
8th grade Unit 2
Quiz
•
Science
•
8th Grade
•
Hard
S wagner
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17 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
According to the Chemical Compounds table above, how many atoms of hydrogen are in Ethanol?
0
2
5
6
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
According to the Chemical Compounds table above, how many total atoms are in Glucose?
3
18
24
432
3.
OPEN ENDED QUESTION
30 sec • Ungraded
Refer to the Chemical Compounds table above. How many total elements are in Ethanol? Record your answer. Be sure to use the correct place value
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4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The above diagram is a model of a molecule of methane. What is the formula for methane?
CH8
C8H4
CH4
C8H8
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
2Mg + O2 2MgO
In the equation above, how many atoms are in the oxygen molecule?
2
0
1
3
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The formula below represents the most common carbohydrate known as glucose. It is classified as a monosaccharide. Glucose is synthesized by chlorophyll in plants as they use carbon dioxide from the air and sunlight as an energy source during the process of photosynthesis.
C6H12O6
Which information can be determined from the chemical formula?
The structural arrangement of the atoms in a glucose molecule
The color of a glucose molecule
The size of a glucose molecule
The number of atoms of each element in a glucose molecule
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the above statements is true?
I and II
III and IV
I and III
II and III
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