Atoms
What is an atom?
Atoms are the smallest individual units that have properties of an element.
What is used to organize the elements?
The periodic table of the elements.
What is a chemical bond?
The attraction between two or more atoms.
What is polarity?
When an entity contains two distinct and opposite poles that can either attract or repel each other.
What tells you the number of protons and electrons?
Atomic number.
What do atoms do?
Atoms are the building blocks of all matter.
What is an element?
An element is a chemical substance that cannot be broken down into other substances.
What particle is formed when two atoms share electrons?
A molecule.
What is it called when a molecule has no positive or negative poles?
Non-polar.
What are valence electrons?
The number of electron on the outer shell that tell us how reactive an element is.
What are the three subatomic particles in atoms?
Protons, neutrons, and electrons.
Which element has the atomic symbol of He?
Helium.
What type of bond joins atoms through electron sharing?
Covalent bond.
What is electronegativity?
The tendency of an atom or a functional group to attract electrons toward itself.
How many electrons are in the lowest energy level?
2 electrons.
What is the charge of a proton?
Positive.
What is a chemical substance made up of two or more elements?
A compound.
What type of bond joins atoms through electron donations?
Ionic bond.
Which element is the most electronegative?
Fluorine.
What is the atomic mass of carbon?
6.
What properties of the atom do neutrons determine?
The isotope.
What are the four most important elements?
Oxygen, carbon, hydrogen, and nitrogen.
What is a double bond?
When an atom shares two electrons with another atom.
What are the two things that determine the polarity of a molecule?
Its molecular shape and electronegativity.
Which group has a full outer shell?
Noble gases.