Atoms
All neutrons are
neutral"
What is a trick to know how many energy levels an atom has?
Count the periods (horizontal rows)
What is the electrical charge of the nucleus.
positive (however many protons)
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"
All protons are _____________
"positively charged particles"
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"
What makes an atom stable
full shells (8 electrons)
Atoms of the same element with different numbers of neutrons are knowns as
What is "isotopes"?
What are the 3 subatomic particles and their charges
proton (+), Neutron (o) and Electrons (-)
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"
18 (35-17)
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"
Which group is the most reactive and what does that mean?
Group 1 because its unstable and reacts easily (Example fire)
On the Periodic table, most of the elements are metal, metalloids, liquids, gasses, or nonmetals?
What are "metals"
What determines the atomic number of an element?
protons in the nucleus of an atom
Elements in the same vertical column (group / family) have __________
What is "similar” characteristics.
Where can we find how many valence electrons an atom has?
The Elements found in a PERIOD increase by what?
D. Increase by atomic number.
Elements that are good insulators, dull, and brittle are known as ______________
What are "nonmetals"