Atomic Structure Basics

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What is the smallest particle of an element that can be divided and have properties of that element?

Electron

Neutron

Atom (correct)

Proton

Which particle has no charge in the nucleus of an atom?

Proton

Electron

Valence Electron

Neutron (correct)

What describes the atom as a small, positively charged nucleus surrounded by electrons that travel in circular orbits around the nucleus?

Neils Bohr (correct)

Atomic mass

Mass number

Atomic number

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 Signup and view all the answers

What is the charge of the electron cloud surrounding an atom?

Negative charge Signup and view all the answers

How can you calculate the number of neutrons in an atom if you know its atomic number and atomic mass?

$\text{Atomic number} - \text{Atomic mass}$ Signup and view all the answers

Which term refers to a pure substance made of one kind of atom?

Element Signup and view all the answers

What is the number of protons and neutrons collectively known as in an atom?

$\text{Mass Number}$ Signup and view all the answers

What is the fundamental unit used to express the mass of protons and neutrons?

Atomic mass Signup and view all the answers

In an atom, what is at the center core and contains both protons and neutrons?

Nucleus Signup and view all the answers

Which scientist, in 1913, proposed that electrons orbit the nucleus in circular paths?

Niels Bohr Signup and view all the answers

What term is used to describe a negatively charged particle that orbits the nucleus of an atom?

Electron Signup and view all the answers

What does the atomic number of an atom represent?

Number of protons Signup and view all the answers

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 Signup and view all the answers

What mathematical operation is used to calculate the number of neutrons in an atom when atomic number and atomic mass are known?

$-$ (subtraction) Signup and view all the answers

Which part of an atom has no charge and is located in the nucleus?

Neutron Signup and view all the answers

What is defined as anything that has mass and takes up space (volume)?

Mass of a proton and neutron Signup and view all the answers

In an atom, what is considered to be the fundamental particle with a negative charge?

Valence electron Signup and view all the answers