Atomic Structure and Properties Test

Which three particles are the basic building blocks of an atom?

• Protons, neutrons, electrons

• Protons, photons, ions

• Neutrons, quarks, electrons

• Protons, positrons, neutrons

Tags

NGSS.MS-PS1-1

The negative particle of an atom is the:

• Proton

• Neutron

• Electron

• Positron

The nucleus of an atom contains:

• Protons only

• Neutrons only

• Protons and neutrons

• Electrons and neutrons

Which particle determines the element’s identity?

• Proton

• Neutron

• Electron

• Positron

Most of an atom’s volume is:

• The nucleus

• The electron cloud

• Neutron space

• The proton ring

Tags

NGSS.MS-PS1-1

Which force keeps electrons from flying away from the nucleus?

• Magnetic force

• Gravitational pull

• Electrostatic attraction

• Strong nuclear force

Tags

NGSS.HS-PS2-4

Atoms are roughly how many times smaller than a grain of salt?

• 10×

• 100×

• 1,000×

• Same size

Which type of microscope can show individual atoms on a surface?

• Electron microscope

• Scanning tunneling microscope

• Light microscope

• Compound classroom microscope

The atomic number equals the number of:

• Protons

• Neutrons

• Electrons + neutrons

• Protons + neutrons

The mass number equals:

• Protons + neutrons

• Electrons + protons

• Neutrons only

• Protons only