18 Questions
What is the smallest particle of an element that can be divided and have properties of that element?
Atom
Which particle has no charge in the nucleus of an atom?
Neutron
What describes the atom as a small, positively charged nucleus surrounded by electrons that travel in circular orbits around the nucleus?
Neils Bohr
How is the number of valence electrons related to elements in the same column of the periodic table?
It remains the same for elements in the same column
What is the charge of the electron cloud surrounding an atom?
Negative charge
How can you calculate the number of neutrons in an atom if you know its atomic number and atomic mass?
$\text{Atomic number} - \text{Atomic mass}$
Which term refers to a pure substance made of one kind of atom?
Element
What is the number of protons and neutrons collectively known as in an atom?
$\text{Mass Number}$
What is the fundamental unit used to express the mass of protons and neutrons?
Atomic mass
In an atom, what is at the center core and contains both protons and neutrons?
Nucleus
Which scientist, in 1913, proposed that electrons orbit the nucleus in circular paths?
Niels Bohr
What term is used to describe a negatively charged particle that orbits the nucleus of an atom?
Electron
What does the atomic number of an atom represent?
Number of protons
How can the number of valence electrons of an element be determined from its position on the periodic table?
By looking at the row number
What mathematical operation is used to calculate the number of neutrons in an atom when atomic number and atomic mass are known?
$-$ (subtraction)
Which part of an atom has no charge and is located in the nucleus?
Neutron
What is defined as anything that has mass and takes up space (volume)?
Mass of a proton and neutron
In an atom, what is considered to be the fundamental particle with a negative charge?
Valence electron
Test your knowledge on the fundamental concepts of atomic structure, including the components of an atom, atomic mass, atomic number, and elements. Learn about the properties and characteristics of protons, neutrons, and electrons.
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