Element, Compound, Equation
Quiz
•
Science
•
8th Grade
•
Easy
Chungten Meto
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12 questions
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1.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Which of the following is an example of an element?
Water (H2O)
Carbon dioxide (CO2)
Oxygen (O2)
Table salt (NaCl)
2.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
What is the chemical formula for table salt?
H2O
CO2
O2
NaCl
3.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Which of the following is a compound?
Iron (Fe)
Hydrogen (H)
Sodium chloride (NaCl)
Helium (He)
4.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
What is the valency of chlorine (Cl)?
1
2
3
4
5.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
What is the valency of oxygen (O)?
1
6
2
3
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the valency of nitrogen (N)?
1
2
3
5
7.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
What is the valency of calcium (Ca)?
2
3
3
1
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