Physical Science Ch. 3 Review

Niels Bohr suggested that electrons are located in different shaped regions around the nucleus.

The nuclear model suggested that the nucleus of an atom is almost as large as the size of the entire atom.

Isotopes of an element always have the same number of protons.

Who first proved that atoms were divisible when he saw evidence of charged particles existing in the atom?

Electrons in the quantum-mechanical model occupy orbits.

What is J. J. Thomson’s atomic model called?

Rutherford’s gold foil experiments gave rise to which atomic model?

With which of these statements would John Dalton have disagreed?

Copper-63 and copper-65 can never have the same number of __________.

Christians should ignore the risk of radiation exposure and trust God to protect them.

The discovery of electrons demonstrated that atoms are not indivisible.

Protons were difficult to discover because they have no electrical charge.

In Rutherford’s experiments, a beam of __________ was directed at a piece of gold foil.

Which of the following is not a way that an ion can be formed?

Aristotle first called particles atomos, from which we get our word atom.

J. J. Thomson discovered the existence of the __________.

John Dalton thought that atoms are indivisible and cannot be destroyed.

Current atomic models show that electrons travel in distinct, spherical orbits around the nucleus.

Ions are atoms that have unequal numbers of protons and neutrons.

The law of electrostatic charges states that

Democritus suggested that matter

Which of the following is not a reason that the Bohr model is still in widespread use today?

The earliest record of a particle theory of matter is from the __________.

Quantum mechanics is a branch of physics that deals with __________.

Sulfide, a sulfur ion indicated by S (-2), has lost two electrons.

The quantum-mechanical model is the primary model used by scientists today.

Quantum mechanics deals with the behavior of matter and energy at the atomic and subatomic levels.

Scientists currently hold to the quantum-mechanical model because it is able to pinpoint the locations of electrons.

Most of an atom consists of empty space.