elements and atoms

JJ Thomson discovered what subatomic particle

• nucleus

• neutron

• proton

• electron

Rutherford discovered what part of the atom

• nucleus

• neutron

• proton

• electron

Who proposed the theory that atoms orbit the nucleus in specific orbits.

• Bohr

• Democritus

• Rutherford

• Chadwick

This particle balances the charges from the protons to make the atom neutral

• proton

• electron

• neutron

• nucleus

These particles are found in the nucleus

• protons and electrons

• nucleus and neutrons

• protons and neutrons

• electrons and neutrons

John Dalton stated:

• elements are made of atoms
• atoms of a given element are identical
• atoms cannot be subdivided, created, nor destroyed
• all of the above

Tags

NGSS.HS-PS1-7

The nucleus of an atom can be described as:

• spacious and negatively charged
• dense and positively charged
• spacious and positively charged
• dense and negatively charged

Tags

NGSS.HS-PS1-8

Electrons are not factored into atomic mass because:

• They are so small their mass is negligible
• They're not in the nucleus
• They're too big
• They move so quickly their mass is zero

What does the nucleus of an atom contain?

• Electrons and neutrons
• Protons and neutrons
• Neutrinos and positrons
• DNA and RN

Tags

NGSS.MS-PS1-1

True or False: The majority of an atom is made up of empty space

• True
• False