ideal gas?
A. The particles are constantly moving in circular
paths.
B. The particles collide, decreasing the total energy
of the system.
C. The particles have attractive forces between them
D. The particles are considered to have negligible
volume.
Answer:
D. The particles are considered to have negligible volume.
Explanation:
According to the Kinetic Molecular Theory for ideal gases
- Gases are composed of larges molecules which are in constant random motion in a straight line
- The volume of the gas particles is negligible compared to the total volume in which the gas is contained.
- The attractive and repulsive forces between gas molecules is insignificant ie There are no interactive forces.
- The collisions of the particles are perfectly elastic and energy is being transferred between the particles but the total energy remaining constant
Nonmetals, such as those in groups 14 and 17, generally gain electrons becoming more stable anions. Metals, like those in group 1, typically lose electrons and form stable cations. An example is in ionic compounds where metal atoms like sodium lose electrons and nonmetal atoms like chlorine gain electrons.
In the context of elements and their atoms, nonmetals, which include elements from group 14 and group 17, tend to gain electrons. This gain in electrons forms negative ions, or anions, which fills their outermost electron shell, making them energetically more stable.
On the other hand, metals like those from group 1, tend to lose electrons. This event makes them energetically more stable by forming positive ions, or cations, and allowing them to achieve an electron configuration similar to noble gases.
For instance, to fill their outermost shells, elements donate or accept electrons. In ionic compound formation, metals like sodium (Na) lose electrons while nonmetals like chlorine (Cl) gain these electrons, achieving a stable configuration.
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Answer: Option (d) is the correct answer.
Explanation:
A test or experiment in which only one variable is changed at a time in order to verify the result is known as a controlled experiment.
That is only independent variable need to be adjusted with respect to the dependent variable.
Thus, we can conclude that the action to test a piece of treated iron and a piece of untreated iron under the same conditions would be most important to perform in a controlled experiment in the given situation.
A. Some ice cubes are floating in the tea
B. The sugar crystals are no longer visible in the tea
C. The mixture looks the same throughout
D. Some water droplets form on the outside of the glass
The subject is science
Answer:
The correct option is;
A. Some ice cubes are floating in the tea
Explanation:
A heterogenous mixture is one that is made up of more than one clearly identifiable phase of matter (such as solid and liquid, liquid and gas, gas and solid, or solid, liquid and gas combined) and therefore having non-uniform composition, which varies from one section to another within the mixture.
Ice cubes which are solids being observable on the surface of the mixture provides clue that the student has made an heterogenous mixture.