Periodic Table and Trends

The common charge on an atom in group 17 would be....

• +1

• +7

• -7

• -1

• 17

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Which of the following is the term for a substance in which all the atoms have the same number of protons

• a compound

• An element

• a molecule

• a solid

• a gas

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

Tags

NGSS.HS-PS1-7

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

• electron cloud
• nucleus
• atomic number
• empty space

Tags

NGSS.HS-PS1-8

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

• isotope
• plastic
• atom
• metal

Tags

NGSS.MS-PS1-1

Rutherford's experiment showed that most of an atom is made up of _____.

• a nucleus
• an electron cloud
• empty space
• alpha particles

Tags

NGSS.MS-PS1-1

What subatomic particles are located in the electron cloud?

• quarks
• protons
• electrons
• neutrons

Tags

NGSS.MS-PS1-1