Atoms Quiz (4.1-4.3)

What is an atom?
A positively charged atom
A negatively charged atom
The smallest particle of an element
The biggest particle of an element
Who was the first Greek Philosopher that suggested the existence of atoms?
Democritus
Aristotle
Socrates
Pythagoras
Who was John Dalton?
A German chemist
A Chinese physicist
An Australian doctor
A British chemist and physicist
What was Dalton's atomic theory?
An element is composed of only one kind of atom
An element is composed of many different kinds of atoms
An element that doesn't contain any atoms
An element that only has 1 proton
What instruments are used to observe individual atoms?
A telescope
A electron microscope
A proton telescope
Nothing
What are electrons?
A negatively charged subatomic particle
A positively charged subatomic particle
A neutrally charged subatomic particle
None
What are protons?
A negatively charged subatomic particle
A positively charged subatomic particle
A neutrally charged subatomic particle
None
What are neutrons?
A negatively charged subatomic particle
A positively charged subatomic particle
A neutrally charged subatomic particle
None
What is atomic number?
The number of protons in the nucleus
The number of electrons in the nucleus
The number of neutrons in the nucleus
The number of electrons and neutrons in the nucleus
What is mass number?
The number of neutrons in the nucleus
The number of protons and neutrons in an atom
The mass of an element
The number of electrons in an atom
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