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Solid materials that can conduct electricity well usually have bonds....

• metal

• ionic

• covalent

• hydrogen

Which statement is true about amorphous solids?

• Amorphous solids have a regular structure.

• Amorphous solids do not have a clear melting point.

• Amorphous solids are always stronger than crystalline solids.

• Amorphous solids can flow like liquids at high temperatures.

A solid substance has a low melting point and is a poor conductor of heat and electricity. What category of solid is this substance?

• Ionic solid

• Covalent solid

• Metallic solid

• Molecular solid

A solid substance is a good electrical conductor and has a very high melting point. One of its allotropes is a substance that is very hard. The solid is an example of..

• Ionic solid

• Covalent solid

• Molecular solid

• Metallic solid

In the crystal structure of quartz, the bonds between atoms can be described as

• Ionic bond

• Covalent bond

• Intermolecular forces

• Metallic bond

One of the properties of ionic solids is

• Good conductivity in solid state

• High vapor pressure

• Low melting point

• Soluble in polar solvents

Which of the following is an example of a metallic crystal solid?

• carbon

• Silica

• AgCl

• Tungsten

Which of the following is an example of a covalent crystal solid?

• SiO2

• Al

• Ar

• NaF

Particles or molecules of solid substances will remain stationary in the lattice (no vibrations occur) only at the temperature

• 0°C

• 0 K

• 298 K

• 273 K

Y iodine molecules are bound in the crystal lattice by

• London forces

• Dipole-dipole interactions

• Covalent bonds

• Ionic bonds