No. It doesn't contain lead.
No, crayons are made of wax.
No, the crayons do not contain the calcium carbonate. Calcium carbonate and other foreign materials are usually extruded from crayon.
Microwaving crayons can cause them to melt and possibly catch fire, as crayons contain wax which is flammable. This can damage your microwave and is a fire hazard. It is not recommended to microwave crayons.
No, tin does not contain lead. Tin is a separate element from lead and does not naturally contain lead in its composition.
No, stainless steel does not contain lead.
Normally the carpets on your floors do not contain lead.
crayons = Malkreide (sing.) crayons = Farbkreide (sing.) crayons = Buntstifte (pl.) crayons = Wachsstifte (pl.)
crayons - les crayons which means pencils. If coloured, they are crayons de couleur.
There isn't an easy way. Modern paints contain no lead. If it is old paint there is a chance it may contain some lead.
No, zinc does not contain lead. Zinc and lead are two different elements with distinct chemical properties.
Crystal glass contain lead.
Newsprint does not contain lead. It is typically made from wood pulp and does not require the use of lead in its production process.