Atoms and the Periodic Table Review

All elements in the same group have the same number of ___.

• protons
• neutrons
• atomic mass units
• valence electrons

The atomic number tells you what?

• number of electrons
• number of protons
• number of neutrons
• both electrons and protons in an atom.

what does the 6 represent?

• Atomic mass
• atomic number
• chemical symbol
• element name

Tags

NGSS.HS-PS1-1

Who developed the Law of Conservation of Mass and organized all elements into four different groups?

• Amedeo Avogadro

• Henri Becquerel

• John Dalton

• Demokritos

• Antoine Lavoisier

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

What does 12.011 represent?

• atomic mass
• atomic number
• element name
• chemical symbol 

Tags

NGSS.MS-PS1-1

An atomic number of 8 means the atom has ________ protons.

• 7

• 8

• 16

• 88

True or false: The atomic number of an element is the same as the number of protons of its atoms.

• True

• False

What is the center of an atom containing protons and neutrons?

• nucleus

• neutron

• proton

• electron cloud

Tags

NGSS.MS-PS1-1

• Electron Cloud, positive
• Nucleus, negative
• Electron Cloud, negative
• Electron Cloud, neutral

Tags

NGSS.MS-PS1-1

Which particle has a positive charge?

• electron

• orbital

• proton

• neutron

Tags

NGSS.MS-PS1-1