Counting Atoms | Science Quiz

Counting Atoms

8th grade

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15 QuestionsShow answers

Question 1
SURVEY
300 seconds
Q.
What does the subscript in a chemical formula tell you?
answer choices
How many molecules are present
How many atoms are present
How many elements are present
How many neutrons are present
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Question 2
SURVEY
300 seconds
Q.
How many elements are in this chemical formula?
HCl
answer choices
1
2
3
4
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Question 3
SURVEY
300 seconds
Q.
How many atoms of Carbon are in this formula? $C_{6\ }H_{12}O_6$
answer choices
6
1
12
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Question 4
SURVEY
300 seconds
Q.
What elements are represented in this chemical formula? $Fe_2O_3$
answer choices
Iron, Oxygen
Francium, Europium, Oxygen
Ferrium, Oxygen
Berylium, Oxygen
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Question 5
SURVEY
300 seconds
Q.
What is the total number of atoms in this formula? $H_2O_2$
answer choices
2
4
3
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Question 6
SURVEY
300 seconds
Q.
How many more atoms of Oxygen than than Magnesium are in this formula? $MgSO_4$
answer choices
4
3
2
6
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Question 7
SURVEY
300 seconds
Q.
Which of the following elements is least likely to form a compound?
answer choices
Hydrogen
Sodium
Argon
Potassium
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Question 8
SURVEY
300 seconds
Q.
Which of the following is a molecule of a compound?
answer choices
$H_2$
$Cl_2$
$H_2O$
$F_2$
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Question 9
SURVEY
300 seconds
Q.
Which does not belong in the group?
answer choices
Sodium
Glucose
carbon
Element
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Question 10
SURVEY
300 seconds
Q.
Is this an element or a compound? $CaSO_4$
answer choices
Element
Compound
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Question 11
SURVEY
300 seconds
Q.
Which chemical formula correctly displays 1 atom of nickel and 2 atoms of Fluorine?
answer choices
niF2
NIF₂
Ni₁F₂
NiF₂
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Question 12
SURVEY
300 seconds
Q.
What is the total number of atoms in this chemical formula? $C_8H_3NaBr_{12}$
answer choices
18
12
25
24
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Question 13
SURVEY
300 seconds
Q.
Which element has the greatest number of atoms? $AgNO_3$
answer choices
Silver
Gold
Nitrogen
Oxygen
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Question 14
SURVEY
300 seconds
Q.
Molecules that are made of more than one type of atom are called?
answer choices
Molecules
Elements
Mixtures
Compounds
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Question 15
SURVEY
300 seconds
Q.
How many elements are in this chemical formula? $NaHCO_3$
answer choices
1
2
3
4
Tags: