Language of Chemistry
Authored by Swapna Jena
Chemistry
8th Grade
Used 42+ times
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20 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How many electrons are present in a nitride ion?
6
5
8
10
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the formula of the compound formed between calcium and oxygen?
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which one of the following has 4 electrons in its valence shell?
C
S
P
F
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A molecule of a compound is electrically _____.
neutral
positive
negative
charged
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
When an element exists as a molecule, each unit consists of two or more ____________.
ions
radicals
atoms
elements
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How many valence electrons does silicon have?
14
4
2
28
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The molecular formula for Nitric acid is ____.
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