Science Test--- for 10/16/24 Flashcards
1
Q
Ion
A
atom or group of atoms that has an electric charge
2
Q
Polyatomic ion:
A
ions that are made with more than one atom
3
Q
Ionic bond:
A
attraction between two oppositely charged ions
4
Q
Ionic compound:
A
compound that consists of positive and negative ions
5
Q
Chemical formula:
A
Symbols that show the ratio of elements in a compound
6
Q
Subscript
A
the ratio of elements in a compound
7
Q
Crystal
A
3D arrangement
8
Q
Do you know how to identify the valence electrons
A
Valence Electrons = group number (if it’s groups 13-18 you subtract 10)
9
Q
Charge
A
number of electrons that an element wants to give/receive
10
Q
What is group 1s charge
A
+1
11
Q
What is group 2´s charge
A
+2
12
Q
What is group 13´s charge
A
+3
13
Q
What is group 14´s charge
A
+4 or -4
14
Q
What is group 15´s charge
A
-3
15
Q
What is group 16´s charge
A
-2
