12 Questions
What is the definition of an atom?
The smallest particle that can exist with the chemical properties of an element
What are atoms made up of?
Neutrons, protons, and electrons
Which part of an atom is positively charged?
Proton
How are elements formed?
By grouping many identical atoms together
Why are protons and neutrons collectively called nucleons?
Because they make up the nucleus of an atom
What instrument is used to observe individual atoms?
Scanning tunneling microscope (STM)
Which sub-atomic particle is responsible for providing an atom with its chemical properties?
Proton
What defines an atom as the smallest particle of an element?
Having the chemical properties of the element
Which scientist proposed the model of the atom wherein protons and neutrons are in the nucleus, and electrons are in orbits around it?
Neils Bohr
In an atom, which part is very small compared to the size of the entire atom?
Nucleus
Why are neutrons and protons collectively called nucleons?
Because they form the nucleus of an atom
What is the approximate diameter of a single atom?
$10^{-10}$ m
This quiz covers basic concepts about atoms, which are the building blocks of all matter. Learn about the properties of atoms, how they combine to form elements, and their role in creating various substances.
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