PARTS OF THE ATOM
What is the center of the atom?
Nucleus
what do the columns represent? what do the rows represent?
Columns: groups
Rows: periods
Where is the atomic mass located on an element box?
Below the element name or on the bottom of the box.
Is this balanced?
H20+02--->H202
no
Which subatomic particle has a negative charged?
Electron
What are the three subatomic particles in an atom called?
Proton, Neutron, Electron
What are the 3 different categories in the periodic table?
Metals, Metalloid, Non-Metals
TRUE OR FALSE: The atomic number is the number in the top right hand corner of the element box.
True!
what makes an equation balanced?
there is an equal number of each element on each side
what is the only non metal on the metal side?
hydrogen
Who was the very first person to develop the idea of an atom?
Democritus
TRUE or FALSE: non metals are on the red staircase
FALSE
metalloids are on it
What does the chemical symbol represent?
It represents the element that is being shown in a abbreviated form.
What is a subscript?
a small number behind an element that tells the number of that element ONLY
What does the atomic number indicate?
The amount of protons in the nucleus