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7th
grade

Science

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3 years

Science

7th

grade

Elements / Compounds & Elements & Mixtures v.2

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1
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9 questions

9 questions

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1. Multiple Choice
45 seconds
1 pt
Which of the following chemical formulas represents a compound?
C₃
N₂
N₂O
H₂
2. Multiple Choice
45 seconds
1 pt
Which of the following is an element?
Sn
Al₂CO₅
C₆H₁₂O₆
SiO₂
3. Multiple Choice
45 seconds
1 pt
How many hydrogen atoms are in the compound C₆H₁₂0₆?
0
6
12
18
4. Multiple Choice
45 seconds
1 pt
How many oxygen atom/s are present in the compound CaCO₃?
1
2
3
4
5. Multiple Choice
30 seconds
1 pt
This image is a model of...
an element
a compound
a mixture
6. Multiple Choice
3 minutes
1 pt
What is the number of protons that the element in this image contain?
23
11
34
unknown
7. Multiple Choice
45 seconds
1 pt
What is the number of neutrons that the element in this image contains?
20
39
19
58
8. Multiple Choice
45 seconds
1 pt
What is the atomic mass of the element in this image?
14
7
21
unknown
9. Multiple Choice
45 seconds
1 pt
The atomic number of an element is determined by the total number of which particles in the nucleus?
Neutrons
Protons
Electrons
Protons and electrons
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