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Chapter 16 Test-Properties of Atoms and the Periodic Table
Terms in this set (49)
Two elements with the same number of protons but a different number of neutrons
the weighted-average mass of all the known isotopes for an element.
average atomic mass
The positively charged center of an atom is called the ...
The particles that make up protons and neutrons are called ...
A(n) ... is a horizontal row in the periodic table.
The ... is the sum of the number of protons and neutrons in an atom.
electrons are located here
Most of the elements to the left of the stair-step line in the periodic table exist .... at room temperature.
What is the term for a repeating pattern?
Which element has properties that are similar to neon?
Which term describes boron?
How many outermost electrons do lithium and potassium have?
What is NOT found in the nucleus of an atom?
In what state is nitrogen found at room temperature?
What element is a shiny element that conducts heat and electricity?
The atomic number of Re is 75. The atomic mass of one of its isotopes 186. How many neutrons are in an atom of this isotope?
The smallest particle of an element that retains the element's properties.
The small, positively charged center of the atom
particles in the nucleus with an electric charge of 1+
electrically neutral particles in the nucleus; they do not have a charge
particles with an electric charge of 1- ; they occupy the space surrounding the nucleus of an atom
Protons and neutrons are composed of smaller particles called ....
the area around the nucleus of an atom where electrons are most likely to be found
the number of protons in an atom's nucleus (equal to ?)
Atoms of the same element that have different numbers of neutrons are called ...
The ... of an element is the weighted average mass of all naturally occurring isotopes of an element.
average atomic mass
Arrangement of elements, arranged by increasing atomic number-not atomic mass- and by periodic changes in physical and chemical properties
The horizontal rows of elements in the periodic table numbered 1-7 are called ...
The vertical columns in the periodic table numbered 1-18 are called ...
a diagram used to represent an element's outermost electron; uses the chemical symbol of an element surrounded by dots to represent the number of electrons in the outermost energy level
electron dot diagram
boron and silicon are...
oxygen, bromine, and carbon are ...
iron, zinc, and copper are ...
A capital letter or a combination of a capital letter and a small letter that is used to represent an element is called a(n) ...
Elements in the middle of the periodic table, groups 4-7, are called the ...
Elements that have some properties of both metals and nonmetals are ...
Each energy level of an atom has a maximum number of ...
Dot diagrams are used to represent ...
Particles of matter that make up protons and neutrons are ...
A chemical symbol represents the ... of an element.
Horizontal rows of the periodic table are called ...
Atoms of the same element with different numbers of neutrons are called ...
A particle that moves around the nucleus is a(n) ...
Elements in groups 3 - 12 are called ...
The ... is used to accelerate protons in the study of subatomic particles.
A certain atom has 26 protons, 26 electrons, and 30 neutrons. Its mass number is ...
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