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100
What does a chemical symbol mean
What is a shorthand way of writing and element.
100
What is a quark?
What is they are very small particles of matter that make up protons and neutrons.
100
What four pieces of information are listed for each element on the periodic table.
What is Element name, atomic number, chemical symbol, atomic mass.
100
What are metalloids?
What is elements having properties of both metals and nonmetals.
100
How many electrons can be in the second energy level
What is 8
200
What's in the center of an atom?
What is nucleus.
200
What is the mass number?
What is the sum of the numbered protons and neutrons in the atom's nucleus.
200
What are the vertical columns on the periodic table called?
What is groups
200
Name 4 elements we studied
What is answers may vary
200
How many scientists did it take to find the sixth quark
What is 450 scientists
300
Define an atomic number
What is the number of protons in the nucleus of an atom
300
Name 2 metalloids
What is boron, silicon, germanium, arsenic, antimony, tellurium, polonium, and astatine
300
What is dot diagram?
What is it uses the symbol of an element and dots to represent the electrons in the energy level.
300
What is the atomic number for the element cadmium and the chemical symbol
What is Cd 48
300
What is the atomic number for Tellurium
What is 52
400
What is an electron cloud
What is a region where electrons most probably are found surrounding the nucleus of an atom.
400
What are atoms of the same element that have different number of neutrons?
What is isotopes
400
What are the horizontal rows of elements in the periodic table are?
What is periods
400
How many electrons can be in the first energy level
What is 2
400
What is the chemical symbol for the element Lead
What is Pb
500
What are the two major kinds of particles in the nucleus
What is protons and neutrons
500
What is the average atomic mass?
What is the average mixture of isotopes
500
What are metals?
What is elements that usually have these common properties:shiny, good conductors of heat and electricity, are solids at room temperature.
500
What element's chemical symbol is Xe and its atomic number is 54
What is Xenon
500
How many electrons can be in the third energy level
What is 18