Metals are this quality, meaning that they can be made into wires.
What is ductile
100
The atomic symbol for Aluminum with have a capital A followed by this.
What is a lowercase l.
100
This Russian chemist was the first to organize elements based on their properties.
Who is Dmitri Mendeleev?
100
Palladium (Pd) has an atomic number of 46 and a average mass of 106.42, which means Palladium has this many protons.
What is 46?
100
The vertical columns of elements are called this term.
What are groups or families.
200
Nonmetals can be found on this side of the zig-zag line on the periodic table.
What is the right.
200
The atomic number (number of protons) of an element can be found in this location in an element's square.
What is the top.
200
Mendeleev arranged elements in this order.
What is increasing atomic mass?
200
This is the chemical symbol for Calcium.
What is Ca?
200
The horizontal rows of elements on the periodic table are called this term.
What are periods?
300
This is a characteristic of metals that allows them to be formed into different shapes.
What is malleable?
300
The average atomic mass of an element is found at the bottom of an element's square. The average mass is taken due to an element having this term for varying number of neutrons.
What is isotope?
300
In the early 1900s, this British scientist rearranged Mendeleev's periodic table.
Who is Henry Moseley?
300
Elements in this category are often solid (besides Mercury) at room temperature.
What are metals?
300
Elements in the same group or family have similar physical and chemical properties due to them having the same number of this.
What are valence electrons.
400
Due to their having properties of both metals and nonmetals, elements of this category are used to make semiconductor chips in computers.
What is metalloid?
400
An elements with 12 protons, 12 electrons, and 12 neutrons will have an atomic mass of this number.
What is 24?
400
Moseley arranged the periodic table based on this property.
What is increasing atomic number (# of protons)
400
These are the subatomic particles found on the outermost energy shell of an element.
What are valence electrons?
400
Elements follow a predictable density pattern as you go from left to right within a period. Elements found in this position of the period are the most dense.
What is the middle?
500
Elements in this category are often dull and brittle.
What is nonmetals.
500
This is the unit for atomic mass.
What is u.
500
The periodic table today is organized by this.
What is atomic number?
500
These gases have 8 valence electrons and therefore are nonreactive.
What are the noble gases?
500
Sodium (Na) and Potassium (K) react very similarly with water. Both sodium and potassium have one valence electron, meaning they are arranged in this same part of the periodic table.