9th
grade

Science

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1. Multiple Choice
30 seconds
1 pt
Identify the Symbol of Calcium
Na
Mg
Ca
Cl
2. Fill in the Blank
1 minute
1 pt
The Number of atoms in a molecule or compound defines its__________.
3. Fill in the Blank
1 minute
1 pt
Find the Mass of 3 moles of NaCl.
4. Multiple Choice
30 seconds
1 pt
Identify Nitrogen gas
N
NO
N₂
2N
5. Multiple Choice
30 seconds
1 pt
The atomicity of K₂Cr₂O₇ is:
9
11
10
12
6. Multiple Choice
30 seconds
1 pt
In ammonia NH_{3, Nitrogen and Hydrogen are in the ratio_____by mass.}
14:5
14:3
14:8
14:2
7. Multiple Choice
30 seconds
1 pt
This is a dalton's symbol of which element?
Carbon
Sulphur
Gold
Magnesium
8. Fill in the Blank
1 minute
1 pt
Full form of IUPAC is
9. Multiple Choice
30 seconds
1 pt
amu is the abbrevation unit of?
Mole
Volume
Mass
No. of particles
10. Multiple Choice
30 seconds
1 pt
The group of two or more elements is called__________.
Atom
Molecule
Complex
None of the above
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Answer choices
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