Isotopes Quiz

Isotopes Quiz

9th Grade

15 Qs

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Isotopes Quiz

Isotopes Quiz

Assessment

Quiz

Chemistry

9th Grade

Hard

Created by

Nenuka Abeyratne

FREE Resource

15 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

10 sec • 5 pts

What is the difference between atomic number and mass number?

Atomic number is the number of protons in the nucleus, while mass number is the sum of protons and neutrons.

Atomic number is the number of neutrons in the nucleus, while mass number is the sum of protons and electrons.

Atomic number is the sum of protons and neutrons, while mass number is the number of protons in the nucleus.

Atomic number is the number of electrons in the nucleus, while mass number is the sum of protons and electrons.

2.

MULTIPLE CHOICE QUESTION

10 sec • 5 pts

How do isotopes of an element differ from each other?

Isotopes of an element differ in the number of neutrons they contain.

Isotopes of an element differ in their electron configuration.

Isotopes of an element differ in their atomic number.

Isotopes of an element differ in their chemical properties.

3.

MULTIPLE CHOICE QUESTION

10 sec • 5 pts

Explain the concept of isotopic abundance.

Isotopic abundance is the speed at which isotopes decay in a sample

Isotopic abundance refers to the color of isotopes in a sample

Isotopic abundance is the measure of the volume of isotopes in a sample

Isotopic abundance is the relative amount of each isotope of an element in a sample, typically expressed as a percentage or fraction of the total amount of the element.

4.

MULTIPLE CHOICE QUESTION

10 sec • 5 pts

Why is it important to consider isotopic abundance when calculating average atomic mass?

To simplify the calculation process

Isotopic abundance does not affect average atomic mass

To account for the different masses of isotopes of an element and ensure accuracy in the average atomic mass calculation.

Isotopic abundance is only relevant for certain elements

5.

MULTIPLE CHOICE QUESTION

10 sec • 5 pts

Give an example of an element with multiple isotopes and their respective abundances.

Nitrogen-14 (98.9%), Nitrogen-15 (1.1%), Nitrogen-16 (0.0001%)

Oxygen-16 (99.9%), Oxygen-17 (0.1%), Oxygen-18 (0.0001%)

Hydrogen-1 (99.9%), Hydrogen-2 (0.1%), Hydrogen-3 (0.0001%)

Carbon-12 (98.9%), Carbon-13 (1.1%), Carbon-14 (0.0001%)

6.

MULTIPLE CHOICE QUESTION

10 sec • 5 pts

Which subatomic particle is responsible for the atomic number of an element?

electron

proton

neutron

photon

7.

MULTIPLE CHOICE QUESTION

10 sec • 5 pts

How is the mass number of an isotope calculated?

By dividing the number of protons by the atomic number

By adding the number of protons and neutrons in the nucleus.

By subtracting the number of electrons from the atomic number

By multiplying the number of protons and neutrons in the nucleus

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