Periodic Table
What number tells you the number of protons and electrons?
atomic number
What particle has a positive charge?
Proton
What is the name of element number 1?
Hydrogen
Group number is a reflection of the number of ______
valence electrons
How do you figure out the number of neutrons?
atomic mass - atomic number/ protons/ electrons
What particle has no charge and what particle has a negative charge?
-Neutron
- Electron
What is neon used for?
advertising signs
Period number is a reflection of the number of______
shells
How do you find an element's atomic mass?
no. of neutrons + no. of protons/ atomic number/ electrons
Valence electrons can be _____, ______ or_____
gained, lost or shared
What are the names of the elements with the elemental symbols P and S?
P-->Phosphorus
S-->Sulfur
What separates metals from non-metals on the periodic table?
zig-zag line (metalloids)
What does the term 'valence electrons' mean?
number of electrons on the outermost shell
What are the names of groups 0, 1 and 7?
0-->noble gases
1-->alkali metals
7-->halogens
What is the atomic mass of an element with protons = 8 and neutrons = 8
- atomic mass = protons + neutrons = 8 + 8 = 16
Elements in the same _____ have similar ______ and _____ in the same way
-group
-properties
-react
What are elements arranged according to?
in order of increasing atomic number
The periodic table is divided into __ groups and 7 _____
18 groups (vertical)
7 periods (horizontal)
What is the neutrons of an element with atomic mass = 24 and electrons = 12?
-neutrons = atomic mass - electrons (originally atomic number) = 24 - 12 = 12
State 2 examples of:
- metals
- non-metals
- metals: iron/copper/gold/aluminum/silver/lithuim
- non-metals: sulfur/carbon/phosphorus/nitrogen/hydrogen/iodine/bromine/boron