Atoms and Periodic Table Practice

What is at the top of each square in the periodic table?

• Atomic Number

• Atomic Mass

• Chemical Symbol

• Chemical Name

What is the horizontal row of elements called on the periodic table?

• Column

• Row

• Group

• Period

Who developed the first atomic theory that all matter is made up of atoms that cannot be created, divided or destroyed?

• Dmtri Mendeleev

• JJ Thomson

• Niels Bohr

• John Dalton

Tags

NGSS.HS-PS1-7

Which scientist thought that atoms are solid positive sphere with electrons on the outside?

• John Dalton

• JJ Thomson

• Niels Bohr

• Ernest Rutherford

Who discovered that atoms have a nucleus and later discovered protons in an atom?

• John Dalton

• JJ Thomson

• Niels Bohr

• Ernest Rutherford

Tags

NGSS.HS-PS1-8

Which scientist discovered that atoms had neutrons and have an elctron cloud?

• John Dalton

• JJ Thomson

• James Chadwick

• Niels Bohr

What particles of the atom have no charge?

• Neutrons

• Electrons

• Atom

• Protons

If an atom has equal numbers of protons and electrons it is said to have a ________ charge.

• Negative

• Positive

• Slightly Positive

• Neutral

Tags

NGSS.MS-PS1-1

Which particles in an atom are negatively charged?

• Protons

• Electrons

• Neutrons

• Elements

What is the term for the current thinking that electons move around the outside of the nucleus?

• Electron Cloud

• Proton Cloud

• Proton

• Electron