Focus On Physical Science: California Grade 8

Chapter 4: Understanding the Atom

Math Practice

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1.
Find the mass of eight protons.
A)7.288 x 10-27 g
B)1.33816 x 10-24 g
C)1.340 x 10-23 g
D)1.33816 x 10-23 g
2.
Find the mass of three electrons.
A)5.025 x 10-24 g
B)5.018 x 10-24 g
C)2.733 x 10-27 g
D)2.733 x 10-28 g
3.
Find the mass of two protons.
A)3.3454 x 10-23 g
B)3.3454 x 10-24 g
C)3.350 x 10-24 g
D)1.822 x 10-27 g
4.
Find the mass of six neutrons.
A)1.005 x 10-23 g
B)1.003 x 10-23 g
C)1.005 x 10-24 g
D)5.466 x 10-27 g
5.
Find the mass of nine electrons.
A)8.199 x 10-27 g
B)1.505 x 10-23 g
C)1.5075 x 10-23 g
D)8.199 x 10-28 g
6.
Find the mass of four protons.
A)6.6908 x 10-23 g
B)6.6908 x 10-24 g
C)6.700 x 10-24 g
D)3.644 x 10-27 g
7.
Find the mass of seven electrons.
A)1.1725 x 10-23 g
B)1.171 x 10-23 g
C)6.377 x 10-27 g
D)6.377 x 10-28 g
8.
Find the mass of five neutrons.
A)4.555 x 10-27 g
B)8.364 x 10-24 g
C)8.375 x 10-23 g
D)8.375 x 10-24 g
9.
Find the mass of four electrons.
A)6.700 x 10-24 g
B)6.691 x 10-24 g
C)3.644 x 10-27 g
D)3.644 x 10-27 g
10.
Find the mass of six protons.
A)5.466 x 10-27 g
B)1.00362 x 10-24 g
C)1.005 x 10-23 g
D)1.00362 x 10-23 g
Grade 8
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