periodic table

an arrangement of the elements according to their atomic numbers so that elements with similar properties are in the same column and properties repeat from row to row

• Periodic Table of Elements

• Atomic Theory

• Isotopes

• Subatomic Particles

a negatively charged subatomic particle that orbits the nucleus of an atom

• proton

• neutron

• electron

• matter

a subatomic particle, contained in the nucleus of an atom, having the same mass as a proton but no electrical charge

• proton

• neutron

• electron

• matter

the positively charged subatomic particle contained in the nucleus of an atom

• proton

• neutron

• electron

• matter

a unique number for each element that equals the number of protons in an atom of that element

• element name

• element symbol

• atomic number

• atomic mass

the mass of an atom, calculated by adding the number of protons and neutrons in the nucleus of the atom

• element name

• element symbol

• atomic number

• atomic mass

a row on the Periodic Table of Elements

• family

• period

• row

• isotope

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

an atom or group of atoms that has gained or lost one or more electrons and is now either positively or negatively charged

• isotope

• ion

• orbital

• nucleus

An element has the mass number 12 and atomic number 6. The number of neutrons in it is:

• 6

• 10

• 4

• 8

Tags

NGSS.MS-PS1-1

What are the vertical columns on the periodic table called?

• groups

• periods

• protons

• valence electrons