ipl-logo

Periodic Table Lab

1360 Words6 Pages

Determination of the Periodic Properties of the Elements

Introduction :
Periodic Table shows the properties of elements are periodic functions of their atomic numbers. The periodic table contains alkali metals, alkaline earth metals, transition metal, basic metal, semimetal, non-metal, halogen, noble gases, lanthanides and actinides. The periodic table is important because it is organized to provide a lot of information about elements and how they relate to each other in one easy-to-use reference. It appears in nearly every science lecture room and labs because it is important for science subjects. The periodic table serves a useful purpose. The horizontal rows on the periodic table are the periods. The vertical columns on the periodic table …show more content…

To prepare an activity series of the metals based on the observations from the above reactions.

Apparatus :

Spatula, Test tube, 150ml beaker

Materials :

Magnesium ribbon, phenolphthalein indicator, 6M HCl, Gra

Procedure :

The Group 2A Elements : Alkaline Earth Metals-Magnesium and Calcium
1.
A piece of magnesium ribbon was acquired. A test tube is filled up with 5ml of water. A few drops of phenolphthalein indicator is added into the test tube that was filled with 5ml of water. The magnesium ribbon was placed into the test tube. The observations were recorded.

2.

The experiment was repeated with small particles of calcium with water.(It is required to break calcium into smaller pieces.) The observations were recorded.

Mg(s) + 2H2O(aq) → Mg(OH)2(aq) + H2(aq)

Ca(s) + 2H2O(aq) → Ca(OH)2(aq) + H2(aq)

3.

Two test tubes were filled with 3ml of 6M HCl respectively. A piece of magnesium ribbon is dropped into one test tube and small pieces of calcium is dropped in the other test tube. The mouth of the test tubes is covered by the thumb once both the magnesium ribbon and small pieces of calcium is dropped into the test …show more content…

Zinc Effervescence Zn+2H^+→ Zn^(2+)+ H_2

Discussion :

Group 2A Elements

Part 1 . Reactions with water

Based on the observation, both magnesium and calcium that were placed in the water turns the solution into pink. The water turns pink because of the presence of the phenolphthalein indicator. Phenolphthalein turns pink in alkaline solution and is colourless in acidic solution. Due to the hydroxide ions, both solutions turn pink and become effervescing with hydrogen gas. Below are the equations of the reactions :

Mg(s) + 2H2O(aq) → Mg(OH)2(aq) + H2(aq)

Ca(s) + 2H2O(aq) → Ca(OH)2(aq) + H2(aq)

Calcium is more reactive than Magnesium. Therefore, Ca(OH)2 changes to pink faster than Mg(OH)2 because Calcium is located below Magnesium in the periodic table. Calcium donates electrons faster than Magnesium.

Part 2 . Reactions with HCl

Both magnesium and calcium were repeated placing in 3 ml of 6M HCl. Both solution released colourless gas bubble after placing the metals in the test tubes. Both solutions were tested with burning wooden splinter placing near to the mouth of the test tubes, both of the test tubes produced a ‘pop’ sound. Below are the equations of the reactions

Show More
Related
1367 Words | 6 Pages

Chemical compounds that are available to determine are CaCO3, CaCl2, Ca(NO3)2, mgCl2, MgSO4, KCl, HCl, HC2H3O2, KNO3, K2SO4, NaC2H3O2, Na2CO3, NaCl, Na2SO4, HNO3, H2SO4, HNO3, H2SO4, NH4Cl, (NH4)2SO4, K2CO3, 0.1 M AgNO3, 0.2 M BaCl, Mg(s), NaOH, and KOH. To start this experiment, start with the flame test by gathering a Bunsen burner and a Nichrome wire. Connect the Bunsen burner with a rubber tube to a laboratory gas. To prepare solutions for the flame test, weigh out 0.205 gram of Unknown Compound using an analytical balance and mixed it into a 140 mL beaker filled with 20 mL ionized water. Ensure that solid is completely dissolved using a stirring rod.

Read More
1316 Words | 6 Pages

If any chemical is added or brought near another chemical, then a reaction will occur and physical and chemical changes will be seen. Procedure Procedure and Materials taken from Nelson Science Perspectives 10 pages 244 to 247 Material changes include: Glowing splint used in placed of limewater in Station 2 Magnesium

Read More
775 Words | 4 Pages

In the first part of the experiment, Part A, the standard solutions were prepared. As a whole, the experiment was conducted by four people, however, for Part A, the group was split in two to prepare the two different solutions. Calibrations curves were created for the standard solutions of both Red 40 and Blue 1. Each solution was treated with a serial 2-fold dilution to gain different concentrations of each solution.

Read More
252 Words | 2 Pages

In cycle one, the double displacement reaction, Cu(s) + 4HNO3(aq) → Cu(NO3)2(aq) + 2NO2(g) + 2H2O(l) occurred, the result of the reaction was that the reaction mixture began to bubble with the copper filling dissolving and a vapor like substance leaving the reaction. Furthermore, when water was added, the color change, from brown to a blue color pigment. Then in Cycle two, another double displacement reaction occurred, Cu(NO3)2(aq) + 2NaOH(aq) → Cu(OH)2(s) + 2NaNO3(aq), which resulted in the reaction becoming cloudy and a darker shade of blue. Following cycle two, a decomposition reaction occurred as the result of heat being administered to the mixture, thus the following reaction occurred in cycle three, Cu(OH)2(s) → CuO(s) + H2O(l). As a

Read More
1545 Words | 7 Pages

Next, the test tubes were carefully cleaned with soap and water. Then five millilitres of sample “A” was placed in the test tube labeled “A”. This was then repeated with the next three samples. Then a few drops of each sample were placed on glucose/ketone paper. Each piece of glucose/ketone paper (with the sample on top) was compared to the label on the glucose paper bottle.

Read More
1204 Words | 5 Pages

After the reaction it was white and brittle, like a burnt piece of paper. It no longer displayed its original qualities. Since the magnesium reacted with oxygen to form MgO, the mass of MgO should be greater than that of the magnesium. Did this occur? If not, why?

Read More
1017 Words | 5 Pages

This is because when the magnesium salt is heated, its electrons become excited, and jump to a higher energy level. They then fall back to their ground state, emitting energy in the form of ultraviolet radiation, which is not a part of the visible spectrum, and thus cannot be seen by the human eye. Therefore. a perceived color change of the flame is not expected. In actuality, when magnesium salt is put into the flame, it becomes a brilliant white color.

Read More
503 Words | 3 Pages

Copper, magnesium, iron, and zinc were all tested in the same five solution compounds; which included hydrochloric acid, sulfate, magnesium chloride, iron chloride, and zinc chloride. Observations of chemical changes within the reaction were recorded to describe the results of the reaction and each metal's reactivity. An example of a single replacement reaction is the Statue of Liberty, which has copper on the outside and iron as an inner support. As time went by, the copper started to react with air and form a verdigris coat, or a bright bluish-green patina. Meanwhile, a single replacement reaction between iron and verdigris takes place so that Verdigris on the outside is replaced back to copper but the iron support is oxidized and rusted.

Read More
471 Words | 2 Pages

Throughout the experiment, copper was altered a total of 5 times, but after the final chemical reaction, solid, elemental copper returned. Each time the solution changed color, a precipitate formed, or when gas appeared, indicated that a chemical reaction was occurring. For the first reaction, copper was added to nitric acid, forming the aqueous copper (II) nitrate (where the copper went), along with liquid water, and

Read More
729 Words | 3 Pages

The objectives of this experiment were to use knowledge of chemical formulas and chemical nomenclature to experimentally determine the empirical formula of copper chloride. Common laboratory techniques were used to conduct a reaction between copper chloride and solid aluminum in order to get rid of the water of hydration. The amount of water of hydration in the sample of copper chloride hydrate was calculated by measuring the mass before and after heating the sample. Afterwards, an oxidation-reduction reaction was conducted, resulting in elemental copper.

Read More
1244 Words | 5 Pages

ST Report In the experiment, the problem was the contaminants that were affecting the quality of the water samples. To fix this issue, three scientists had to determine the contaminants that were present in the samples. One sample was from the school sink and the second sample was from an unknown source. The scientists conducted many tests to figure out what pollutants were present in the water.

Read More
800 Words | 4 Pages

+ H2O (g) Reaction 4: when a sulphuric acid is added to the solution that contains copper (II) oxide, a double displacement reaction will occur. the copper (II) oxide will react with the sulphuric acid producing copper (II) sulfate and water. The copper and hydrogen gas replace each other. Balanced Chemical Equation: CuO (s) + H2SO4 (aq) —> CuSO4 (aq) + H2O (l) Reaction 5: when zinc is added to the copper (II) sulfate solution, a single displacement reaction will occur.

Read More
1161 Words | 5 Pages

To improve this experiment, there could be better Bunsen burners: for some students, the fire was not strong enough so the magnesium strip did not glow and react. Also, there could be description or a standard time of how much oxygen should react with magnesium so that the exact mass of magnesium oxide could be

Read More
406 Words | 2 Pages

Lucas 1 Jennifer Lucas Professor Mealey CHEM 1305-008 07 August 2017 Sodium (Na) Sodium has an atomic number of 11 and an atomic mass of about 23. It has a symbol on the periodic table of Na. It is a silvery-white metal found under the alkaline metals. Sodium is the “sixth most common element on earth and makes up about 2.6% of earth’s crust,” (RSC 1).

Read More
1346 Words | 6 Pages

This experiment has to be carried out carefully

Read More

More about Periodic Table Lab

Related Topics

Open Document