2.1 Vocabulary

Central part of an atom where protons and neutrons are located

• nucleus

• compound

• isotope

• ion

Tags

NGSS.HS-PS1-8

a weak interaction that occurs when there is a slight attraction of molecules

• chemical bond

• ionic bond

• covalent bond

• van der Waals forces

Positively charged subatomic particle found in the nucleus

• protons

• neutrons

• electrons

• ions

positively or negatively charged atoms

• protons

• neutrons

• electrons

• ions

Number of protons and neutrons in the nucleus of an atom

• atomic mass

• atomic number

Tags

NGSS.HS-PS1-8

Substance formed by the chemical combination of two or more elements

• molecule

• isotope

• compound

• atom

Forces that hold atoms of elements together

• isotope

• element

• chemical bond

• van der Waals forces

Tags

NGSS.HS-PS1-3

Negatively charged subatomic particle that orbits around the nucleus

• proton

• electron

• neutron

• molecule

Basic unit of matter

• atom

• molecule

• electron

• subatomic particle

Neutral charged subatomic particle bound to protons in the nucleus

• proton

• neutron

• electron

• ion