Atomic Structure

Which subatomic particle has a positive charge?

• proton

• neutron

• electron

• all of these

• none of these

Which subatomic particles are found in the nucleus?

• protons

• neutrons

• electrons

The atomic number is equal to the number of...

• protons

• neutrons

• electrons

• protons + neutrons

Which subatomic particle has a negative charge?

• protons

• neutrons

• electrons

• all of these

• none of these

What is the atomic number of an atom with 11 protons, 12 neutrons, and 11 electrons?

• 11

• 12

• 22

• 23

• 34

The periodic table is organized by ___ number.

• atomic

• mass

• charge

• electron

What is the mass number of an atom with 11 protons, 12 neutrons, and 11 electrons?

• 11

• 12

• 22

• 23

• 34

Which element has an atomic number of 20?

• carbon

• calcium

• chlorine

• cadmium

• neon

Which element has a mass number of 14?

• carbon

• nitrogen

• silicon

• not enough information

Atoms of the same element that have different masses are called...

• ions

• isotopes

• cations

• anions