Introduction to Atoms Test Study Guide

Which parts make up an atom?

• Nucleus and electron cloud

• Protons and neutrons only

• Electrons and protons only

• Only the nucleus

Tags

NGSS.MS-PS1-1

Where are protons found in an atom and what is their charge?

• Nucleus and positive charge

• Nucleus and negative charge

• Cloud and positive charge

• Cloud and negative charge

Where are electrons found in an atom and what is their charge?

• Nucleus and positive charge

• Nucleus and negative charge

• Cloud and positive charge

• Cloud and negative charge

Where are neutrons found in an atom and what is their charge?

• Nucleus and positive charge

• Nucleus and no charge

• Cloud and positive charge

• Cloud and no charge

The number of protons in an atom is equal to the number of _________.

• electrons

• neutrons

• atoms

• molecules

For Oxygen (atomic mass 15.999, atomic number 8), how many neutrons does it have?

• Oxygen has 10 neutrons.

• Oxygen has 6 neutrons.

• Oxygen has 8 neutrons.

• Oxygen has 12 neutrons.

Tags

NGSS.MS-PS1-1

True or False: The electron cloud is most of the volume of the atom.

• True

• False

True or False: The electron cloud is most of the mass of the atom.

• True

• False

What do periods represent on the periodic table?

• Periods are columns on the periodic table.

• Periods are rows on the periodic table.

• Periods are groups of similar elements.

• Periods are the atomic numbers of elements.

What do groups/families represent on the periodic table?

• Groups/families are columns on the periodic table.

• Groups/families are rows on the periodic table.

• Groups/families are groups of similar elements.

• Groups/families are the atomic numbers of elements.