Periodic Table and Atomic Structure Review

Each inner energy level of an atom has a maximum number of ____ it can hold

• neutrons
• quarks
• electrons
• protons

A chemical symbol represents the ____ of an element.

• reaction
• name
• period
• group

Horizontal rows of the periodic table are called ____.

• periods
• clusters
• families
• groups

Atoms of the same element with different numbers of neutrons are called ____.

• isotopes
• metals
• metalloids
• radioactive elements

A particle that moves around the nucleus is a(n) ____.

• electron
• proton
• neutron
• quark

A certain atom has 26 protons, 26 electrons, and 30 neutrons. Its mass number is ____.

• 26
• 30
• 52
• 56

Tags

NGSS.MS-PS1-1

The chart showing the classifications of elements according to their properties and increasing atomic numbers is called the periodic table.

• true
• false

The mass of an electron is about equal to the mass of a proton.

• true
• false

Elements arranged in vertical columns in the periodic table are called periods.

• true
• false

The symbol for chlorine is C.

• true
• false