Atomic structure

Atomic structure

Assessment

Flashcard

Science

9th Grade

Hard

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15 questions

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1.

FLASHCARD QUESTION

Front

What is atomic mass?

Back

The atomic mass is the weighted average mass of an element's isotopes, measured in atomic mass units (amu).

2.

FLASHCARD QUESTION

Front

What subatomic particles are found in the nucleus of an atom?

Back

Protons and Neutrons.

3.

FLASHCARD QUESTION

Front

What is the charge of a proton?

Back

Positive charge.

4.

FLASHCARD QUESTION

Front

What is the charge of a neutron?

Back

Neutral (no charge).

5.

FLASHCARD QUESTION

Front

What is the charge of an electron?

Back

Negative charge.

6.

FLASHCARD QUESTION

Front

How do you calculate the number of neutrons in an atom?

Back

Number of Neutrons = Atomic Mass - Atomic Number.

7.

FLASHCARD QUESTION

Front

What is the atomic number of an element?

Back

The atomic number is the number of protons in the nucleus of an atom, which determines the element's identity.

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