Magnetism is a force that acts only on contact (true or false)

Question 5 match each term to its description. match term definition excess reactant a) reactant that can produce a lesser amount of the product limiting reactant b) reactant that can produce more of the product theoretical yield c) amount of product predicted to be produced by the given reactants

Amatch has about 21 milligrams of red phosphorus coating the tip. how many atoms of phosphorus is this?

Which type of reaction involves the absorption of energy from the surroundings?