Counting Atoms Worksheet

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Counting Atoms Worksheet
• NaCl
– Na = 1
– Cl = 1
• BaCl2
– Ba = 1
– Cl = 2
• BaSO4
– Ba = 1
–S = 1
–O = 4
• CaSO4
– Ca = 1
–S = 1
–O = 4
• K2Cr2O7
–K = 2
– Cr = 2
–O = 7
• C6H4Cl2
• Mg (OH)2
• C2H4O2
• C7H5(NO2)3
–C = 6
–H = 4
– Cl = 2
–C = 2
–H = 4
–O = 2
• CH3OH
–C = 1
–H = 4
–O = 1
– Mg = 1
–O = 2
–H = 2
–C = 7
–H = 5
–N = 3
–O = 6
• Ca (H2PO4)2
– Ca = 1
–H = 4
–P = 2
–O = 8
• (CH3)2CO
• 2CHC3OOH
• 2HBr
• 6C6H4BrOH
–C = 3
–H = 6
–O = 1
–H = 2
–Br = 2
–C = 8
–H = 4
–O = 4
– C = 36
– H = 30
– Br = 6
–O = 6
E, C, M, Worksheet
1. Element
– Any substance that contains only one kind of atom
– Cannot be broken down
2. Compound
– Consists of atoms of two or more different elements
– Can be broken down
3. Mixture
– Consists of two or more different
elements/compounds
– Can be separated
E, C, M, Worksheet
4. Homogeneous – Evenly mixed/distributed
Hetergeneous – Not evenly mixed
E, C, M, Worksheet
6. Element
7. Compound
8. Homogeneous Mixture
9. Heterogeneous Mixture
10. Homogeneous Mixture
11. Compound
E, C, M, Worksheet
12. Homogeneous / Heterogeneous Mixture
13. Heterogeneous Mixture
14. Element
15. Compound
16. Compound
17. Element
18. Homogeneous Mixture
E, C, M, Worksheet
19. Heterogeneous Mixture
20. Homogeneous Mixture
21. Heterogeneous Mixture
22. Homogeneous/Heterogeneous Mixture
23. Element
24. Heterogeneous Mixture
25. Heterogeneous Mixture
26. Element
E, C, M, Worksheet
27. Compound
28. Homogeneous Mixture
29. Heterogeneous Mixture

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