SAVVAS 7.3.1 Atomic Theory

The scientist responsible for "discovering" the nucleus is:

• Bohr
• Rutherford
• Schroedinger
• Einstein

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

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

How did Rutherford discover the proton?

• Cathode tube ray experiment
• Gold Foil Experiment
• Planetary Model
• Plum Pudding Model

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

The number of protons is equal to the number of electrons for an atom. This means an atom is-

• electrically neutral

• electrically positive

• electrically negative

What determines the identity of the atom?

• protons

• neutrons

• electrons

• isotopes

Which subatomic particle has a neutral charge?

• protons

• neutrons

• electrons

• isotope

What are atoms with the same number of protons but different numbers of neutrons?

• electrons

• protons

• neutrons

• isotopes