science crossword

2. Philosopher that declared that all matter was made of only four elements: fire, air, water, and earth.
3. the number of protons in the nucleus of an atom and helps order the elements on the periodic table.
5. Greek philosopher that said all matter is made of tiny particles called "atomos" or atoms that cannot be broken down.
7. His part of the atomic theory concluded that atoms are composed of a dense positive charge with negatively charge electrons interspersed throughout.
10. His part of the atomic theory concluded that atoms are a solid sphere of matter that was uniform throughout and very alike atom was exactly alike.
11. Bohr proposed that an electron is found only in specific orbits, around the nucleus
12. A subatomic particle that has no charge and that is found in the nucleus of an atom

1. Greek philosopher that said all matter is made of tiny particles called "atomos" or atoms that cannot be broken down.
3. a theory that states that all matter is composed of tiny particles called atoms.
4. A subatomic particle that has a positive charge and that is found in the nucleus of an atom
6. Electrons move at high speeds in an electron cloud around the nucleus and the location of electrons are determined by the energy of the element.
8. the total number of protons and neutrons in the nucleus of an atom
9. subatomic particle that has a negative charge and that is found outside surrounding the nucleus and atom.