Answer:
A
Explanation:
A chemical change is when a new substance is created, which often has its own chemical properties, so A is the correct answer.
In Thomson's experiment, he showed that an electrical current can be made to flow from a positive site to a negative site.
Ar(g) deviates more from ideal behavior at extremely high pressures than Ne(g) does because A. The particle volume of Ar is greater than that of Ne.
When considering the ideal behavior of a gas, we make 2 assumptions:
- The volume of the gas is negligible in comparison to the container.
- The attraction forces between the particles are negligible.
Ar(g) deviates more from ideal behavior at extremely high pressures than Ne(g) does. Which of the following is one reason for this difference?
- A. The particle volume of Ar is greater than that of Ne. YES. Since Ar particles are bigger than Ne ones, their volume is harder to neglect.
- B. Ar atoms have more valence electrons than Ne atoms have, so Ar atoms have greater interparticle forces. NO. They have the same number of valence electrons (8).
- C. The intermolecular forces between Ne atoms are greater than those between Ar atoms. NO. The intermolecular forces between Ne atoms are lower than those between Ar atoms.
- D. Ar atoms are more attracted to the walls of the container than Ne atoms are. NO. There are no appreciable differences between the attractions to the walls.
Ar(g) deviates more from ideal behavior at extremely high pressures than Ne(g) does because A. The particle volume of Ar is greater than that of Ne.
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Answer:
Ways to prevent beach erosion : Groyne, Offshore breakwater structure, Artificial headland. Disadvantages of each have been given below
Explanation:
Beach Erosion is of sand around coasts, it displaced to some other places.It can lead to flooding, building loss.
Ways to prevent beach erosion are :
1. Groyne : A coastal structure - of wood, rock, bamboo - constructed perpendicular to the coastline from the shore into the, sea to trap longshore sediment transport or control longshore currents.
- Disadvantages : Erosion downdrift risk, more structure & more maintenance needed, Local scours at structures' toes
2. An offshore breakwater structure : is built in the near shore zone, parallel to the shore and serves as a wave absorber. It helps reducing wave energy by serving as a wave absorber.
- Disadvantages : Large, difficult to build & design structures, vulnerable to strong wave action
3. Aritificial Headland : It is a structure constructed to promote natural beaches, as it plays role of a artificial headland. It is relatively easy to construct and little maintenance is required
- Disadvantages : Relatively large structure, Poor stability against large waves