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What is the smallest piece of an element that still represents that element?
Atom
Aristotle and many other greek philosophers thought that matter was made of what 4 elements?
Fire,water,earth,air
Who was the greek philosopher that first had the idea of an atom?
Democritus
What scientist created the modern atomic theory?
John Dalton
What is the charge of an electron?
Negative
What is the charge of a proton?
Positive
What is the atomic number of an atom?
The number of protons
What subatomic particles give atomic mass?
Proton and neutron
What part of an atom can electrons be found?
electron cloud/ outside the nucleus
What part of the atom can protons be found?
The nucleus
Give 2 properties of metals
Give 2 properties of non metals
What are the 3 groups of materials that all matter can be classified into?
Metals, nonmetals, metalloids
If a material conducts electricity, what type of material is it likely to be?
Metal
__________________ means bends easily and can be pulled into wires.
Ductility
If a material is a gas at room temperature what type of material is it likely to be?
Nonmetal
