According to one of my favorite sources (www.webmineral.com), the hardness of elemental lead is 2.0 to 2.5 on Mohs Hardness Scale.
As a metal americium is probably hard, but detailed data about his hardness are not published.
Lead is a heavy metal that is soft and gray in color, commonly used in pipes, batteries, and roofing materials. Copper is a reddish-brown metal that is known for its excellent conductivity and is used in electrical wiring, plumbing, and as a component in various alloys. Both metals can be toxic in high concentrations, but lead is considered to be more harmful to human health.
Sodium is considered a soft metal. It is malleable and easily cut with a knife.
Lead is a soft heavy metal that is poisonous when ingested or inhaled. Its compounds, such as lead oxide and lead acetate, can be harmful to the environment and human health. Lead poisoning can cause a range of symptoms, including abdominal pain, neurological issues, and developmental delays in children.
Soap can be both hard and soft, depending on the ingredients used in its formulation. Traditional bar soaps are usually hard, while liquid soaps tend to be soft. The hardness of soap is often influenced by the amount of oils and fats in the recipe.
They should use soft lead because I think so!
As a metal americium is probably hard, but detailed data about his hardness are not published.
If you mean the erasers that have a soft side and a hard side, it is because the soft side is designed to erase lead or graphite from a pencil and the hard side is for erasing ink.
Hard
Astronauts should choose pencils with hard lead, as they are less likely to break and create debris in a microgravity environment. Hard lead also provides finer lines, which can be beneficial for precise writing or drawing. Soft lead can smudge more easily and may not perform as well in the vacuum of space. Ultimately, durability and functionality are key considerations for tools used by astronauts.
hard
it is hard and sometimes soft
soft you can bend and hard you can not
soft
Soft
"Treated wood can be soft or hard." But, generally what is bought from a lumberyard is soft.
Solid is hard. It is nt soft.