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