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Isotopes

Isotopes

Assessment

Presentation

Science

9th Grade

Medium

NGSS
HS-PS1-8, HS-PS1-1

Standards-aligned

Created by

Karen Mogren

Used 141+ times

FREE Resource

11 Slides • 11 Questions

1

Isotopes

The questions in this lesson will be graded. Taking notes on your own paper will be helpful!

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3

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4

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5

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6

Multiple Select

Which of the following are the SAME between two isotopes?

1

atomic number

2

protons

3

neutrons

4

atomic mass

5

the element

7

Multiple Select

Which of the following are DIFFERENT between two isotopes?

1

atomic number

2

protons

3

neutrons

4

atomic mass

5

the element

8

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9

Isotope Notation

Scientists have to communicate a lot of information about the atoms they are talking about. It would be frustrating to write it all out in sentences, so they use a shorthand notation that shows everything you might need to know.

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11

Fill in the Blank

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What element is this?

12

Fill in the Blank

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What is the atomic number of this atom?

13

Fill in the Blank

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What is the atomic mass of this atom?

14

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15

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16

Fill in the Blank

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What isotope is this?

*Write your answer in for form of "element-##"

(e.g. carbon-14).

17

Fill in the Blank

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What is the atomic mass of this isotope?

18

Fill in the Blank

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How many neutrons does this isotope have?

19

Uranium-235

This is the correct way to write uranium-235. This atom has 92 protons (the atomic number) and 143 neutrons (atomic mass - atomic number). Its mass is 235.

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20

Multiple Choice

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Which of these is the correct way to write oxygen-18?

1

A

2

B

3

C

4

D

21

Fill in the Blank

How many protons are in potassium-40?

22

Fill in the Blank

How many neutrons are in potassium-40?

Isotopes

The questions in this lesson will be graded. Taking notes on your own paper will be helpful!

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