ATOMIC STRUCTURE

ATOMIC STRUCTURE

Multiple Choice

What is the smallest unit of matter? It is composed of protons and neutrons, held together in the nucleus, and electrons around the nucleus in different electron orbitals, which form an electron cloud.

• cell

• nucleus

• atom

• electron

Multiple Choice

Believed that all atoms of the same element would be the same.

• John Dalton
• JJ Thomson
• Niels Bohr
• Modern Atomic Theory

Multiple Choice

Believed that electrons traveled around the nucleus in definite paths.

• Niels Bohr
• John Dalton
• Modern Atomic Theory
• Ernest Rutherford

Multiple Choice

Discovered that the atom has a small, dense, positively charged nucleus.

• Ernest Rutherford
• Heisenberg
• Democritus
• JJ Thomson

Multiple Choice

Who believed that electrons were scattered amongst positively charged material.

• JJ Thomson
• Ernest Rutherford
• John Dalton
• Niels Bohr

Multiple Choice

The atomic number of an element that has 9 protons, 9 electrons, and 10 neutrons is _____.

• 9
• 10
• 19
• 28

Multiple Choice

Which subatomic particles contribute the most to the mass of an atom?

• Protons, Neutrons, Electrons
• Protons only
• Protons and Electrons
• Protons and Neutrons

Multiple Choice

How is the number of neutrons in the nucleus of an atom calculated?

• Add the number of e- and p+ together
• Subtract the number of e- from p+
• Subtract the number of p+ from the mass number
• Add the mass number to the number of e-

Multiple Choice

What does the 6 represent?

• Atomic mass

• atomic number

• chemical symbol

• element name

Multiple Choice

In order for an atom to be neutral what has to be true?

• The atom has more protons than neutrons
• The atom has more neutrons than protons
• The atom has the same number of protons and neutrons
• The atom has the same number of protons and electrons

Multiple Choice

Most of the mass in an atom is made up of _____________________?

• protons and electrons
• protons and neutrons
• neutrons and electrons
• electrons and quarks

Multiple Choice

What is the mass number of this atom?

• 1

• 3

• 4

• 7

Multiple Choice

What is the atomic number of this atom?

• 1

• 3

• 4

• 7

Multiple Choice

What is the mass number?

• the number of protons in the nucleus

• the number of protons and neutrons in the nucleus

• the number of neutrons in the nucleus

• the number of protons and electrons in the atom

Multiple Choice

What is the atomic number?

• the number of protons in the nucleus

• the number of protons and neutrons in the nucleus

• the number of neutrons in the nucleus

• the number of protons in the energy levels

Multiple Choice

How many electrons does sulfur have

• 16

• 32

• 48

• 12

Multiple Choice

How many protons does sulfur have?

• 32

• 16

• 48

• 12

Multiple Choice

The number 16 for the atomic element sulfur is the

• ionic number

• isotope

• atomic mass

• atomic number

Multiple Choice

Look at this picture of Argon off the periodic table. Which of the following is true for this element?

• 18 neutrons

• 40 neutrons

• 22 neutrons

• 21.9 neutrons

Multiple Choice

Look at this picture of Argon off the periodic table. Which of the following is true for this element?

• 18 protons

• 40 protons

• 22 protons

• 21.9 protons

Multiple Choice

An atom has atomic number 4 the number of electrons in its outermost orbit will be ?

• 2

• 6

• 4

• 1

Multiple Choice

Which if the following is the correct arrangement of electrons in different shells for an element with atomic number 17 ?

• 2,8,7

• 8,8,1

• 2,8,1,6

• 2,8,2,5

Multiple Choice

How many electrons can the first energy level hold?

• 1
• 2
• 8
• 0

Multiple Choice

Who is this?

• Snow White

• Ella

• Anna

• Rapunzel