
Mastering the Criss-Cross Method for Ionic Formulas
Interactive Video
•
Science
•
6th - 10th Grade
•
Easy
Standards-aligned

Amelia Wright
Used 3+ times
FREE Resource
Standards-aligned
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10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the ionic charge of calcium?
1-
2+
1+
2-
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the correct formula for calcium chloride using the crisscross method?
CaCl2
Ca2Cl
Ca2Cl2
CaCl
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the ionic charge of aluminum?
3+
1+
2+
1-
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the correct formula for aluminum bromide using the crisscross method?
AlBr
AlBr2
AlBr3
Al3Br
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
When reducing subscripts, what is the formula for calcium oxide?
CaO
Ca2O
Ca2O2
CaO2
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the ionic charge of phosphorus in aluminum phosphide?
1+
3-
3+
2-
Tags
NGSS.HS-PS1-1
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the correct formula for aluminum phosphide after reducing subscripts?
AlP3
Al3P
AlP
Al3P3
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