Periodic Trends
Metals on the periodic table are mostly found on this side.
Left side
How many atoms are in NaCl?
2 (Na=1, Cl=1)
This particle has a negative charge.
Electron
An atom or group of atoms with a charge is called this.
Ion
This type of bond forms when atoms share electrons.
Covalent
Elements in the same group have this in common.
Same number of valence electrons
How many oxygen atoms are in H₂O?
1
This part of the atom contains protons and neutrons.
Neucleus
An atom becomes a cation by doing this.
losing electrons
This type of bond forms when electrons are transferred from one atom to another.
Ionic
Where the group of elements in the periodic table which are the second-most reactive is located.
Alkali Earth metals
How many atoms are in CO₂?
3 (C=1,O=2)
The number of these particles determines the element’s identity.
Protons
An ion with more electrons than protons has this type of charge.
Anion
Sodium and chlorine form this type of bond.
Ionic
What do most atoms want to do, and who are they jealous of?
Become stable like a noble gas
How many hydrogen atoms are in C₆H₁₂O₆?
12
Why is an atom neutral?
An atom has the same number of electrons as protons
A chlorine atom that gains 1 electron becomes this ion.
Cl-
Molecules like CO₂ and H₂O contain this type of bond.
Covalent
Atoms become ____________ as you go down a group
larger (larger radius)
How many total atoms are in Ca(OH)₂?
5 (Ca=1,O=2,H=2)
How do you calculate the # of neutrons in an atom?
#neutrons = Atomic mass -# protons
Magnesium forms an ion with a 2+ charge. How many electrons did it lose?
2 electrons
This force of attraction holds ionic compounds together.
Electrostatic attraction