Atomic Structure

Atomic Structure

Assessment

Flashcard

Chemistry

10th - 12th Grade

Practice Problem

Hard

Created by

Wayground Content

FREE Resource

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22 questions

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1.

FLASHCARD QUESTION

Front

Mass number of an element with 18 protons, 18 electrons, and 19 neutrons.

Back

37

2.

FLASHCARD QUESTION

Front

The atomic number of an element with 9 protons, 9 electrons, and 10 neutrons is:

Back

9

3.

FLASHCARD QUESTION

Front

If the number of electrons in an atom changes you make a(n) __________________.

Back

ion

4.

FLASHCARD QUESTION

Front

How many neutrons does uranium-239 have?

Back

147

5.

FLASHCARD QUESTION

Front

Which statement about subatomic particles is true? Options: Protons, neutrons, and electrons all have about the same mass., Unlike protons or neutrons, electrons have no mass., Neutrons have no charge and no mass., An electron has far less mass than either a proton or neutron.

Back

An electron has far less mass than either a proton or neutron.

6.

FLASHCARD QUESTION

Front

What is unique for any given element?

Back

the number of protons

7.

FLASHCARD QUESTION

Front

Which statement is true about oxygen-17 and oxygen-18?

Back

They are isotopes of oxygen.

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