Atoms
All neutrons are a. positive b. negative c. neutral
What is "c. neutral"
What is a trick to know how many energy levels an atom has?
Count the periods (horizontal rows)
Most atoms have a ________ charge. a. positive b. negative c. no
What is "c. no charge"
Most atoms have the same number of positive protons and negative electrons.
One property of metals is that they are able to bend without breaking. This property is called __________
What is "malleable" or "malleability"
On a periodic table there are ____ many groups
What is "18 groups"
True or False: Metals are good conductors of electricity, malleable, and ductile.
True
ductile- capable of being hammered out to thin wire
The sum of the protons and neutrons in an atom's nucleus is its _______________.
What is "atomic mass"
On a periodic table the atomic number determines how many _______ are in the nucleus of the atom.
protons
The very first periodic table was created by: a. Albert Einstein b. Dmitri Mendeleev c. Henry Mosley d. Merry Street
Who is "Dmitri Mendeleev"
What is the name of the atomic model the places the electrons in shells/energy levels?
Bohr Model
What is the charge of a neutron?
What is "no charge" or "neutral"
The greatest number of electrons an atom can hold in its second energy level is ______________
What is "8"
On a periodic table, the horizontal row of elements is called __________
What is "the periods"
Elements that have properties of both metals and nonmetals are known as ______________.
What are "Metalloids"
What‘s the name of the atomic model that focuses only on the valence/outer electrons?
Lewis Structure
What is the electric charge of an electron?
negative charge
True or False: Elements are grouped vertically by characteristics and horizontally by increasing protons.
What is "True"
How many electrons can the 1st energy level of an atom hold?
What are "two" electrons
On the Periodic table, most of the elements are metal, metalloids, liquids, gasses, or nonmetals?
What are "metals"
Elements in the same vertical column (group / family) have __________
What is "similar” characteristics.
What subatomic particles make up the nucleus of an atom?
What are Neutrons and Protons
The Elements found in a PERIOD: a: have the same properties b. do not have similar properties c. belong to the same familiy. d. Increase by atomic number.
D. Increase by atomic number.
Elements that are good insulators, dull, and brittle are known as ______________
What are "nonmetals"