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Atoms
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100
the center of an atom
What is the nucleus?
100
H is the chemical symbol for this element...
What is hydrogen?
100
elements are organized by this
What is atomic number?
100
the property that describes how a metal can be pulled or drawn into a wire
What is ductile?
100
the smallest particle of an element
What is an atom?
200
particle with a charge of +1
What is a proton
200
The symbol for nitrogen
What is N?
200
horizontal rows of elements
What is a period?
200
the ability to transfer heat or electricity to another object
What is conductivity?
200
H2O is a ...
What is a compound?
300
a particle located in the nucleus with a neutral charge
What is a neutron?
300
the symbol for helium
What is He?
300
18 vertical columns of elements
What is a group or family?
300
the ease and speed with which an element combines with other elements and compounds
What is reactivity?
300
the chemical symbol for carbon
What is C?
400
a negatively charged particle
What is an electron?
400
this property of metals led to the use of plastic or wood handles on many cooking utensils
What is conductivity?
400
all elements are either metals, nonmetals, or ...
What are metalloids?
400
the destruction of metal
What is corrosion?
400
the sum of protons and neutrons in an atom's nucleus
What is mass number?
500
the unique number of protons in an element's nucleus
What is atomic number?
500
the metals in group one are called
What are alkali metals?
500
lacks most of ther properties of a metal
What is a nonmetal?
500
the ability to be hammered or rolled into flat sheets and other shapes
What is malleable?
500
atoms with the same number of protons and a different number of neutrons
What is an isotope?