+
Cards In This Set
| Front | Back |
|
Who conceived the basic principles of atomic theory?
|
Dalton
|
|
Atoms of the same element may differ in their _______________.
|
Mass number
|
|
In Rutherford's experiment, a small percentage of the positively charged particles bombarding the metal's surface ____________.
|
....were deflected back toward the source from the metal
|
|
Which of the following makes up the majority of the volume of an atom?
|
Electron Cloud
|
|
Which statement best describes the density of an atom's nucleus?
|
The nucleus occupies very little of the atom's volume but contains most of its mass.
|
|
Dalton's atomic theory helped to explain the law of conservation of mass because it stated that atoms _____________.
|
...could not be created or destroyed.
|
|
Which of the following alkali metals reacts most violently with water?
|
Cesium
|
|
Which of the following elements has chemical properties most similar to that of Sulfur?
|
Oxygen
|
|
The amount of a substance that contains a number of particles equal to the number of atoms exactly 12g of carbon-12 is referred to as a(n) ______.
|
Mole
|
|
______ is the halogen in the 4th period.
|
Bromine
|
|
______ is an isotope of hydrogen that is the most common on Earth.
|
Protium.
|
|
Isotopes differ in atomic mass because they have different numbers of ________.
|
Neutrons.
|
|
The only non-metal in group 14 is ___________.
|
Neutrons.
|
|
________ is a property of metals that allows them to be hammered and reshaped.
|
Malleability
|
|
Iron has an atomic number of __ and an atomic mass of _____.
|
26, 55.85
|
