Please mark below all of the statments that correctly describe the physical properties of glass.

Glasses do not have slip systems.Glasses consist of both covalent and ionic bonding.Glasses are brittle at room temperature.Glasses are amorphous and have no long range symmetry.The volume of a sample of glass depends on its cooling rate.Glasses must consist of network formers and modifiers.

Glasses do not have slip systems

Glasses are brittle at room temperature Glasses are amorphous and have no long range symmetry
The volume of a sample of glass depends on its cooling rate

Glasses do not have slip systems

Glasses are brittle at room temperature

Glasses are amorphous and have no long range symmetry

The volume of a sample of glass depends on its cooling rate

YES

To determine which statements correctly describe the physical properties of glass, we can analyze each statement individually.

1. Glasses do not have slip systems.
Explanation: Slip systems refer to the ability of a material to undergo plastic deformation along specific crystallographic planes. However, glasses do not have a regular crystal structure and therefore do not have slip systems. Thus, this statement is correct.

2. Glasses consist of both covalent and ionic bonding.
Explanation: This statement is generally true. Glasses are typically composed of atoms bonded together by a combination of covalent and ionic bonds. The specific bonding types can vary depending on the composition of the glass. For example, silica-based glasses primarily consist of covalent bonds, while other types of glasses may involve more significant ionic bonding.

3. Glasses are brittle at room temperature.
Explanation: Brittle materials are those that tend to fracture when subjected to stress rather than undergoing significant plastic deformation. Glass is known for its brittleness and tendency to break rather than bend or deform. Therefore, this statement is correct.

4. Glasses are amorphous and have no long-range symmetry.
Explanation: Amorphous materials lack a regular crystalline structure and do not possess long-range symmetry. Glasses are considered amorphous, meaning their atomic arrangement lacks the ordered patterns found in crystalline solids. Thus, this statement is correct.

5. The volume of a sample of glass depends on its cooling rate.
Explanation: This statement is not entirely accurate. The cooling rate affects the formation of glass, but once a glass is formed, its volume remains unchanged regardless of the cooling rate. The cooling rate affects the atomic arrangement, density, and internal stress in the glass, but it does not affect its volume.

6. Glasses must consist of network formers and modifiers.
Explanation: This statement is generally true. Glasses typically consist of network formers, such as silica (SiO2), which contribute to the formation of a three-dimensional network of atoms or ions. Modifiers, such as sodium oxide (Na2O) or calcium oxide (CaO), are added to modify the properties of the glass, such as its thermal expansion or melting point.

In summary, the statements that correctly describe the physical properties of glass are:
- Glasses do not have slip systems.
- Glasses consist of both covalent and ionic bonding.
- Glasses are brittle at room temperature.
- Glasses are amorphous and have no long-range symmetry.
- Glasses must consist of network formers and modifiers.