Atomic Structure Review

What is the difference between protons and electrons?

• Protons are negatively charged particles found in the nucleus, while electrons are positively charged particles that orbit the nucleus.

• Protons are positively charged particles found in the nucleus, while electrons are negatively charged particles that orbit the nucleus.

• Protons and electrons are both positively charged particles found in the nucleus.

• Protons are neutral particles, while electrons are negatively charged particles that orbit the nucleus.

Which number is the number of protons? Also called atomic number

• smaller number at the top of the square.

• larger number at the bottom of the square.

• number of neutrons in the nucleus.

• number of electrons in the outer shell.

What is the location and charge of: electron, proton, neutron?

• electron: outer shell and positive, proton: nucleus and negative, neutron: nucleus and no charge

• electron: outer shell and negative, proton: nucleus and positive, neutron: nucleus and no charge

• electron: nucleus and negative, proton: outer shell and positive, neutron: nucleus and no charge

• electron: outer shell and no charge, proton: nucleus and positive, neutron: nucleus and negative

What is the significance of the periodic table?

• It organizes elements based on their atomic number and recurring chemical properties.

• It lists all known elements in alphabetical order.

• It provides a visual representation of chemical reactions.

• It categorizes elements based on their color and size.

Who organized the periodic table based on proton number?

• Mendeleev

• Dmitri Mendeleev

• John Dalton

• Henry Moseley

What does it mean for an atom to be neutral?

• Same number of protons and electrons.

• More protons than electrons.

• More electrons than protons.

• No protons or electrons.

Which subatomic particle does not contribute to the mass of an atom?

• protons

• neutrons

• electrons

• positrons

What is the mass number of an atom?

• The total number of electrons in an atom.

• The total number of protons and neutrons in the nucleus of an atom.

• The total number of protons in an atom.

• The total number of neutrons in an atom.

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

• Number of neutrons = Atomic mass + Number of protons.

• Number of neutrons = Atomic mass - Number of protons.

• Number of neutrons = Atomic mass x Number of protons.

• Number of neutrons = Atomic mass / Number of protons.

What is an isotope?

• Atoms of different elements with the same number of neutrons.

• Atoms of the same element that have the same number of protons but different numbers of neutrons.

• Atoms that have the same mass but different charges.

• Atoms that are chemically identical but physically different.