Chemistry Chapter 3 Review Game

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The smallest particle of an element that retains the properties of that

element.

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What is an atom?

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A positively charged subatomic particle.

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What is a proton?

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Atoms with the same number of protons but different numbers of

neutrons.

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What is an isotope?

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Total number of protons and neutrons in an

atom.

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What is mass number?

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Total number of protons in the nucleus of an

atom.

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What is atomic number?

Lived from 460 BC to 370 BC and was among first to suggest makeup of

the atom.

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Who was Democritus?

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His theory suggested atoms of the same

element are identical.

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Who is Dalton?

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The range in size of most atomic nuclei is this.

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What is 5 x10-11 m to 2 x 10-10 m?

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He used cathode ray tubes to reason

electrons are part of atoms.

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Who is Thomson?

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Relative mass of an electron.

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What is 1/1840 mass of hydrogen atom?

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The difference between hydrogen 1 and

hydrogen 2.

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What is hydrogen 1 has no neutron, hydrogen 2 has

1?

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Equals one amu.

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What is 1/12 of the mass of carbon-12?

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Chlorine has two isotopes: chlorine-35 and chlorine-37. The atomic mass for chlorine is 35.45 amu.

Which is more abundant?

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What is chlorine-35?

Element’s mass numbers of isotopes: 32 is 19%

abundant and 34 is 81% abundant. What is the average atomic mass?

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What is 33.62 amu?

Mass number of an element with 101 protons and 104

neutrons.

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What is 205?

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Atomic number of an element with 43 protons

and 46 neutrons.

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What is 43?

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Experiment by Rutherford that led him

to believe atoms are mostly empty space.

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What is the Gold Foil Experiment?

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An element has three isotopes with mass numbers and relative abundances of: 68 and 50%, 69 and 25%, 71

and 25%. What is the average atomic mass?

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What is 69 amu?

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Number of particles in the nucleus of an atom with a mass number of

82.

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What is 82 particles?

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Dalton’s Atomic Theory states these things:

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What is: 1) All elements are composed of tiny individual particles called

atoms. 2) Atoms of same element are identical and different from

those of other elements. 3) Atoms of different elements can physically mix or chemically

combine in whole number ratios. 4) Chemical reactions occur when atoms are separated, joined,

or rearranged. Atoms of one element are never changed into atoms of another element in a chemical reaction.

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