Periodic Table
Periodic Trends
Groups and Properties
Element Identification 2
Electrons
100
What number tells you the number of protons and electrons?
Atomic Number
100

What subatomic particle is not inside the nucleus?

Electrons

100

Group 1 has ________ valence electrons and is also know as __________ __________. 

One, Alkali Metals
100
What element has the symbol Xe?
Xenon
100

The electrons in the outermost sehll

Valence Electrons

200
How do you figure out the number of neutrons?
Subtract the atomic number from the atomic mass
200
What particle has a positive charge?
Proton
200
These are up and down columns on the periodic table and have the same properties. 

Group 

200
What element has 17 electrons?
Chlorine
200

Where are the electrons located? 

electron cloud

300
How do you find an element's atomic mass?
Add the number of neutrons and the number of protons together
300
What particle has no charge?
Neutron
300

These are the rows in there periodic table. 

Period

300
What element's symbol is K?
Potassium
300

What is the mass and charge of the electron? 

1/1870 amu and negative

400
How many liquids are on the periodic table?
2
400
What particle has a negative charge?
Electron
400

This group has a full outermost shell with 8 valence electrons. 

Noble Gases

400
What element is a gas with 22 neutrons?
Argon
400

Valence electrons are responsible for weather atoms become positive or negative ions. Explain why group 16 will form negative ions and group 2 will form positive ions. 

Group 16 has 6 valence electrons therefor it will gain 2 electrons and become negative ion. Group 2 has 2 valence electrons therefore it will lose 2 electrons and become a positive ion. 

500
What does the term 'valence electrons' mean? (2 things)
number of electrons on outermost shell, tells how reactive an element is
500

The number of Valence electrons correspond to the : 

a. group number

b. atomic number

c. period number

a. group number
500

Why does every group want to be like the noble gases? 

They want to complete their outermost shell and become chemically stable like the noble gases. 

500
What element is a sold named after a state with 253 neutrons?
Californium
500
What is an electron cloud model?
The electrons around the nucleus spinning so fast it looks like a cloud
M
e
n
u