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Structure of Matter

QuestionAnswer
The shell number (n) of an atom is called the ___________ principal quantum number
The periodic table of elements was developed by __________ in the late 19th century Mendeleev
The maximum number of electrons that can exist in an electron shell is calculated with the formula 2N^2
A neutral atom has the same number of _______ and electrons protons
The chemical element is determined by the number of _____ in the atom protons
Which British unit is equivalent to the newton pound
What are the fundamental particles of an atom neutron, electron, proton
When atoms of various elements combine, they form _______ molecules
The innermost electron shell is symbolized by the letter ______ K
Which of the following is a classic radiologic unit Rem
Aluminum has an atomic number of 13. How many protons does it have 13
The periodic table presents the elements in the order of atomic number
A moving object has ________ energy kinetic
The atomic number of an element is symbolized by the letter _____ Z
Atoms and molecules are the fundamental building blocks of matter
The binding energies, or energy levels, of electrons are represented by their ________ shells
Ice and steam are examples of two forms of matter
The smallest particle that has all the properties of an element is a(n) atom
What is the maximum number of electrons allowed in the outermost shell of an atom in the third period, n = 3? 18
Atoms with all electron shells filled are chemically stable
Two identical atoms which exist at different energy states are called _______ isomers
Energy is measured in electron volts, joules
Matter is measured in kilograms
A positively charged nucleus surrounded by negatively charged electrons in well defined orbits is the _______ model of the atom Bohr
What is the removal of an electron from an atom called ionization
When an atom has the same number of protons as another, but a different number of neutrons, it is called an _________ isotope
The biggest source of man-made ionizing radiation exposure to the public is _______ diagnostic x-rays
The atomic number of molybdenum is 42 and the atomic mass number is 98. How many neutrons does it have 56
The basic quantities measured in mechanic are mass, length, time
Exposure is measured in units of grays
The unit of measure that is the same for all systems of measure is the second
The ______is the least penetrating form of ionizing radiation alpha particle
An atom in a normal state has an electrical charge of ________ zero
Created by: DeAndreMitchell
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