For example, graphite has a relatively high electrical conductivity within the carbon planes, and diamond has the highest thermal conductivity of any known substance. Classify Ge, RbI, C6(CH3)6, and Zn as ionic, molecular, covalent, or metallic solids and arrange them in order of increasing melting points.

There are four types of crystals: (1) ionic , (2)metallic , (3) covalent network, and (4) molecular .

Such solids are very hard and brittle. They have extremely high melting points and may even decompose before melting. They are insulators and do not conduct electricity.

The sheets of graphite are held together by only weak London forces! Metallic solids—Made up of metal atoms that are held together by metallic bonds. Characterized by high melting points, can range from soft and malleable to very hard, and are good conductors of electricity.

Ionic solids are made up of a lattice composed of oppositely charged ions. One of the most common ionic solids is sodium chloride….Ionic solids

• High melting points and boiling points due to strong ionic bonds.
• They are brittle – will shatter with a hammer.
• Usually soluble in water.

1 Answer

• A solid has a definite shape and volume.
• Solids in general have higher density.
• In solids, intermolecular forces are strong.
• Diffusion of a solid into another solid is extremely slow.
• Solids have high melting points. Related topic.

Write any five characteristics of solid, liquid, and gases.

• solid have a fixed shape and a fixed volume.
• solid cannot be compressed.
• solids have high density.
• force of attraction between the particles is very strong.
• The space between the particles of solids is negligible.

Solid are characterized by structural rigidity and resistance to changes of shape or volume. Unlike a liquid, a solid object does not flow to take on the shape of its container, nor does expands to fill the entire volume available to it like a gas .

A solid’s particles are packed closely together. The forces between the particles are strong enough that the particles cannot move freely; they can only vibrate. As a result, a solid has a stable, definite shape and a definite volume. Solids can only change shape under force, as when broken or cut.

Water can occur in three states: solid (ice), liquid, or gas (vapor).

Rain water

The majority of the cloud is just plain air in which the invisible water vapor is mixed with and the very tiny water drops and ice particles are suspended in. A cloud is a mixture of gas, liquid and solids.

Clouds are made of millions of these tiny liquid water droplets. The droplets scatter the colors of the sunlight equally, which makes clouds appear white. Even though they can look like cushy puffballs, a cloud can’t support your weight or hold anything up but itself. Water vapor does not condense spontaneously.

Clouds are made of water vapor and feel like mist. Most of the time, you don’t touch the clouds. They move in with the weather, and pour down from the mountains around you.

Cloud cover is an abiotic Factor, because the presence of clouds blocks out light, and thus has an affect on plants and the rate of photosynthesis they perform, for example. Therefore, cloud Cover is an abiotic Factor due to its intricate role in the lives of living organisms on or around the surface.

Like water, oxygen (O2) is another important abiotic factor for many living organisms.

Mold is the fungi which is biotic. The abiotic is something which is non living but influence the living system. The mold is filamentous hyphae like fungi which is biotic in nature because it influences the living system to great extent.

Dead organisms are not abiotic.