Compound
The coin was likely made of copper, which is an element commonly used for making coins. When heated, copper reacts with oxygen in the air to form copper oxide, which is a black compound.
A quarter is a coin made of various elements, including copper and nickel. It is not an element itself, but a mixture of different elements.
element. Sulfur dioxide (SO2) is a compound
KCl is a compound not an element.
Beryllium is an element. It is not a compound
cornstarch is a compound element.
Mixture
To calculate the grams of an element in a compound, you need to find the molar mass of the element and the compound. Then, use the formula: (mass of element/molar mass of compound) x molar mass of element. This will give you the grams of the element in the compound.
if it dissolves its a compound if not its an element.
NO = Nitrous Oxide - compound No = Nobelium - element
It is a compound Carbon is an element.
salt is a compound. it is not an element