Atomic Number, Atomic Mass

Atomic Number, Atomic Mass

Assessment

Flashcard

Chemistry

9th - 12th Grade

Practice Problem

Hard

Created by

Wayground Content

FREE Resource

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15 questions

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1.

FLASHCARD QUESTION

Front

What is the measure mainly of the nuclear particles in an atom?

Back

Mass number (the sum of protons and neutrons).

2.

FLASHCARD QUESTION

Front

If a carbon-12 atom has 6 protons, how many neutrons must be added to create a carbon-15 atom?

Back

3 Neutrons (0 Protons).

3.

FLASHCARD QUESTION

Front

How many neutrons does calcium (Ca) have if its atomic number is 20 and its mass number is 40?

Back

20 Neutrons.

4.

FLASHCARD QUESTION

Front

In the atomic symbol 24Na-2, how many electrons does this atom have?

Back

13 Electrons.

5.

FLASHCARD QUESTION

Front

What are subatomic particles with a negative charge called?

Back

Electrons.

6.

FLASHCARD QUESTION

Front

What is the atomic number of an element?

Back

The number of protons in the nucleus of an atom.

7.

FLASHCARD QUESTION

Front

How do you calculate the mass number of an atom?

Back

By adding the number of protons and neutrons.

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