Midterm

When calculating significant figures, when are zeroes before the first digit significant?
Ex)
0445
00.23
0.096

• Always
• Never
• When there is a decimal
• On Tuesdays

When calculating significant figures, when are zeroes between two digits significant?
Ex)
103
2.0009
0.7809

• Always
• Never
• When there is a decimal
• When there is only one

When calculating significant figures, when are zeroes after the first digit significant?
Ex)
20
60.0
72.80

• Always
• Never
• When there is a decimal
• When it is after the decimal

What is 6.5 x 10⁴ in standard form?

• 65
• .00065
• 650,000
• 65,000

What is 3.2 x 10^-5 in standard form?

• 320,000
• .000032
• .00032
• 32

Write 23,000,000 in scientific notation

• 2.3 x 10⁷
• 2.3 x 10⁸
• 2.3 x 10^-7
• 2.3 x 7

Write .000004 in scientific notation

• 4.0 x 10⁶
• 4.0 x 7
• 4.0 x 10^-6
• 4.0 x 10⁷

How many valence electrons does Flerovium have? (Fl #114)

• 114
• 289
• 7
• 4

If Indium (In) has a mass number of 115, how many neutrons does it have?

• 66
• 49
• 115
• 3

This is a correct dot diagram for oxygen (O)

• true
• false

Tags

NGSS.MS-PS1-1