Atom and Periodic Table Basics

Where are electrons of an atom found?

• Nucleus

• Electron Cloud

• Some are in the nucleus and some in the electron cloud.

• They are moving everywhere.

Which one of these is NOT located in the element square on the Periodic Table?

• Atomic Number

• Atomic Mass

• Room Temperature

• Chemical Symbol

What is the mass number?

• the number of protons

• the number of protons and neutrons

• the number of neutrons

• the number of protons and electrons

Atoms are mostly filled with?

• electrons

• empty space

• protons

Tags

NGSS.MS-PS1-1

Why is water NOT on the periodic table?

• It is naturally occuring

• It is a compound, not an element

• It exists as a solid, a liquid, and a gas

• Its chemical formula doesn't fit

How many valence electrons does this atom have?

• 2

• 4

• 6

• 8

Tags

NGSS.MS-PS1-1

Which one can be found on the periodic table?

• Compound 

• Element

• Mixture 

True or False: Ice cubes and water are made up of the same atoms (hydrogen and oxygen).

• True

• False

Tags

NGSS.MS-PS1-1

True of False: The atomic weight (the decimal) identifies how many protons and electrons are found in an element.

• True

• False

Which particles are found in the energy rings (levels) surrounding an atom's nucleus?

• Protons

• Neutrons

• Electrons

• Both protons and electrons