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Isotopes

Authored by Kelly Manhart

Chemistry

8th - 10th Grade

NGSS covered

Used 26+ times

Isotopes
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15 questions

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1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

How many neutrons in C-14?

6
7
14
8

2.

MULTIPLE CHOICE QUESTION

1 min • 12 pts

Media Image

How many neutrons does the isotope of lithium have?

8
3
4
5

Tags

NGSS.MS-PS1-1

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

What do these isotopes of carbon all have in common?

neutrons & mass number
atomic number and neutrons
atomic number and electrons
protons, atomic number, and mass number

Tags

NGSS.MS-PS1-1

4.

MULTIPLE CHOICE QUESTION

45 sec • 12 pts

Media Image

In a correctly written symbol what would be located in the "A" position?

number of neutrons
atomic number
number of electrons 
mass number

Tags

NGSS.MS-PS1-1

5.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

What quantities vary between isotopes of an element?

protons, electrons, and atomic mass
protons, electrons, and atomic number
neutrons and electrons
neutrons and atomic mass

Tags

NGSS.HS-PS1-8

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

which explanation of this notation is correct?

 12 is proton #
6 tells you there are 6 neutrons
6 tells you there are 6 protons
12 is not a mass # here

Tags

NGSS.MS-PS1-1

7.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

24.1% of all the isotopes of a an element have a mass of 75.23 amu, 48.7% have a mass of 74.61 amu, and 27.2% have a mass of 75.20 amu.
What is the average mass of this element?

74.92 amu
24.97 amu
75.01 amu
74.51 amu

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