Lipids do not freeze, but the molecular movement slows down at colder temperatures.

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Snow is formed when temperatures are low and there is moisture - in the form of tiny ice crystals - in the atmosphere. When these tiny ice crystals collide they stick together in clouds to become snowflakes. If enough ice crystals stick together, they'll become heavy enough to fall to the ground

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To Measure the Rate of Oxygen Gas Production

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To Measure the Rate of Oxygen Gas Production

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Preparation Of Oxygen Using Hydrogen Peroxide

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Theaurora borealis (northern lights) form when charged particles emitted from the sun during a solar flare penetrate the earth's magnetic shield and collide with atoms and molecules in our atmosphere. These collisions result in countless little bursts of light, called photons, which make up the aurora.

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How The Northern Lights Are Created VIDEO

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Balancing Chemical Equations Practice Problems

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How to Balance Chemical Equations (Simple Method for Beginners)

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An easy method for beginners to learn how to balance chemical reaction equations using simple drawings.

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The Columbia Space shuttle disaster occurred on February 1st 2003 when Columbia disintegrated over Texas and Louisiana as it re-entered the Earth's atmosphere at a speed of 24.1 Mach (25594.2 Km/h)

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NASA Gives Graphic Details of Columbia Deaths

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RARE! Space shuttle Columbia Explosion footage

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On February 1st, 2003, the space shuttle Columbia disintegrated during its re-entry into the atmosphere. The seven astronauts were killed. 82 seconds after the launch of shuttle (STS-107), a sizable piece of foam struck the leading edge of Columbia's left wing, at a speed between 650 and 950 km/h, making a hole in the protective tiles made of reinforced carbon-carbon (RCC), close to the landing gear area.

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Why Does Glue Not Stick to the Inside of the Bottle?

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Why Does Glue Not Stick to the Inside of the Bottle?

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This process is called mechanical adhesion. So why doesn't white glue stick to the inside of the bottle? When white glue is inside a bottle, there's not enough air inside the bottle to cause the water to evaporate to make the glue sticky. Basically, the bottle protects the glue from the air and keeps the glue runny.