Atoms, Ions, & Isotopes

What happens when an atom gains an electron?

• It becomes a positive ion.

• It becomes a neutral atom.

• It becomes a negative ion.

• It loses its charge.

What does it mean for an atom to be neutral?

• An atom has more protons than electrons.

• An atom has more electrons than protons.

• An atom has an equal number of protons and electrons.

• An atom has no neutrons.

What is an isotope?

• Atoms of different elements that have the same number of protons.

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

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

• Atoms that are chemically identical but have different atomic masses.

What is the billiard ball model?

• A model of the atom that describes it as a solid, indivisible sphere.

• A model that illustrates the atom as a small, charged nucleus surrounded by electrons.

• A representation of the atom that shows it as a cloud of probability.

• A theory that explains atomic behavior using wave functions.

What is the plum pudding model?

• A model that describes the atom as a solid sphere with no internal structure.

• An early model of the atom that proposed that electrons are embedded in a positively charged 'soup'.

• A theory that states atoms are indivisible and indestructible.

• A modern model that depicts electrons orbiting the nucleus in fixed paths.

What is the electron cloud model?

• A model that describes electrons as particles in fixed orbits around the nucleus.

• A model of the atom that describes electrons as being in a cloud-like region around the nucleus, rather than in fixed orbits.

• A theory that states electrons do not exist in any specific location around the nucleus.

• A representation of the atom that shows electrons as solid spheres surrounding the nucleus.

What is an ion?

• An atom or molecule that has gained or lost one or more electrons, resulting in a net charge.

• A stable atom with a neutral charge.

• A particle that cannot gain or lose electrons.

• A molecule that is always positively charged.

What identifies an atom?

• The number of neutrons in its nucleus.

• The number of electrons in its outer shell.

• The number of protons in its nucleus.

• The total mass of the atom.

What is an electron?

• A positively charged particle found in the nucleus of an atom.

• A negatively charged particle that orbits the nucleus of an atom.

• A neutral particle that is part of the atomic nucleus.

• A particle that has no charge and is found outside the atom.

What is a neutron?

• A positively charged particle found in the nucleus of an atom.

• A neutral particle found in the nucleus of an atom.

• A negatively charged particle that orbits the nucleus of an atom.

• A particle that exists outside the atom and has no charge.