Atomic Stucture and Nuclear Chemistry

Which particle has a positive charge?

• electron
• orbital
• proton
• neutron

This particle determines what element you have - the elements identity.

• electron
• proton
• neutron
• valence shell

Tags

NGSS.MS-PS1-1

This causes the mass of the nucleus to increase.

• adding an electron
• adding a neutron
• more orbitals
• adding negatively charged particles

Tags

NGSS.HS-PS1-8

Which particles make up the nucleus of an atom?

• protons and neutrons
• electrons and protons
• electrons, protons, and neutrons
• electrons and neutrons

Tags

NGSS.MS-PS1-1

What charge does the nucleus have and why?

• positive - the neutrons do not have a charge
• positive - the neutrons and protons are positively charged particles
• neutral - the neutral charge dominates the positive charge
• neutral - electrons cancel out the positive charge of the atom

Tags

NGSS.MS-PS1-1

An element with a mass number of 11 and an atomic number of 5 has how many neutrons?

• 11
• 5
• 6
• 16

Tags

NGSS.MS-PS1-1

Elements on the periodic table increase by...

• atomic mass
• size
• mass number
• atomic #

Tags

NGSS.HS-PS1-2

An atom has 13 protons, 15 neutrons and ___ electrons what is its mass number?

• 13
• 26
• 28
• 15

Tags

NGSS.MS-PS1-1

In the modern periodic table elements are arranged by:

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

Who was the first person to come up with the Atomic Theory?

• John Dalton
• Democritus
• Ernest Rutherford
• Niels Bohr