Protons
Does a proton have a negative, positive, or zero charge
Positive
Does a Neutron have a positive, negative, or zero charge.
Negative
What is known as the basic building block of all matter
The atom
The symbol Au stands for _____
Gold
Does a electron have a positive, negative, or zero charge.
Negative
The nucleus
Along with protons, neutrons make up almost all of an atom’s total _____
Mass
What are the three main parts that make up an atom
Protons, neutrons, and electrons
What does the number in above the symbol mean
The atomic number
Where are the electrons located inside an atom
Orbiting outside the nucleus
The number of protons in an atom determines its identity and is known as…
Atomic number
Atoms of the element that have different numbers of neutrons are called ______
Isotopes
What is the extremely dense, center core of an atom called
The nucleus
What is the lightest element in the periodic table.
Hydrogen
What special name is given to the electrons located in the outermost shell
Valence electrons
True or false: If you change he number of protons in an atom, you change it into a completely different element.
True
To find the number of neutrons in an atom, you subtract the atomic number from the _____ number
Mass(or atomic mass)
True or false: Most of the volume of an atom consists of completely empty space
True
What is the common element on earth besides oxygen
Iron or Silicon
If a neutral atom loses an electron, what type of net charge does it acquire
A positive charge
Which scientist is credited with discovering the proton.
Ernest Rutherford.
Which element is unique because is most common form contains absolute zero neutrons.
Hydrogen
Which Greek philosopher thought and made the “atoms”
Democritus
How many know elements are there in the periodic table
118
What is the maximum number of electrons that can fit into the very first (innermost) electron shell
2