no
Copper wire is considered a homogeneous substance because it is made up of only one type of material, which is copper. It has uniform properties throughout its structure, making it a homogeneous material.
Sodium metal is an element, not a compound. It is a pure substance made up of only sodium atoms arranged in a lattice structure, making it a homogeneous material.
Pure Substance.Hg stands for mercury. A pure substance is made of only one type of atom or molecule. Since mercury is an element, it is a pure substance.
It's an element. Check your periodic table.
Copper is an element, as it is a pure substance made up of only copper atoms.
Acetone is a homogeneous mixture because it is a pure substance that is made up of only one type of molecule.
It is a heterogeneous substance if the powder is the only thing you have. It is a homogeneous substance if the powder is mixed in with the water and it is dissolved where you can't see the powder anymore.
Liquid gold-homogeneous Solid-heterogenous
No, carbon is not a heterogeneous mixture. It is not a mixture because it is an element. The term heterogeneous can only be applied to mixtures.
A material made up of only one kind of matter is called a pure substance. It has a uniform composition and specific properties.
This is true by definition. Heterogeneous materials are made of more than one thing (a material made of only one thing is homogeneous). So if it's made of more than one thing, there must be a mixture of two or more things. So, it's a mixture.
A heterogeneous mixture contains multiple chemical substances combined in a non-uniform way, whereas a pure substance contains molecules with only one chemical identity. For example, salt is a pure substance, whereas a mixture of salt an rocks is a heterogeneous mixture.