The soft light metal that colors a flame brick-red is lithium. When lithium is burned, it produces a bright red flame due to the presence of lithium ions in the flame. This characteristic flame color is often used in fireworks and pyrotechnics to create a vibrant red hue. **

Brick walls are not completely soundproof, but they do provide better sound insulation compared to other types of walls. The thickness and density of the brick, as well as any additional insulation or materials used in construction, will impact how much sound can pass through. While brick walls can help reduce noise transmission, they may not completely block out all sounds. **

To brick up a window and plaster it with brick, you will first need to remove the existing window frame and any remaining glass. Then, you will need to build a brick wall to fit the window opening, using bricks and mortar. Once the wall is built, you can then plaster over the bricks to create a smooth finish. It's important to ensure that the new wall is properly supported and sealed to prevent any water or air leakage. **

No, a brick cannot create sparks on its own. Sparks are typically produced when two hard surfaces strike each other with enough force to generate heat and ignite particles. Bricks are not flammable materials and do not contain any components that can create sparks through friction. **

Paving brick 1b quality refers to a type of brick that is considered to have minor imperfections or irregularities that do not affect its overall functionality or durability. These imperfections may include slight variations in color, size, or texture. Paving brick 1b quality is still suitable for use in landscaping and construction projects, but it is typically sold at a lower price compared to higher quality bricks. **

Sand-lime brick is known for its high compressive strength and durability, making it able to withstand a variety of environmental conditions. It is resistant to fire, mold, and pests, and has good thermal insulation properties. Overall, sand-lime brick is a strong and reliable building material that can withstand the test of time. **

Brick generally isolates better than concrete due to its higher density and mass. The density of brick helps to absorb sound waves, reducing noise transmission through walls. Concrete, on the other hand, is less effective at isolating sound due to its lower density and stiffness. Overall, brick is considered a better isolator of sound compared to concrete. **

If you need to report a brick that is causing an issue or hazard, you can contact your local city or municipal government's public works department. They will be able to assist you in addressing the situation and ensuring the brick is properly dealt with. Additionally, if the brick is on private property and causing a problem, you may need to contact the property owner or homeowner's association to report the issue. **