Atom Basics
The smallest particle of an element
atom
Protons have this charge.
positive +
What is a row of the periodic table called?
a period
What can you predict about an element by its location on the periodic table?
its properties
What does the atomic number represent?
# of protons, also tells you how many electrons.
What is included in the nucleus of an atom?
protons and neutrons
What is the charge of an neutron?
it has no charge
What is a column of the periodic table called?
a group or family
Elements in the same Group of the periodic table have the same number of
(valence) electrons
The nucleus
What particles travel around the nucleus of an atom?
electron
Electrons are located in the electron cloud outside the nucleus. They have this charge.
negative -
How are metalloids different from metals and non-metals?
Metalloids have properties of both metals and non-metals.
My atomic number is 51, what kind of element am I?
Metalloid
What four things are included in an element's square?
atomic number, atomic mass, symbol and element name
Describe the basic structure of an atom.
Dense nucleus of protons and neutrons, electrons orbit in electron cloud surrounding nucleus.
What is the charge of a valence electron?
negative
Which elements are in the same period?
Se and Te
Mn and Fe
K and Ne
H and Ca
Mn and Fe are in same row
How many more neutrons does Sodium (Na) than Helium (He)?
Sodium (Na) = 12 neutrons
Helium (He) = 2 neutrons
12-2= 10 more neutrons
What is the atomic number, atomic mass and symbol for gold?
Atomic # is 79 Atomic mass is 196.967 or 197 Symbol is Au
What other particle of an atom is equal to the number of protons?
electrons
IV= different rocks
How is the periodic table arranged?
by increasing atomic number
Most of the elements on the periodic table are this type.
Metals
What is the atomic mass of an element that has 11 protons, 11 electrons and 12 neutrons?
23 amu