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Results from the oxygen production experiment 

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Results from the oxygen production experiment 

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After 30 seconds the volume of oxygen = 20cm3
After 60 seconds the volume of oxygen = 40cm3
After 90 seconds the volume of oxygen = 50cm3
After 120 seconds the volume of oxygen = 60cm3
After 150 seconds the volume of oxygen = 75cm3
After 180 seconds the volume of oxygen = 85cm3
After 210 seconds the volume of oxygen = 100cm3

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The aurora 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. Collisions with oxygen produce red and green auroras, while nitrogen produces the pink and purple colors. This reaction encircles the polar regions of the earth and occurs at an altitude of 40-400 miles (65-650 km) in a zone called the "Auroral Oval."

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Daddy's Silly Triangle

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What Causes The Northern Lights? (Aurora Borealis)

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The aurora borealis or northern lights is one of the most spectacular natural displays on the planet. Theories about its origins have been debated for centuries and common misconceptions persist that the aurora is the sun's rays scattered off ice crystals in the high atmosphere.

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Balancing chemical equations | Chemical reactions and stoichiometry | Chemistry | Khan Academy

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Snow occurs when water vapors in the air freeze before they can turn into water. This happens when the temperature in the clouds is very cold. Snowflakes are made up of crystals of ice that have formed around bits of dirt in the air. The snowflakes start out very small and grow. Each snowflake is different and might contain up to 200 crystals.

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A short educational video about the formation of snow.

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A catalyst is substance that cause a chemical reaction to speed up or slow down. the substance is not used in the reaction.

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0:00 / 3:33•Watch full video

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What Are Catalysts? | Reactions | Chemistry | FuseSchool

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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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Hydrogen peroxide naturally breaks down into oxygen and water but this reaction could take a while so we used manganese dioxide as the catalyst.

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Mach 1 = 1062 km/h
Mach  is the speed at which sound travels at.

When the Space Shuttle Columbia crashed it was travelling at Mach 24.1 at the time of their re-entry into the Earths atmosphere.

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Mucous-producing cells at the neck of the gastric pits create a layer of protective mucous covering the stomach lining. This mucous layer includes bicarbonate ions which act as a chemical barrier against the protons in gastric acid.

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All 7 members of the crew where killed during the disaster.

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The Space Shuttle Columbia disaster occurred on February 1, 2003, when Columbia disintegrated over Texas and Louisiana as it re-entered Earth's atmosphere, killing all seven crew members.

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1st titration: 49.5
2nd titration:50

Average titration volume:49.75

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1st titration: 26
2nd titration:25.5

Average titration volume:25.75

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Neutralistion occurs when an acid and base react. Salt and water are formed during this reaction.

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Procedure for we followed during the titration 

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Procedure for we followed during the titration 

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Step 1: Set up apparatus as shown.
Step 2: Add a few drops of phenolphthalein indicator to the NaOH in the conical flask.
Step 3: Allow the HCL to flow from the from the burette into the NaOH in the conical flask
Step 4: Add the HCL drop by drop until the solution in the conical flask changes colour.

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Titration is a technique used to determine the unknown concentration of a known solution.

The aim of this experiment was to use a standard solution of Sodium Hydroxide to distinguish between two samples of Hydrochloric acid of different concentrations.