A nucleus of an atom is at its center, it consists of protons and neutrons. The nucleus is roughly 10,000 times smaller than the whole atom.
Yes, that is correct. An oxygen molecule consists of two oxygen atoms bonded together.
true
negatively charged and takes up most of the atoms space Takes up most of the atoms mass and is negatively charged
It is true. Ozone is an allotrope of oxygen.
False, iron atoms are converted to iron oxide
true
is it true the size of a mmole of atoms has a reasonable mass
It is not true !!
True. Atoms are the smallest units of an element therefore making all atoms elements.
True. In 2 molecules of CH4, there are a total of 8 hydrogen atoms because each CH4 molecule contains 4 hydrogen atoms.
True. Atoms in a gas have higher kinetic energy and move more rapidly than atoms in a liquid or solid due to the greater distance between them and the weaker intermolecular forces present in gases. This leads to gases having more freedom of movement compared to the more constrained motion of atoms in liquids and solids.
True. An oxygen molecule typically consists of two oxygen atoms.
True. In a chemical reaction, atoms are rearranged to form new substances, but the total number of atoms present before and after the reaction remains constant. This is known as the Law of Conservation of Mass.
False. In a crystalline structure, atoms are in an orderly arrangement.
Yes, that is correct. An oxygen molecule consists of two oxygen atoms bonded together.
Protons and Electrons. Furthermore this is true of ALL atoms not "most".
true