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20 questions
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- 1. Multiple Choice
How many carbon atoms are there in this molecule?
6
12
18
24
- 2. Multiple Choice
How many hydrogen atoms are there in this molecule?
6
12
18
24
- 3. Multiple Choice
How many oxygen atoms are there in this molecule?
6
12
18
24
- 4. Multiple Choice
What is the chemical formula for this molecule?
- 5. Multiple Choice
Which model shows a balanced equation?
a.
b.
c.
d.
- 6. Multiple Choice
water
Si
- 7. Multiple Choice
water
- 8. Multiple Choice
oxygen
- 9. Multiple Choice
water
- 10. Multiple Choice
How many Hydrogen atoms are in NaCHCO3
1
2
3
4
- 11. Multiple Choice
1
2
3
4
- 12. Multiple Choice
1
2
3
4
- 13. Multiple Choice
1
2
3
4
- 14. Multiple Choice
1
2
3
4
- 15. Multiple Choice
2
3
5
6
- 16. Multiple Choice
1
2
3
6
- 17. Multiple Choice
8
6
4
2
- 18. Multiple Choice
8
6
4
2
- 19. Multiple Choice
- 20. Multiple Choice
Which of the following is the best evidence for a chemical reaction?
gas bubbles
change in temperature
change in state
formation of a new substance
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