Atoms
Which group on the periodic table is most stable (least reactive)?
What is group 18 (the Noble Gases)?
What can we look at on a Periodic Table to determine the number of energy levels/shells an atom has
What are periods?
Most atoms have a ________ charge. a. positive b. negative c. neutral
What is "c. neutral/no charge"?
Most atoms have the same number of protons and electrons
One property of metals is that they are able to bend without breaking and be hammered into flat sheets. This property is called __________
What is malleable or malleability?
On the periodic table there are ____ groups (how many)
What is 18 groups?
When finding an element's mass, what do you add together?
What are the protons and neutrons?
True or False: Metals are good conductors of electricity, malleable, and ductile.
What is true?
How do we find the number of neutrons in an atom?
Mass - Atomic # = Number of Neutrons (MAN)
On a periodic table, the atomic number always determines how many _______ are in the nucleus of the atom.
What are protons?
What do we call electrons in the outer energy shell?
What are valence eletrons?
What is the name of the atomic model the places the electrons in shells/energy levels?
What is a Bohr Model?
Which category on the periodic table are semi-conductors and useful in electronics?
What are metalloids?
The greatest number of electrons an atom can hold in its second energy level is ______________
What is 8?
On a periodic table, the horizontal rows of elements are called __________
What are periods?
Elements that have properties of both metals and nonmetals are known as ______________.
What are metalloids?
What is the goal of every atom?
What is to fill all of their electron shells (become stable/inert)?
What are the charges of each subatomic partcle?
Neutrons=Neutral/No Charge
Electrons= Negative
True or False: Elements have more in common with their period than their group.
What is false?
How many electrons can the 1st energy level of an atom hold?
What are 2 electrons?
On the Periodic table, most of the elements are metals, metalloids, liquids, gases, or nonmetals?
What are metals?
Determines the atomic number of an element?
a. the mass of the atom b. electrons in the atom c. neutrons in the atom d. protons in the nucleus of an atom
What is "d. protons in the nucleus of an atom"?
Elements in the same vertical column (group / family) have the same number of _________ _________
What are valence electrons?
Subatomic particles that make up the nucleus of an atom
What are Neutrons and Protons?
Which category on the periodic table has low density and a low melting point?
What are non-metals?
If an atom is electrically neutral, it means it has the same number of ________ and ________
What are protons and electrons?