EVERYDAY SCIENCE

SCIENCE

CHEMISTRY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Describe the particle arrangement in solids.
A
Particles spread out and do not have a fixed shape nor volume.
B
Packed closely together, though are able to move around, do not have a fixed structural shape.
C
Packed closely together, not free to move about, only vibrate, and hold a rigid structural shape.
D
Hold a fixed structural shape, but do not have a fixed volume.
Explanation: 

Detailed explanation-1: -In a solid, these particles are packed closely together and are not free to move about within the substance. Molecular motion for the particles in a solid is confined to very small vibrations of the atoms around their fixed positions; therefore, solids have a fixed shape that is difficult to change.

Detailed explanation-2: -In a solid, the particles pack together as tightly as possible in a neat and ordered arrangement. The particles are held together too strongly to allow movement from place to place but the particles do vibrate about their position in the structure.

Detailed explanation-3: -A solid has a definite shape and a definite volume. The particles that make up a solid are packed very closely together. Each particle is tightly fixed in one position and can only vibrate in place.

Detailed explanation-4: -Gas. The atoms and molecules in gases are much more spread out than in solids or liquids. They vibrate and move freely at high speeds.

Detailed explanation-5: -Particles in solids are packed very closely because there is a very strong forces of attraction between the particles and intermolecular space is almost negligible. Wheras in liquids and gases the forces of attraction are not strong and intermolecular spaces are high. Q.

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