Reactivity of nickel

Abstract

A series of experiments which lead to observations about the reactivity of nickel. [Debut]

Estimation of the Curie Temperature of Nickel Using a Simple Thermodynamic Analysis

“…Furthermore, the final temperature of the beaker, water, and nickel object are also the same. Substituting eqs 2, 4, and 5 into eq 1 and solving for ΔT (recall this is the change in temperature of the coin) yields (6) Finally, substitution of eq 6 into eq 3 and solving for T C gives (7) Equation 7 allows for the Curie temperature of nickel to be estimated using experimentally measured values and tabulated constants.…”

“…The Curie point of a ferromagnetic material is the temperature above which the ferromagnet becomes paramagnetic. − This transition occurs when thermal energy disrupts the alignment of magnetic dipoles in microscopic regions known as domains within the ferromagnetic material . Ferromagnetic and paramagnetic behavior is only observed in substances that have unpaired electrons .…”

“…The basic procedure of this experiment is similar to simple demonstrations of the Curie temperature in metallic nickel reported previously. ,, That is, an object made of nickel metal is attached to a magnet or magnetized object, held above a glass beaker filled with water, and heated with a flame. When the nickel is heated to its Curie temperature, it loses its ferromagnetism and falls into the water.…”

“…As such, the Curie point phenomenon can provide a platform for discussion of the electronic configuration of the elements. Educators have exploited observations of the Curie temperature of nickel for use in a variety of experiments and demonstrations. − The simplest of these ,, involves attaching a magnet to a coin made of nickel metal, holding the coin over a beaker containing water, and then heating the coin in a flame. When the coin reaches the Curie temperature of nickel (627 K), it undergoes the ferromagnetic to paramagnetic transition.…”

Simple Synthesis and Characterization of Several Nickel Catalytic Precursors

“…Repeated or prolonged inhalation may cause asthma. These substances have been investigated for their possible carcinogenic effect on humans (8,9). Aluminum nitrate and γ-Al 2 O 3 can irritate the eyes and the skin slightly.…”