Ch. 4 The Structure of the Atom

Presentation

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Chemistry

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9th - 12th Grade

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Practice Problem

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Easy

Mindy Creel

Used 12+ times

FREE Resource

57 Slides • 12 Questions

Multiple Choice

What did Democritus believe to be true about the atom?

Democritus believed that atoms are indivisible particles that make up all matter.

Democritus claimed that atoms are made of smaller particles.

Democritus thought atoms could be created and destroyed.

Democritus believed that atoms are large and visible particles.

Multiple Choice

What were Dalton's beliefs regarding the atom?

Dalton thought all atoms are identical in mass and properties.

Dalton claimed that atoms can combine in fractional ratios.

Dalton believed that atoms are indivisible, unique to each element, and combine in whole-number ratios.

Dalton believed that atoms can be created and destroyed.

Multiple Choice

What experiment was used to discover the electron?

Photoelectric effect experiment by Albert Einstein

Cathode ray experiment by J.J. Thomson

Oil drop experiment by Robert Millikan

Gold foil experiment by Ernest Rutherford

Multiple Choice

What experiment was used to discover the nucleus?

Thomson's cathode ray experiment

Millikan's oil drop experiment

Bohr's atomic model experiment

Rutherford's gold foil experiment

Multiple Choice

Who discovered protons and neutrons?

Niels Bohr discovered protons; Albert Einstein discovered neutrons.

Ernest Rutherford discovered protons; James Chadwick discovered neutrons.

Marie Curie discovered protons; Max Planck discovered neutrons.

Isaac Newton discovered protons; Richard Feynman discovered neutrons.

Multiple Choice

What does the atomic number tell us?

The atomic number shows the chemical reactivity of an element.

The atomic number represents the number of electrons in an atom.

The atomic number tells us the number of protons in an atom.

The atomic number indicates the mass of an atom.

Multiple Choice

What is the mass number equal to?

The number of electrons in an atom.

The total number of particles in an atom.

The average weight of an atom.

The sum of protons and neutrons in an atom's nucleus.

Multiple Choice

What are isotopes?

Isotopes are elements with different numbers of protons and neutrons.

Isotopes are the same as ions but with different charges.

Isotopes are elements that have the same atomic mass but different chemical properties.

Isotopes are variants of elements with the same number of protons but different numbers of neutrons.

Multiple Choice

How do mass number and atomic mass differ?

Mass number includes electrons; atomic mass does not.

Mass number is the average of all isotopes; atomic mass is the total of protons.

Mass number is always a decimal; atomic mass is a whole number.

Mass number is a whole number representing protons plus neutrons; atomic mass is a decimal reflecting the weighted average mass of isotopes.

Multiple Choice

What is alpha radiation?

Alpha radiation is a type of non-ionizing radiation.

Alpha radiation consists of beta particles, which are electrons.

Alpha radiation is a type of ionizing radiation consisting of alpha particles, which are like helium nuclei.

Alpha radiation is a form of electromagnetic radiation like X-rays.

Multiple Choice

What is beta radiation?

Beta radiation is a form of electromagnetic radiation like X-rays.

Beta radiation is a type of radiation that consists of alpha particles.

Beta radiation is a type of radiation like electrons emitted during beta decay.

Beta radiation is a type of radiation emitted during nuclear fusion.

Multiple Choice

What is gamma radiation?

Gamma radiation is a type of particle radiation.

Gamma radiation is low-energy sound waves.

Gamma radiation is a form of chemical energy.

Gamma radiation is high-energy electromagnetic radiation emitted during radioactive decay.

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