Atomic Structure
All ____________ are made up of two or more atoms bonded together.
molecules
An atom becomes _________ when it gains electrons.
Negative
What is the atomic mass of an atom of rubidium, and how many neutrons does each rubidium atom have?
Rubidium has 49 neutrons, and the atomic mass is 85.5
A tiny but very dense, positively charged portion of the atom that holds most of the atomic mass
Nucleus
How many neutrons does B (Boron) contain?
6
What is the atomic number of fluorine (F)?
9
What is one way Neutrons are different from electrons?
neutrons have no charge, while electrons have a negative charge
The negatively charged subatomic particles that are located in energy levels around the nucleus
Electrons
Which element from period 4 has the highest atomic mass, and which element from group 17 has the lowest atomic number?
Highest atomic mass-Kr (Krypton)
Value representing the number of protons in an element
Atomic Number
Loss or gaining of an electron changes and atom into __________.
ions
How many neutrons does each boron atom contain, and what is Boron’s atomic number?
Boron has 6 neutrons, and the atomic number is 5.
A substance that cannot be broken down into other substances by chemical or physical means.
Element
Think fast! An element has 25 protons and 22 electrons. It has a charge of...
3+
How many total protons does each nickel atom contain, and what is the atomic mass of Cobalt?
Nickel has 28 protons, and the atomic mass of Cobalt is 58.9.