How many ELECTRONS can the first ring/orbital shell hold?
The first ring/orbital shell can hold a maximum of 2 ELECTRONS
Each time you go down a period, an atom gains a what
Energy level
On a periodic table, what do periods represent
Each period indicates how many rings/shells an atom has.
An atom’s mass number is 210 and its atomic number is 85. How many neutrons does the atom have?
125
Which symbol is capitalized when it comes to elements located on the periodic table?
The first letter of each symbol.
What is the number of Neutrons located in this element? Round if necessary.
12 neutrons.
What is atomic mass
Number of protons and neutrons
How is the table organized?
By the atomic number.
What is an Element?
A substance composed of a single KIND of an atom.
The largest of the 3 main groups is the
metals
Electrons have this charge
negative
What is the name of the 3 main groups?
metals, non-metals, and metalloids
How many elements are located on the Periodic Table?
118 .
What does the decimal number represent?
number of protons + number of neutron
What is a compound?
A substance in which two or more different elements are chemically bonded.
What is the smallest element on the periodic table?
Hydrogen
Protons have this charge
Positive
Why can't you ever trust an atom?
Because they make everything up.... HA HA HA
What has the symbol Ne?
Neon
What is a Mixture?
Two or more substances that are mixed together but are not chemically bonded.
Metals can be malleable. What does this mean?
Can form shapes, easy to bend such as aluminum (Al) frame on the class chairs or aluminum foil, braces
What does the Atomic Number represent?
The number of Electrons and Protons located in a specific element.
Similar Chemical Properties determine which _______ an element is located in.
Group
Which subatomic particle never changes?
protons
Which group has members like Li, Rb, K, and Fr?
Alkali Metals
Which group has elements like Xe, Ar, He, and Rn
Noble Gases, Col. 18
Give examples of metals
Cu, Al
What is the charge of the nucleus?
Positive