Atoms, Ions and Compounds Crossword Puzzle

QUESTIONS LIST: metals : a solid material that is typically hard, shiny, malleable, fusible, and ductile, with good electrical and thermal conductivity, compound : a thing that is composed of two or more separate elements, gold stein : physicist who first observed canal rays, which are now called protons, democritus : philosopher who thought that all forms of matter were divisible into tiny indivisible particles, he called them atoms, empedocles : philosopher who stated that matter was made of 4 elements: earth, air, fire, and water; aristotle advanced his theory, thompson : physicist who showed that atoms of any element can be made to emit tiny negative particles, which are now called electrons, ions : an electrically charged atom formed by the loss or gain of one or more electrons, isotopes : a form of a chemical element whose atomic nucleus contains a specific number of neutron s, atom : is the defining structure of an element, which cannot be broken by any chemical means, allotropes : refers to one or more forms of a chemical element that occur in the same physical state, nonmetals : an element that doesn't have the ability to conduct heat or electricity, luster, or flexibility, pnictogen : the chemical family that has the synthetic element moscovium, chadwick : physicist who was able to show in 1932 that most nuclei also contain a neutral particle that was named the neutron, mass number : an integer equal to the sum of the number of protons and neutrons of an atomic nucleus, rutherford : physicist who concluded that each gold atom contained a positively charged mass that occupied a tiny volume, he called the mass the nucleus, formula : a concise way of expressing information symbolically, dalton : english schoolmaster who proposed his model of the atom–which was based on experimentation in 1803, metalloids : are the elements found along the stair-step line that distinguishes metals from non-metals, boyle : largely regarded today as the first modern chemist, and one of the pioneers of modern experimental scientific method