Who's Your Family?!
Phosphorous
Nitrogen Family
This element in actinides is MAINLY used to support the formation of radioactive and nuclear weapons and is represents by element # 89.
Actium
in 1897, this young man discover that atoms contain negatively charged particles
JJ Thomson
What is the atomic number of hydrogen?
1
Sulfur
Oxygen Family
Lithium
Alkali Metal
This element is MAINLY used to support other metals in formation of alloys and is # 57 on the periodic table.
Lutetium
This man recognized that like charges repel each other and that an atoms positive charge must be packed within a region of the atom know as the nucleus
Ernest Rutherford
Which of the following combinations is correct?
1. N Neon
2. Fe Iron
3. Au Gold
2 & 3
Astatine
Halogen Family
Copper
Transition Metal
This element is MAINLY used to support the formation of laser beams and laser lights within lanthanides and is.....
Neodymium
According to Bohr, an electron's movement within an atom is related to its _________________
energy level
This is always considered an average because most elements consist of a mixture of isotopes
atomic mass
Argon
Noble Gas Family
Selenium
Oxygen Family
Lanthanides can be found on the periodic table between numbers _____ and ________
57 and 71
This man, after our main theorists, discovered that another particle exists in the nucleus of the atom called a neutron.
James Chadwick
This will always represent the number of protons and electrons in an element.
Atomic Number
What groups are nonmetal elements found in?
Group 1 and Groups 14-18
Magnesium
Alkali Earth Metals
Actinides on the periodic table can be found between numbers _____ and ______
89 and 103
Democratis lived from _________ to ____________
460 BC to 370 BC
If calcium's atomic weight is 40.08 and its atomic number is 20. How many neutrons does it have?
20
Helium
Noble Gas family