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Chemical Foundations Atoms. Ions and Compounds

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