19. Elements are pure substance because .
a. all their atoms have different atomic numbers
b...
Chemistry, 18.09.2021 22:10, michellealvarez985
19. Elements are pure substance because .
a. all their atoms have different atomic numbers
b. all their atoms have the same atomic number
c. all their atoms are linked to atoms of other elements
d. everything looks the same
Use the attached sheet of conversion factors to answer the conversion questions.
20. A measurement of 10.70 mm would be converted to cm.
a. 0.00107 c. 107.0
b. 1.070 d. 1070.
Answers: 3
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