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100
When one chemical substance is transformed into one or more different substances
Chemical change
100
Convert 1,207 mm->m
1.207 m
100
What is the mass of an atom with 8 electrons, 8 protons, and 10 neutrons.
18 amu
200
A change that alters the form substance but not its chemical composition
Physical change
200
Convert 12.60 mL --> L
0.0126 L
200
Weighted average of the individual masses of the atoms that make up an element. (atomic weight shown in periodic table)
Average atomic mass
300
How many significant figures is in the number: 0.006070
4 sig figs
300
Atoms of the same element with different numbers of neutrons.
Isotope
300
Based on this diagram, which isotope of copper is least abundant?
Copper-65
400
Write in scientific notation with 4 significant figures:
12,785,000
1.279 x 107
400
How many neutrons is in: 136C
7 neutrons
400
Calculate the average atomic mass of Boron. (4 sig figs)
10.83 amu
500
Calculate the mass percent of hydrogen in hydroxide (OH) if hydrogen has a mass of 2.0 g and the total mass of OH is 17.0 g. (3 sig figs)
11.8% of H in OH
500
How many neutrons is in Chlorine-37
20 neutrons
500
(4 sig figs)
28.08 amu