Answer;
-Elements, that are metallic (metals)
Experiment;
Metallic minerals contain metal in raw form.Metallic minerals occur in rare, naturally formed concentrations known as mineral deposits.These minerals contain metallic bonds.
Metallic bonding result from atomic nuclei and inner filed electron shells in a sea of electrons made up of unbound valence electrons or not equally shared
Metallic bonding yield minerals that are soft, ductile / malleable, highly conductive due to easily mobile electrons - metals, also non-directional bonding produces high crystal symmetry
Answer:
The correct option is c. c. heat is released in the process.
Explanation:
Thermodynamics is the study of the behavior of heat energy and the ways in which energy is transformed into heat. The second law of thermodynamics indicates that from one form of energy to another (mechanical energy to chemical heat and vice versa) there is loss of energy in the form of heat. This form of energy, known as heat, is degraded energy, which is simply disorganized movement of molecules. The second law of thermodynamics implies that there is always a tendency towards greater disorder or entropy. To counteract entropy, that is to create order, energy must be used. This can be observed in a natural ecosystem: the energy emitted by the sun is captured by plants and converted into energy stored by photosynthetic processes.
Photosynthesis is the process in which the energy of light is converted into chemical energy in the form of sugars. The energy accumulated by plants during photosynthesis is called primary productivity. The solar energy that reaches the surface of an ecosystem is only used approximately 1%, because the losses are considerable until reaching primary production. In effect, approximately 45% of the available light is absorbable by photosynthetic organelles; a part of the potential radiation is reflected; another part is transmitted by the vegetal organs, that is to say, that passes through them, and the absorbed energy is transformed into heat.
Many cases seem to occur without an apparent cause, while some may occur due to a genetic ( inherited ) defect, environmental exposure during pregnancy, or a combination or both factors. Syndactyly may also occur as a part of an underlying genetic syndrome and can be found in over 300 different genetic syndromes
