What are the basic particles of ice crystals?
Which of the following solid is isotropic?
In which of the following solids, ions of opposite charges are held together by strong electrostatic forces of attraction?
Ionic solids or compounds are formed by the transfer of electrons from one atom to another atom. Hence there is always the formation of anion and cation due to opposite charges electrostatic force of attraction formed between them which holds them together.
Why some of the physical properties of solids show different values when measured along different directions in the same crystals?
Which of the following crystalline solids have highest melting point?
Diamond has a very high melting point (almost 4000°C). Very strong carbon-carbon covalent bonds have to be broken throughout the structure before melting occurs. Diamond is very hard.
Which of the following properties is generally exhibited by amorphous solids?
Why ancient glass becomes milky?
Amorphous solids become crystalline on ageing e.g. ancient glass appears milky due to crystallization.
Which of the following is NOT a molecular solid?
Diamond, graphite, and buckey balls are not organic compounds, for they are not compounds. A diamond is not considered as a molecule because each carbon atom is covalently bonded with four other carbon atoms. This is what makes diamond a network solid.
Amorphous solids are also known as
Hydrogen bonding occurs in which type of crystalline solids?
Molecular solids consist of atoms or molecules held to each other by dipole–dipole interactions, London dispersion forces, or hydrogen bonds, or any combination of these.
Which of the following is an amorphous solid?
Which of the following solids are also called as super cooled liquids?
Glass is sometimes called a supercooled liquid because it does not form a crystalline structure, but instead forms an amorphous solid that allows molecules in the material to continue to move. However, Scientific American indicates thatamorphous solids are neither supercooled liquids nor solids.
Potassium chloride is:
Which type of solids are held by weak dispersion forces?
Non polar Molecular Solids:
Zinc sulphide is crystalline solid:
Zinc sulfide (or zinc sulphide) is an inorganic compound with the chemical formula of ZnS. This is the main form of zinc found in nature, where it mainly occurs as the mineral sphalerite.
Which state of matter is incompressible?
Magnitude of the repulsion rises very rapidly as the distance separating the molecules decreases. This is the reason that liquids and solids are hard to compress.
Why do metallic solids conducts electricity?
In a metal, the valence electrons are loosely held. They leave their “own” metal atoms, forming a "sea" of electrons surrounding the metal cations in the solid. Thus, metals are good conductors of electricity.
Dry ice is an example of:
Dry ice is solid carbon dioxide which is generally used in packing frozen items is an example of molecular solid.
What are the basic constituent particles forming diamond crystals?
In diamond carbon atoms are joined together by strong covalent bonds tetrahedrally.
A friend in your chemistry class is struggling to understand why crystalline solids are grouped into four main types: network, molecular, ionic, and metallic. Which explanation below will BEST help him begin to understand why chemists might have these groups?
Chemists have learned over time that even within a group of solids that share a similar structure (i.e., lattice), other differences affect the way the solid behaves. The bonds and molecular composition of a solid influence its conductivity, malleability, solubility, density and other factors.
Which of the following is a non-conductor in solid state but good conductor in molten state?
Which of the following properties is NOT exhibited by metallic solids?
Among the following solids, which one shows the strongest bonding?
Ionic bond is much stronger than covalent bond because it involves complete transfer of electrons because of which there is formation of cation and anion and there exist huge electrostatic forces of attraction. They also have high melting and boiling point which proves that the ionic bond is very strong.
Why ice is a crystalline compound?
Crystalline compounds are those which particles/molecules are arranged in proper order as in ice particles/water molecules are arranged in cage like ordered manner so this ordered structure is called as crystalline compound.
Which of the following is a covalent crystal?