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Isotopes/structure of an atom

Isotopes/structure of an atom

Assessment

Flashcard

Chemistry

10th 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 an isotope?

Back

Isotopes are variants of a chemical element that have the same number of protons but different numbers of neutrons, resulting in different atomic masses.

2.

FLASHCARD QUESTION

Front

How do you calculate the atomic mass of an element with multiple isotopes?

Back

The atomic mass is calculated by taking the weighted average of the masses of its isotopes, based on their relative abundances.

3.

FLASHCARD QUESTION

Front

What is the atomic mass of an element with two isotopes: 10.01 amu (19.8% abundance) and 10.99 amu (80.2% abundance)?

Back

10.8 amu.

4.

FLASHCARD QUESTION

Front

What do isotopes of an element have in common?

Back

Isotopes of an element have the same number of protons and electrons.

5.

FLASHCARD QUESTION

Front

What differs between isotopes of the same element?

Back

Isotopes differ in the number of neutrons.

6.

FLASHCARD QUESTION

Front

What is the mass number of an atom?

Back

The mass number is the total number of protons and neutrons in the nucleus of an atom.

7.

FLASHCARD QUESTION

Front

How many protons are in neon-22?

Back

10 protons.

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