Foundations of Atomic Theory
Atomic Theories
The Structure of the Atom
Counting Atoms
Relating Mass to Numbers of Atoms
100
States that matter cannot be created or destroyed by ordinary chemical reactions or physical changes.
What is the law of conservation of mass?
100
Stated: All matter is made of atoms. Atoms of any element are identical, atoms of different elements are not. Atoms can't be subdivided, created, or destroyed. Atoms of different elements combine in whole number ratios to form compounds. In chemical reactions, atoms are combined, separated, or rearranged.
What is Dalton's Atomic Theory?
100
Three subatomic particles.
What are protons, neutrons, and electrons?
100
The mass found on the periodic table can be called these two names.
What is atomic mass and molar mass?
100
6.022x10^23 atoms (or molecules) per mole is this scientist's number.
What is Avogadro's Number?
200
The transformation of one or more substances into new substances.
What is a chemical reaction?
200
Dalton's Atomic Theory explained this law.
What is the law of conservation of mass?
200
This scientist discovered the nucleus of the atom with his gold foil experiment.
Who is Rutherford?
200
An element with multiple atomic masses have these.
What are isotopes?
200
The amount of substance in 12g of carbon-12.
What is a mole?
300
Two elements or more combined together.
What is a compound?
300
Dalton reasoned that these were composed of atoms.
What is elements?
300
The nucleus is comprised of these two subatomic particles.
What are protons and neutrons?
300
Designate deuterium in both hyphen notation and nuclear symbol notation.
What is Hydrogen-2?
300
The mass of 6.022x10^23 particles of any pure substance.
What is the molar mass?
400
States that chemical compounds contain the same elements with the same proportions by mass regardless of the size or source of the sample.
What is the law of definite proportions?
400
Carbon Monoxide and Carbon Dioxide are an example of this law.
What is law of multiple proportions?
400
Electrons mass is much less than, less than, equal to, greater than, or much greater than the mass of a proton.
What is much less than?
400
Chlorine-37 has this many protons, neutrons, and electrons.
What is 17 protons, 20 neutrons, and 17 electrons?
400
The mass in grams of 3.50mol of copper.
What is 222g?
500
States that two or more compounds can be made from the same elements, but that the ratio will not be the same.
What is the law of multiple proportions?
500
These two theories agreed that (1) all matter is composed of atoms and (2) atoms of any element have different properties from atoms of another element
What are Dalton's Atomic Theory and Modern Atomic Theory?
500
This scientist proved the charge and mass of an electron using his oil drop experiment.
Who is Robert Millikan?
500
Naturally occurring boron is 80.20% boron-11 (amu=11.01amu) and 19.80% of this isotope of boron. The average atomic mass for boron is 10.81 amu.
What is boron-10?
500
The number of moles of silver in 3.01x10^23 atoms of silver.
What is 0.500 moles?
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