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Grade8 PeriodicTable

understanding the format of the groups and periods

How many groups are there? 18
What is a group or family of elements? a column
What is a period of elements? a row
How many periods are there? 7
Does the atomic number(number at top) show the number of protons in the element? yes
If an element has 7 protons, how many electrons does it have? 7
The atomic mass is the number shown below the chemical symbol and name. Is it the total of protons and neutrons? yes
an electron in the outermost energy level of and atom is a valence electron
Can you use the periodic table to find the number of valence electrons? yes
Look at a periodic table and determine the number of valence electrons in the element Oxygen. 6
How many neutrons does Oxygen have? 8
How many electrons does Sodium have? 11
How many protons does Sodium have? 11
What does Periodic Law state? That repeating chemical and physical properties of elements change periodically with the elements' atomic numbers.
Name the particles that form together to make protons and neutrons. quarks
Name the "glue" that binds the quarks together. gluons
Created by: ahsimmon