The Atom
This is a measure of the amount of matter in an object.
mass
What type of charge do protons have?
positive
What is the formula for calculating the mass number of an atom?
protons + neutrons
What is the center of the atom called?
nucleus
What is the most simple/basic element?
hydrogen
This is a measure of how much space an object occupies.
volume
What type of charge do electrons have?
negative
What is the mass number of an atom that has 8 neutrons and 7 protons?
15
This is a pure substance made up of only one type of atom.
element
What is the chart/diagram that has all of the chemical elements on it called?
periodic table of elements
This is the most basic/smallest unit of any element.
atom
What is the formula for figuring out the electric charge of an atom?
protons-electrons
How many neutrons does an atom with a mass number of 10 have if it has an atomic number of 6?
4
matter or atoms
This is the number of protons in the nucleus of an atom.
What is the name of the region of an atom that protons and neutrons occupy?
nucleus
An atom has 7 protons and 8 electrons. What is its electric charge?
-1
What is the atomic number of an atom that has 10 neutrons and a mass number of 18?
8
This measures the number of protons and neutrons in the nucleus of an atom.
mass number
These are atoms of the same element that have different numbers of neutrons in their nuclei
isotopes
Where are the electrons at in an atom?
the outside or electron cloud
An atom has 7 protons and 0 electrons. What is its electric charge?
7
Carbon has an average atomic mass of 12.011. What is probably the mass number of the most abundant isotope?
12
This is a charged atom.
ion
This is the weighted average of the mass numbers of an atom's isotopes based on their abundance in nature.
average atomic mass