Periodic Table and Element Square

In the modern periodic table elements are arranged by:

• atomic mass
• atomic number
• valence electrons
• number of isotopes

An element's identity is determined by the number of

• electrons.
• protons.
• neutrons.
• valence.

All matter is made of .....

• energy 
• atoms 
• air
• chemistry

Tags

NGSS.MS-PS1-1

The atomic number of an element tells the number of _____ in the nucleus of an atom of that element.

• protons
• neutrons
• electrons
• isotopes

Most of the mass of an atom is found it its _____.

• electron cloud
• nucleus
• atomic number
• empty space

Each is an example of matter except _____.

• a cloud
• air
• a dust particle
• a beam of light

An element is made up of only one kind of _____.

• isotope
• plastic
• atom
• metal

The number of neutrons in an element is equal to the _________- #of protons.

• electrons
• atomic mass
• atomic number
• group #

What subatomic particles are located in the electron cloud?

• quarks
• protons
• electrons
• neutrons

Which subatomic particle has a negative charge in the atom?

• proton
• neutron
• electron
• quark