Modern Chemistry Ch. 3 Application
electron cloud
Most of the volume of an atom is in the
electrons
Since any metal cathode used in a cathode ray tube produced the same charged particles, it was concluded that all atoms contain...
mole
The amount of a substance that contains the number of particles equal to the number of atoms in exactly 12 g of carbon-12 is called a ...
32
The atomic number of nickel-60 is 28. How many neutrons does this isotope have?
Dalton
The basic principles of modern atomic theory were first conceived by
negative particles
The behavior of cathode rays in glass tubes containing gas at low pressure led to conclusion that the rays were composed of ...
atomic number
The number of protons in the nucleus of an element is called its
nuclear forces
The short-range attractive forces that hold nuclear particles together are called ...
mass number
The total number of neutrons and protons in the nucleus of an isotope is called its
Rutherford's Gold Foil experiments
a small % of + charged particles hitting the metal's surface were deflected back toward the source in which experiment
Miliken's Oil drop experiments
the approximate value of the electron's mass was determined by what experiment
14
An atom of silicon-30 contains 14 protons. How many electrons does it have?
CO and CO2
An example of the law of multiple proportions is the existence of
isotopes
Atoms of one element that have different masses are called..
mass number
Atoms of the same element can differ in number of neutrons which affects the...
6
Carbon-14 has 8 neutrons. What is the atomic number of carbon-14?
all atoms of the same element have the same mass
Dalton's atomic theory agreed with modern atomic theory except he said...
conservation of mass
Dalton's atomic theory helped explain that mass could not be created or destroyed. This is known as the law of...
conservation of mass
Dalton's atomic theory helped explain the law of...
multiple proportions
If 2 or more compounds are composed of elements A and B, the ratio of the masses of B combined with 1 g of A and 3 grams of B This demonstrates the law of ...
law of definite proportions
If a particle compound is composed of elements A and B, the ratio of the mass of B to the mass of A will always be the same. This is an example of ...