An element or compound’s reactivity is its ability or capacity to react, or bond, with another substance. As you continue through this course, you will observe and compare this particular chemical property in a variety of scenarios.
A few metal elements in high temperatures may enter an excited state and they’re seen by emitting a light of color. Comparing the substance flame with the flames of the reference table will help identify the element of the unknown metal. First we placed each of the liquefied metals in flames and observing their color changes by collecting data. Lastly, observing the color of the liquefied metal, placing it in the flame with a wire loop could emit a color change and this concludes the experiment. The unknown metal was exactly the metal ion that was hypothesized. The unknown metal
The periodic table was a display of all known elements ordered in increasing atomic number. The modern periodic table has groups, a column of elements, and periods, a row of elements. Elements within the same group have similar chemical properties because they all possess the same amount of electrons in the highest occupied energy level, also known as valence electrons. Due to the fact that chemical properties are determined by electron configuration, elements in the same group will react similarly. This was because elements in the same group want to lose or gain the same amount of electrons, in order for them to become stable ions. For metals, the elements lose electrons in order to become stable ions and nonmetals gain electrons to become stable ions. All the elements in a group will
Lithium has the lowest energy of wavelength emitted. Sodium has a higher energy of wavelength emitted, and lithium has the highest. As one moves down the alkali metal family, the energy emitted increases because more shells are being added
An elements¡¦ reaction to certain substances may be predicted by its placement on the Periodic Table of Elements. Across a period, an element on the left will react with more vigor than one on the right, of the same period. Vertically, as elements are sectioned into groups, the reaction of each element increases
Gallium, to most, is considered to be a very interesting metal. It has an incredibly low melting point, lower than the average temperature of the human body, which means it can melt in one’s hands. However, its boiling point is at a much higher temperature, much higher than one might expect. These properties, coupled with the fact that one can touch gallium without any side effects, make gallium an intriguing element, to say the least. On the periodic table, gallium’s symbol is Ga and its atomic number is 31. Gallium is not found naturally, but it is very easy to obtain. Gallium is an incredibly interesting element, and its history and properties make it so special and interesting.
Every element is valuable and unique due to the endless arrangements of sub-atomic particles, which fascinates me. This allows for a diversity of elemental properties, sparking innovation for chemists to develop new products from different tasting chocolates to materials used for rockets- shaping society and the environment of the modern world. The sheer range of applications where chemistry is involved inspires me to contribute, while learning, unlocking why everything behaves the way it does.
With Bromine being element number 35 on the periodic table, it is also very reactive as it is part of group 17, the Halogens. The Halogens are the most reactive group in the periodic table. Bromine’s atomic mass is 79.904. Bromine also has 2 stable isotopes. Its mass numbers are 79 and 81. Chlorine,
The students created a macroscopic, three-dimensional (3D) model of several properties of the periodic table. They explained in their own words the following terms: atomic radii, ionic radii, first ionization energy, and electronegativity. Lastly, they identified, described, and explained the patterns observed in the 3D periodic tables for the following element properties: atomic radii, ionic radii, first ionization energy, and electronegativity.
For the lesson observed the objectives was to explain the trends of the periodic table based on the elements’ valence electrons and atomic numbers. Additionally, students were responsible for applying their previous knowledge in calculating subatomic particles to review the Bohr Models and discus the relationship among families in the periodic table. Students will use the information from today’s lesson to make future judgments on reactivity and bonding created during chemical reactions in the next unit. Lastly, students were to connect the information on elemental properties to previous experiences with their health, commercial products, and everyday life.
Frank (Francium)- Alkali Metal. Francium is a highly radioactive metal, therefore highly toxic. It only has a life of 22 minutes. We chose this element for Frank because he is the main strong guy, or superhero, but he is also very impulsive.
There are significant differences in chemical and physical properties between beryllium and magnesium and the group members from calcium onwards, which traditionally led to "alkaline earth metal" only applying to the latter group. This classification is mostly not in in English-language sources, but is still used in other countries such as Japan. As a result, comparisons with strontium and barium are more germane to calcium chemistry than comparisons with magnesium. Calcium metal burns hot if ignited, and it reacts violently with water to form the strongly-alkaline calcium hydroxide that can cause chemical
In this experiment, a scientist will test which of three metals copper, steel, or brass produces the most thermal energy. The independent variables are the three metals used and the time amount of time the metals spent in water. The dependent variable is the thermal energy conducted. The control for this experiment would be a nonconductive material and the constant materials are the pot, stove and Styrofoam cups used. The data will all be calculated in degrees Fahrenheit.
PURPOSE: Ranking the metals copper, magnesium, iron, zinc and hydrogen in terms of their reactivity.