Answer: True,a mineral is a naturally occurring solid with a regular, repeating structure.
Explanation:
Minerals are natural occurring inorganic solid substance with fixed chemical composition. These solids are formed by repeating unit of their single crystal structure that is atom present in the minerals are arranged or placed in systematic pattern or fashion. For example : Halite is a mineral composed of chlorine and sodium atoms arranged in a cubic pattern.
So, the given statement is true.
The yellow element that stinks when burned is sulfur.
Sulfur is a chemical element with the symbol S and atomic number 16. It is a non-metal that is a member of the chalcogen group in the periodic table. Sulfur is a yellow solid at room temperature. It is insoluble in water but soluble in carbon disulfide. When sulfur is burned, it produces a foul-smelling gas called sulfur dioxide.
Sulfur dioxide is a colorless gas with a pungent, irritating odor. It is a major air pollutant and can cause respiratory problems. Sulfur is used in a variety of applications, including the production of sulfuric acid, gunpowder, and rubber. It is also used in the vulcanization of rubber. Sulfur dioxide is a highly reactive gas. Sulfur dioxide has a low boiling point. Sulfur dioxide is heavier than air.
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When a gas condenses to liquid the process is exothermic with the release energy and the enthalpy change is negative. As liquid has more ordered structure than gas, the entropy, which is the measure of disorder decreases or ∆ S has a negative value.
Free energy is given by the Gibb's free energy equation,
∆G = ∆H –T∆S
For a process to be spontaneous ∆ G must be negative.
∆H is negative and ∆S is negative, so the magnitude of |T∆S| should be less than the magnitude of |∆H| in that way ∆G is always negative.
|T∆S| should be less than the magnitude of |∆H|, so to favor that T should be low. The process is spontaneous at a lower temperature than at a higher temperature.
the neutron and the electron cloud
O the neutron and the proton cloud
O the nucleus and the electron cloud
Answer:
the nucleus and electron cloud is the correct option
840 candies: answer
Explanation:
(2) alpha particle, gamma ray, beta particle
(3) gamma ray, alpha particle, beta particle
(4) gamma ray, beta particle, alpha particle
Answer: The order of penetrating power from greatest to least is gamma ray, beta particle, alpha particle.
Explanation:
Penetration power is defined as the movement of particles or the ray through an object. It is directly proportional to the energy of the particle.
So, more is the energy of a particle, more will be its penetrating power.
We know that:
Gamma rays have the highest energy, followed by beta particle and then by alpha particle.
Thus, the ascending order of the penetration power of alpha rays, beta rays, and gamma rays will be:
Alpha rays < Beta rays < Gamma rays
Hence, the order of penetrating power from greatest to least is gamma ray, beta particle, alpha particle.