Atomic Theory
Atoms
Periodic Table
We're All Family
Atomic Structure
100
Anything that has mass and takes up space
What is matter
100
Positively charged particle in the nucleus of an atom
What is a proton
100
Each row on the periodic table is called a _____.
What is a period.
100
What is the name for Group 1 on the periodic table?
What is the alkali metals
100
Which three characteristics of an atom are the same no matter which atom you look at?
What are the number of protons=# electrons=atomic #
200
Who came up with the term atom?
Who is Democritis
200
What type of charge do neutrons have?
What is neutral
200
Each element in the same period have the same number of __________.
What are electron shells
200
What is the name for groups 3-12 on the periodic table?
What are the transition metals
200
An atom of hydrogen has a mass # of 1 and an atomic number of 1. How many neutrons are there?
What is none
300
Who discovered the electron?
Who is JJ Thomson
300
Define electron.
What is a negatively charged particle around the outside of the nucleus of an atom
300
Element X is in the 4th period on the periodic table. What do we now know about this element?
That it has 4 electron shells
300
Which group consists of soft, white, malleable metals?
What are the alkaline earth metals
300
Element X has a mass # that is 40 and an atomic number that is 20. How many protons, electrons and neutrons does it have?
What is 20,20 and 20
400
Who discovered the neutron?
Who is Chadwick
400
The number of protons is =, <, or > the number of electrons?
What is equal to =
400
Element Y is in the Noble Gases group. What do we know about the number of valence electrons?
That is group 18 so there are 8 valence electrons in that group unless it is Helium which has 2
400
Which group consists of soft, silvery metals that are very reactive with water?
What are the alkali metals
400
Draw the Bohr diagram for silicon.
It should have 3 shells. 2 electrons on the first shell, 8 on the second shell and 4 on the third shell.
500
Who suggested that electrons move in energy levels around the nucleus?
Who is Niels Bohr
500
How do you find the number of neutrons in an atom?
What is by subtracting the atomic number from the mass number.
500
Element Q is in the 3rd period and is in Group 14. What is the atomic number of this element?
What is 14
500
Which group consists of elements that are very reactive with elements of group 1?
What is the Halogen group
500
Draw the Bohr diagram for Sulfur
It has 3 shells. 2 e- on the first shell, 8e- on the second shell and 6e- on the third
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