Unit 3: THe Atomic Theory

This subatomic particle has a positive charge

• proton
• neutron
• electron

This subatomic particle has a negative charge

• proton
• neutron
• electron

This subatomic particle has no charge

• proton
• neutron
• electron

The mass number of an atom is equal to

• protons
• protons + neutrons
• neutrons + electrons
• electrons

The atomic number is equal to the number of ______ in an atom

• protons
• protons + neutrons
• electrons + neutrons
• electrons

The nucleus of an atom has a ____ charge

• positive
• negative
• neutral

Tags

NGSS.HS-PS1-8

Which element has 37 protons

• Rb
• Ca
• Si
• Cl

What is the mass number of an element that has 3 protons, 6 neutrons, and 3 electrons?

• 7
• 6
• 9
• 3

Isotopes of an element have a different number of

• protons
• neutrons
• electrons

What atom matches this electron configuration?
1s²2s²2p⁶3s²3p⁶4s²3d¹⁰

• Zinc
• Copper
• Nickel
• Germanium

Tags

NGSS.HS-PS1-1