Atoms

What are the three subatomic particles in an atom?

• Proton, Neutron, Molecule

• Proton, Neutron, Electron

• Proton, Electron, Atom

• Neutron, Electron, Molecule

What is the charge of a proton?

• Positive

• No charge

• Negative

• Neutral

Where are the electrons located in an atom?

• In the nucleus

• Outside the nucleus

• In the first energy level only

• In the neutron

Tags

NGSS.HS-PS1-1

What does the atomic number represent?

• Number of protons only

• Number of electrons only

• Number of protons and electrons

• Number of neutrons

How do you find the number of neutrons in an atom?

• Atomic weight - Atomic number

• Atomic number + Electrons

• Protons - Electrons

• Atomic number - Electrons

What is the mass of an electron in amu?

• -1 amu

• 0 amu

• 1 amu

• ~1 amu

Which of the following is not considered matter?

• Salt

• Air

• Water

• Light

What is the maximum number of electrons that can fit in the second energy level?

• 18 electrons

• 2 electrons

• 8 electrons

• 32 electrons

Who made the periodic table?

• Isaac Newton

• Dmitri Mendeleev

• Albert Einstein

• Niels Bohr

What is the atomic mass unit (amu) defined as?

• The total mass of protons and neutrons

• The mass of one electron

• The mass of one proton

• 1/12 the mass of a carbon-12 atom