Atomic Theory

The smallest unit of a pure substance that has the properties of that substance

• element
• atom
• neutron
• compound

Atoms are made up of three basic parts, which are -

• Protons, neutrons, electrons
• neutrinos, protons, neutrons
• quarks, protons, electrons
• electrons, neutrons, and quarks

Tags

NGSS.MS-PS1-1

The nucleus is made up of -

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

Protons have this charge -

• positive
• negative
• neutral
• no charge

Electrons have this charge - 

• positive
• negative
• neutral
• no charge

Tags

NGSS.MS-PS2-3

Neutrons have this charge -

• positive
• negative
• neutral
• They don't exist