i think Dalton said it
Someone Rutherford.
The schoolteacher who studied atoms and proposed an atomic theory was John Dalton, known for his development of modern atomic theory in the early 19th century. Dalton's theory proposed that all matter is composed of small, indivisible particles called atoms that are unique to each element and are rearranged in chemical reactions. His work formed the foundation for modern chemistry.
Everything is made of atoms, which are the smallest units of an element. Atoms are composed of even smaller particles called protons, neutrons, and electrons.
Yes, an element is composed of millions of identical atoms.
The most toxic element on Earth is considered to be polonium, specifically polonium-210. It is a highly radioactive element that emits alpha particles, making it extremely toxic if ingested or inhaled. It is about 250,000 times more toxic than hydrogen cyanide.
Someone Rutherford.
Sodium is a metallic element and is composed of sub-atomic particles.
Atoms. Which are composed of protons, neutrons and electrons.
John Dalton proposed the atom theory in the early 19th century. He suggested that all matter is made up of tiny, indivisible particles called atoms, and that all atoms of a specific element are identical in size, mass, and properties.
The simplest organized substance known is an element, which is composed of small particles called atoms. Each type of element has a unique structure and properties based on the arrangement of its atoms.
The schoolteacher who studied atoms and proposed an atomic theory was John Dalton, known for his development of modern atomic theory in the early 19th century. Dalton's theory proposed that all matter is composed of small, indivisible particles called atoms that are unique to each element and are rearranged in chemical reactions. His work formed the foundation for modern chemistry.
yes
Yes, everything is made of tiny particles - if it is an element then the particles are atoms of that element, if it is a compound then the particles are molecules composed of atoms of the elements which make up the compound.
Diamond is composed of the element carbon.
Elements are the simplest type of chemical. An element is composed of atoms. Atoms in turn are composed of subatomic particles. However, all substances are composed of atoms, and there are no substances composed only of subatomic particles - at least, not on Earth. It is believed that there exist neutron stars composed only of neutrons. In that situation, you could say that the neutron is the smallest type of substance.
Aristotle believed in a fifth element called "aether" or quintessence, which he believed composed celestial bodies. He proposed that matter was made up of four elements: earth, water, air, and fire. These elements combined in different proportions to form all substances in the physical world.
Everything is made of atoms, which are the smallest units of an element. Atoms are composed of even smaller particles called protons, neutrons, and electrons.