Answer:
The answer to your question is: Includes sulfur and gain two electrons
Explanation:
Includes Chlorine This option is wrong, Chlorine belongs to group VII.
Includes Sulfur This option is true, Group VI includes Oxygen, Sulfur, Selenium, Tellurium.
Gain 2 electrons. This option is true, Elements in group VI have six valence electrons so they gain to electrons to become estable.
Tend to form +2 ions This option is wrong, this elements form -2 ions
Have 5 valence electrons This option is wrong, this elements have 6 valence electrons.
Chemical reactions can be classified based on patterns such as reversibility or irreversibility, changes in chemical structure, and changes in chemical energy. These changes can refer to the reaction direction, molecular rearrangements, and energy transformations.
The criteria for classifying chemical reactions are notable patterns of behavior and include factors such as reversibility or irreversibility, changes in chemical structure, and changes in chemical energy. For instance, reversibility or irreversibility refers to the direction in which the reaction takes place. A reaction may synthesize into a product and then decompose back into the reactants, an instance of reversible reaction.
Changes in chemical structure involve a transformation in the arrangements of atoms in the reactants and the products. For instance, in a chemical reaction involving the transfer of hydrogen ions between reactants, the structure of the molecules changes.
Changes in chemical energy denote transformations involving energy, either by absorption or release, accompanying the reaction process. This is a characteristic feature of exergonic and endergonic reactions. For instance, in an exergonic reaction, energy is released due to the reaction.
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b. polyatomic ion
c. multivalent ion
d. electron ion
Answer:
The correct answer is option b, that is, polyatomic ion.
Explanation:
A molecular ion also called polyatomic ion refers to a charged chemical species comprising two or more atoms bonded covalently with each other. The polyatomic ions comprise two or more non-metallic atoms. An example of a polyatomic ion is an ion of nitrate that comprises one atom of nitrogen and three atoms of oxygen. As the atoms in a polyatomic ion are bonded covalently, they are considered to possess a single charged unit.
B) This is a physical adaptation that helps a doe recognize her fawn.
C) The pattern of the speckled coat is used as a form of warning coloration.
D) The speckled coat blends with the light that filters through the forest leaves.
Answer:
The answer is D
Explanation:
Answser: as the ball is ascending, its kinetic energy decreases and the gravitational potential energy decreases. When the ball is at the maximum altitude, the gravitational potential energy is maximum and the kinetic energy is minimum. As the ball is descending, it loses gravitational potential energy and gains kinetic energy. The total mechanical energy is conserved.
Explanation:
Remember, gravitational potential energy is due do the position (altitude) and the kinetic energy is due to motion (speed).
Mathematically they are:
Gravitational potential energy = mass × gravitaional acceleration × altitude
Kinetic energy = mass × speed² / 2.
Total mechanical energy = gravitational potential energy + kinetic energy.
The ball starts with a very low gravitational potential energy (low altitude) and high kinetic energy (high speed), as the travels upward and far away from the hitter, the kinetic energy is transferred to gravitational potential energy, so the ball gains altitude and loses speed.
When the ball reaches the maximum altitude, it has lost all the vertical speed, and the kinetic energy is at a minimum level, while its gravitational potential energy is at the maximum.
From that point, the ball starts to descend, losing grativational potential energy and gaining kinetic energy. At the moment that the ball reaches the ground it will be again at the minimum grativational potential energy and maximum kinetic energy.