Silicone can be used as an alternative to grout between the profile strip and the tile in certain situations. Silicone is flexible, which allows for movement between the profile strip and the tile without cracking. It is also water-resistant and easier to clean than grout. However, grout may provide a more traditional look and can be more durable in high-traffic areas. Ultimately, the decision to use silicone or grout will depend on the specific needs and preferences of the project. **

The black mini-mold spot under the silicone strip in the shower is likely a small patch of mold or mildew. Mold and mildew thrive in damp, warm environments, making the shower an ideal location for their growth. The silicone strip provides a perfect surface for mold to grow on, especially if it is not regularly cleaned and dried. It is important to address this issue promptly to prevent further mold growth and to maintain a clean and healthy shower environment. **

Yes, silicone does stick to silicone. When two silicone surfaces come into contact, they tend to adhere to each other due to their similar chemical composition. This property makes silicone a popular material for creating airtight seals and bonding silicone-based products together. **

It is generally not recommended to apply new silicone on top of existing silicone. The new silicone may not adhere properly to the old silicone, leading to potential issues with adhesion and durability. It is best to remove the old silicone completely before applying a new layer to ensure a proper bond and a long-lasting seal. **

Yes, silicone can be applied on top of existing silicone. However, it is important to ensure that the existing silicone is clean and free of any dirt, dust, or residue before applying new silicone. Additionally, it is recommended to use a silicone primer to promote adhesion between the old and new silicone layers. This will help to create a strong bond and ensure a durable seal. **

Silicone lenses are a type of contact lens made with a silicone-based material, which allows for increased oxygen permeability to the eye. This can help reduce the risk of eye infections and improve overall comfort. Silicone hydrogel lenses are a specific type of silicone lens that also includes hydrogel, a water-absorbing material that helps keep the lenses moist and comfortable for longer periods of time. These lenses are popular for their breathability and comfort, making them a popular choice for contact lens wearers. **

A real collision involves the loss of kinetic energy due to the conversion of energy into other forms, such as heat or sound. In contrast, an elastic collision is a theoretical scenario where no kinetic energy is lost, and the total kinetic energy of the system is conserved. In an elastic collision, the objects involved bounce off each other without any loss of energy, while in a real collision, some energy is dissipated as a result of the collision. **

In a perfectly inelastic collision, the two objects stick together after colliding and move as one mass. This means that kinetic energy is not conserved in a perfectly inelastic collision. In contrast, in an inelastic collision, the objects may deform or bounce off each other, but they do not stick together. Kinetic energy is also not conserved in an inelastic collision, but the objects do not move together as one mass. **