Name:___________________________ Date:_____________________

D

S T

1. Circle the product……. He2OKA3 Fe4H5

2. Where do you find the subscript and what does it tell you?

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3. Where do you put the coefficient when writing a formula?

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4. When counting atoms what operation do you perform to get your total? ___________________________________________________________________________________________________

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5. Where is the valance electron found? ________________________________________________

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6. What are the three subatomic particles?____________________________________________

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7. What is the building block of matter? ________________________________________________

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8. Which of the following are written correctly? EH, eH, HH, He, EE

9. What would the coefficient be if I had 27 atoms of Helium and 18 atoms of Lithium? ________________________________________________________________________________

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10-15 complete the chart

Fourmula # of atoms # of atoms # of atoms# of atoms

Total # of atoms

10 4HFe2Ka5

11 4AgI2S3

12 Ga 4 I 6 He 8

13 Xe 3 Ar 12 y 15

14 5V3Te6Ag5K3

15 O 7 N 14 B 21

You must show your work in order to receive credit.

16. Speed = 45 yards per hour

Distance = 527 yards

17. Distance = 5,243 inches

Time = 2 hours and 20 minutes

18. Time = 26 seconds

Speed = 16 yards per second

19. Speed = 19 miles per hour

Distance = 40 miles

20. If Summer travels for three days at 55 yards per minute how far will she have traveled?