- A molecule may contain different types of atoms.
- An element can be composed from different isotopes.
A pure substance is one in which 100% of the particles are the same. This is also a homogeneous substance.
False! Not all chemical reactions take place at the same rate.
If all of the molecules of the substance are the same molecule
All elements, including iron, exist when pure in an electrically neutral state. This does not mean that the elements can not contain charged particles, but rather that the number of total negatively and total positively charged particles must be the same in a pure element.
Pure silver is made up of the element silver. Any further down and you are talking about the particles that make up atoms-- protons, electrons, neutrons and related sub-atomic particles. All of these particles are exactly the same no matter what kind of atom they are part of.
An element.
A pure substance is one in which 100% of the particles are the same. This is also a homogeneous substance.
Your question is incoherent.
false.
False! Not all chemical reactions take place at the same rate.
If all of the molecules of the substance are the same molecule
When water evaporates, it is generally quite pure, but while suspended in the atmosphere, it is exposed to dust particles that become part of the condensate, so the resulting water is not pure, but contaminated with the solid particles that are in the atmosphere in the same vicinity.
True
Element are the pure substances that contain atom of same kind. Atoms are fundamental particles of matter.
Round particles of the same size, as in pure quartz sand.
Electrons are the reason any material is magnetic or not. including iron.
I believe it is in the material. It says that everything has charged particles in it. It also says that in order for a material to be magnetic, then, its atoms have to line up in a certain way so that the electrons in the material all have the same general motion. So if it's a permanent magnet, then the charged particles would be in the material.