
Physical Science Final Exam Review Practice
Quiz
•
Chemistry
•
10th Grade
•
Hard
Frank Savaglio
Used 1+ times
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22 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the atomic number of an element that has 6 protons and 6 neutrons?
18
12
24
6
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the half-life of a substance if 25% of the original sample remains after 20 minutes?
20 minutes
10 minutes
40 minutes
30 minutes
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the electron configuration of carbon?
1s2 2s1 2p3
1s2 2s2 2p2
1s2 2s2 2p3
1s2 2s1 2p2
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How many valence electrons does an atom of chlorine have?
2
10
7
5
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In a nuclear reaction, what is the process called when a heavy nucleus splits into two or more lighter nuclei?
nuclear division
atomic disintegration
nuclear fission
nuclear fusion
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the balanced chemical equation for the reaction between hydrogen and oxygen to form water?
2H2 + O2 -> 2H2O
H2 + O2 -> H2O
2H + O -> H2O
H2O -> 2H2 + O2
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What type of chemical reaction is represented by the following equation: 2H2 + O2 → 2H2O
Single displacement reaction
Combustion reaction
Decomposition reaction
Synthesis reaction
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