Teru+&+Anna

=//__Reactivity lab__//=

__Aim:__ The aim of this experiment is to find out which of the following metals are the most reactive ones ; Iron, aluminum, copper, magnesium and zinc. We will find this out by making them react by putting the powder of each metal in hydrochloric acid, and by observing the amount of gas the reaction creates.

__Variables Table:__ (The amount of gas released) || By measuring the circumference of the baloon using a measure. ||
 * || Variables || How will it be controlled/manipulated? ||
 * Independent Variable || The types of metals || We will use zink, copper, iron, magnesium, aluminum as the metals, all in the form of powder. ||
 * Dependent Variable || The reaction of the metals when put in acid
 * Controls/constants || The amount of metal || Use the spatula and scale to measure 0.5g of the powder of each metal. ||
 * || The amount of hydrochloric acid || Use the graduated sylinder tomeasure 10ml of hydrochloric acid. ||
 * || The time of reaction || Use a stopwatch to measure 1 minuit from when the meatl is dropped into the hydrocholoric acid. ||

__Hypothesis:__ If we put five metals in hydrochloric acid, then Iron will be the most reactive followed by Zinc, Copper, Aluminum and Magnesium, because Iron has 2 rows of open valence electrons and can gain a lot of electrons, which will make it reactive.

__Observation Table :__

The reactivity of five metals Observations || Zinc || ## bubbles coming out. Iron || copper || Aluminum || Magnesium ||
 * 1) Slight color change to black
 * 2) Shape becomes like sponge ||
 * 1) White gas can be seen at the top of the test tube
 * 2) Very reactive
 * 3) Continuously blows bubbles
 * 4) Becomes hot ||
 * 1) Some small bubbles can be seen.
 * 2) Less reactive ||
 * 1) Reacts really slowly
 * 2) Powder is on the surface and doesn’t mix
 * 3) No bubbles can be seen ||
 * 1) Highly reactive at the beginning  ||

 Equipment

1. Test tubes 2. Preparat 3. Spatula 4. The 5 different types of metals (Aluminum, Copper, Zinc, Magnesium, and Iron) 5. Hydrochloric Acid 6. Balloon(s) 7. Scale 8. Graduated cylinder 9. Stopwatch

Method
 * 1) Gather all the equipment that is needed for this experiment
 * 2) Take the spatula to take a small amount of aluminum
 * 3) Place the aluminum in the preparat
 * 4) Use the scale to measure the amount of aluminum, make sure that the aluminum measures to 0.5 grams
 * 5) Next, pour a small amount of hydrochloric acid into a graduated cylinder to measure the amount
 * 6) Make sure that the amount of acid measures to 10 ml
 * 7) Pour the acid into a test tube
 * 8) Prepare the stopwatch
 * 9) Carefully add the aluminum into the test tube containing acid
 * 10) Carefully place the balloon on top of the mouth of the test tube
 * 11) Repeat this whole process with the other 4 metals


 * __Conclusion__**

Aim: The aim of this experiment is to find out which of the following metals are the most reactive ones ; Iron, aluminum, copper, magnesium and zinc. We will find this out by making them react by putting the powder of each metal in hydrochloric acid, and by observing the amount of gas the reaction creates.

1. I thought that in the experiment that I did with my partner was very successful. The type of metal that reacted the most with hydrochloric acid was the Iron (Fe). The second type of metal that was reactive was the Zinc, after covering the mouth of the test tube with the balloon, the metal started to release some gas, causing the balloon to expand. The third type of metal that was reactive was the Magnesium, this was because the magnesium was really reactive at first, and it started to fill the test tube, which then made it overflow. I noticed that the aluminum was the least reactive metal in this experiment.

Hypothesis: If we put five metals in hydrochloric acid, then Iron will be the most reactive followed by Zinc, Copper, Aluminum and Magnesium, because Iron has 2 rows of open valence electrons and can gain a lot of electrons, which will make it reactive.

2. This was also what we had predicted for our hypothesis, we said that the Iron powder will be the most reactive because Iron has 2 rows of valance electrons and can gain a lot of electrons, which will make it reactive.


 * __Evaluation:__**

Our data is quite reliable, but however the lab has some weak points that make the lab and the data un reliable. One of the weak points is that we didn’t repeat the experiment so we don’t know if the same reaction happens the next time. There were also some points that were not valid in the method that made the experiment unclear. However generally the method was valid. Weakness in the method || How to improve it || There is a time rag between putting the metal in and putting a balloon on the top of the test tube, and the gas escapes before the balloon is put on. || Use a plastic bag to cover the test tube because it will be easier and faster to put it on to collect the gas. || The time the metal was put into the acid was different, so it was hard to compare the reactivity with the size of the balloon. || Put the metals in the acid at the same time. || Some things that made a fair test is that a new funnel was used every time. If the same funnel was used, the metal powders would stick on the inside of the funnel and will mix with other metal particles, which will not make this a fair test. One more thing that made this a fair test is that the test tubes were washed before the test, which will make the test tubes in the same condition. This lab relates to the area of interaction of Environments. This is because we need to know about reactivity when throwing things away, because the metals in the battery may react with some thing, and will cause a serious environmental problem. Some places we can use this lab is when we are cleaning our lab room. When throwing acids, we must be aware if it reacts with some thing, so that it wont react with something and create a poisonous gas. We can also use this when building a factory. If we want to make a factory that creates acid, we don’t want to make it with iron, because it will easily react with the acid and will break down, but if we know the results of this lab, we can be able to make the building with Aluminum, which was not really reacting with the acid.
 * __Real life Applications:__**

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