Foundations of Atomic Theory
States that matter cannot be created or destroyed by ordinary chemical reactions or physical changes.
What is the law of conservation of mass?
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?
Three subatomic particles.
What are protons, neutrons, and electrons?
The mass found on the periodic table can be called this.
What is atomic mass?
6.022x10^23 atoms (or molecules) per mole is this scientist's number.
What is Avogadro's Number?
The transformation of one or more substances into new substances.
What is a chemical change/reaction?
Dalton's Atomic Theory explained this law.
What is the law of conservation of mass?
This scientist discovered the nucleus of the atom with his gold foil experiment.
Who is Rutherford?
An element with multiple atomic masses have these.
What are isotopes?
The amount of substance in 12g of carbon-12.
What is a mole?
Two elements or more combined together.
What is a compound?
Dalton reasoned that these were composed of atoms.
What is elements?
The nucleus is comprised of these two subatomic particles.
What are protons and neutrons?
The value that designates the number of protons in an element on the periodic table.
What is the atomic number?
The mass of 6.022x10^23 particles of any pure substance.
What is the molar mass?
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?
Carbon Monoxide and Carbon Dioxide are an example of this law.
What is law of multiple proportions?
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?
Chlorine-37 has this many protons, neutrons, and electrons.
What is 17 protons, 20 neutrons, and 17 electrons?
The mass in grams of 3.50mol of copper.
What is 222g?
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?
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?
This scientist proved the charge and mass of an electron using his oil drop experiment.
Who is Robert Millikan?
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?
The number of moles of silver in 3.01x10^23 atoms of silver.
What is 0.500 moles?