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WorksheetsCriss-cross method
Total questions: 21
Worksheet time: 42mins
Name
Class
Date
1.
A __________ uses chemical symbols to represent the atoms of the elements and their ratios in a chemical compound.
a)
subscript
b)
coefficient
c)
chemical formula
d)
compound
2.
Is Iron (Fe) an element or a compound?
a)
Element
b)
Compound
3.
An attraction that holds oppositely charged ions close together.
a)
Ionic Bond
b)
Covalent Bond
c)
Chemical Bond
d)
Physical Bond
4.
An atom that loses electrons in an ionic bond becomes a ________ charged ion.
a)
Negatively
b)
Positively
5.
An atom that gains an electron in an ionic bond becomes a/an _______________ charged ion.
a)
Negatively
b)
Positively
6.
Ba +3 and Cl-
a)
Ba3Cl
b)
Ba3Cl3
c)
BaCl3
d)
BaCl
7.
Fe +3 and S -2
a)
Fe3S2
b)
FeS
c)
S3Fe2
d)
Fe2S3
8.
Ag + and Br -
a)
AgBr
b)
BrAg
c)
Ag2Br2
d)
Br2Ag2
9.
Ag + and Br -
a)
AgBr
b)
BrAg
c)
Ag2Br2
d)
Br2Ag2
10.
How do the following two elements bond together?
Calcium and Oxygen
Calcium and Oxygen
a)
CaO
b)
Ca3O2
c)
Ca2O3
d)
CaO2
11.
How do the following two elements bond together?
Sodium and Fluorine
a)
NaF
b)
NaF3
c)
Na3F
d)
Na1F2
12.
How do the following two elements bond together?
Potassium and Sulfur
Potassium and Sulfur
a)
KS
b)
K8S
c)
K6S3
d)
K2S
13.
How do the following two elements bond together? Aluminum and Oxygen
a)
AlO
b)
Al2O3
c)
Al3O6
d)
Al3O2
14.
Which of the following is NOT an ionic compound:
a)
CaO
b)
NaOH
c)
BaCl2
d)
Br2
15.
Magnesium bromide is an ionic compound with the chemical formula MgBr₂. What does the "2" tell you?
a)
There are 2 bromide ions for every magnesium ion
b)
Bromide has a 2- charge
c)
Bromide has a 2+ charge
d)
There are 2 magnesium ions to every bromide ion
16.
What is the formula of Sodium oxide?
a)
Na2O
b)
NaO2
c)
Na2O2
d)
Na2O
17.
What is the formula of calcium oxide?
a)
CaO2
b)
CaO
c)
Ca2O
d)
CO
18.
What is the formula for magnesium phosphide?
a)
Mg3P2
b)
Mg2P3
c)
Mg2(PO4)3
d)
Mg3(PO4)2
19.
Na + and S -2
a)
Na2S
b)
NaS2
c)
Na2S2
d)
NaS
20.
Which of these combinations is an ionic compound made of?
a)
Metal and Metal
b)
Nonmetal and Nonmetal
c)
Metal and Nonmetal
d)
Cation and Cation
21.
Ionic bonds form between two ions that have
a)
ionic compounds
b)
negative charges
c)
positive charges
d)
opposite charges
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