Ions & Isotopes
Isotopes have a different number of __________.
Neutrons
Shiny, ductile, malleable, and hard. What am I?
a metal
The elements on the periodic table are arranged in order of increasing _______ _________.
atomic number
How many proton dots will a bohr model have inside the nucleus if it represents Sodium?
1
How many protons does oxygen have?
8
Elements in the same group form the same ________
Ions
Dull, nonconductor, and brittle. What am I?
a nonmetal
Identify groups and periods by orientation (which is vertical columns and which is horizontal rows)?
groups - vertical groups
periods - horizontal rows
How many electron dots will a bohr model have in the electron cloud if it represents Beryllium?
2
What is the mass number of oxygen?
15.999 or 16.00 amu
An atom gains an electron, the ion formed will be ______
negative
I have properties of both metals and nonmetals. What am I?
a metalloid
Which side of the periodic table are metals on? Left or right?
left
*hint: think electrons and ions
gain, share, or lose electrons
What is the atomic symbol for Potassium?
K
Cations are _________ ions
positive
How many valence electrons does Helium (He) have?
*hint: group 18
2
Elements in the same group share similar __________ and the same number of __________ __________.
Properties & Valence electrons
What two subatomic particles are in the nucleus?
protons and neutrons
The isotopes boron-10 and boron-11 have differing numbers of _________
neutrons
Al forms a ______ ion
+3
Which two elements on the periodic table are liquid at room temperature?
Mercury (Hg) and Bromine (Br)
The atomic number is equal to the number of ________.
protons
What is the overall charge of the nucleus?
positive
What is the name of chemical symbol Kr?
Krypton