This is the number of protons in an atom of Sodium whose atomic number is 11 and atomic mass is 23.
What is 11?
100
This is a substance made of one type of atom.
What is an element.
100
This is about how many known elements there are.
What is 100?
200
This is the formula you use to find the volume of a rectangular box
What is length x width x height
200
These are the 2 types of subatomic particles that are located in the nucleus and compose a majority of an atom's mass
What are the protons and the neutrons?
200
This is the number of neutrons in an atom with an atomic mass of 12 and an atomic number of 5.
What is 7?
200
This forms when two or more elements chemically combine and form a substance that has properties different than those of the original substances
What is a compound?
200
These elements are malleable, have high melting points, are good conductors of heat and electricity and are usually solid at room temperature
What are metals?
300
This is the formula for calculating the density of an object
What is mass divided by volume
300
This is the location and charge of an electron.
What is in the outer shells (orbits) and negative charge.
300
This is a horizontal row on the table that tells you the number of electron shells an atom has
What is a period?
300
This is the strongest force we know of an holds the nucleus of an atom together.
What is nuclear force?
300
This is the group of elements on the periodic table that are poor conductors of heat and electricity, are often gases at room temperature and as solids tend to be dull and brittle.
What are nonmetals?
400
This is what is measured by a scale that tells how hard gravity is pushing or pulling on an object.
What is weight?
400
This is another name for the electrons in the outer most shell of an atom.
What are valence electrons?
400
This is a vertical column that helps you identify the number of valence electrons an atom has.
What is a group or family
400
This is how compounds can be separated.
What is by chemically breaking the bonds between the atoms.
400
This is what happens to the number of valence electrons as you go from the top to bottom down any group in the periodic table.
What is "they stay the same"
500
This is the density of an object that has a mass of 400 g and a volume of 8 mL
What is 50 g/cm3
500
This is the force that causes the electrons to be attracted to the protons in the nucleus
What is electromagnetic force?
500
This is how elements in the periodic table are arranged
What is by atomic number?
500
This is formed when two or more substances physically combine but keep their original properties
What is a mixture?
500
This is the group of elements on the periodic table on the far right hand side that are almost completely non-reactive.