Recent Lessons

Show all results for ""

Feature Overview

Ace your exams with our all-in-one platform for creating and sharing quizzes and tests.

Quizzes

Create quizzes and tests automatically from your content using AI.

Flashcards

Automatically turn your notes into digital flashcards.

Share, Export & Embed

Share with classmates or export to Excel and your learning management system.

Stats & Reporting

Auto-grading quizzes and tests with detailed stats and reports.

Mobile Apps

The smarter way to study – wherever you are.

Pricing

Search...

10 Questions

2 Views

Atomic Theory Overview and Decay Types

Choose a study mode

Play Quiz

Study Flashcards

Spaced Repetition

Chat to lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

What is the change in atomic number during α-decay?

It remains the same

It increases by 4

It decreases by 1

It decreases by 2 (correct)

Which statement is true regarding β-decay?

Atomic number increases by 1 (correct)

Mass number decreases by 1

Mass number remains unchanged and atomic number decreases

A proton is converted into a neutron

What is a characteristic of γ-decay?

Mass number decreases by 1

It often accompanies α- or β-decay (correct)

It results in an atomic number increase

It only occurs independently

Which of the following equations represents α-decay?

223_88 Ra → 219_86 Rn + 2_He Signup and view all the answers

In β-decay, what particle is emitted during the conversion of a neutron?

Beta particle Signup and view all the answers

Which radioactive decay process keeps the mass number unchanged?

β-decay Signup and view all the answers

What happens to the atomic number in γ-decay?

It remains the same Signup and view all the answers

Which of the following decay types specifically involves the conversion of a neutron?

β-decay Signup and view all the answers

What is the result of α-decay regarding the mass number?

Mass number decreases by 4 Signup and view all the answers

Which of the following statements is false concerning radioactive decay?

The atomic number increases during α-decay Signup and view all the answers

Study Notes

Atomic Theory Overview

The mass number decreases by 4 and the atomic number decreases by 2 in alpha decay.
An example of alpha decay is when radium-223 decays into radon-219 and an alpha particle (helium-4).

Beta Decay

In beta decay, the mass number remains the same, but the atomic number increases by 1.
A neutron is converted into a proton and an electron during beta decay.
An example of beta decay is when carbon-14 decays into nitrogen-14 and an electron.

Gamma Decay

Gamma decay often occurs with alpha or beta decay, or during electron capture.
The atomic number decreases by 1 but the mass number remains the same.

Studying That Suits You

Use AI to generate personalized quizzes and flashcards to suit your learning preferences.

Description

Explore the fundamentals of atomic theory, focusing on the different types of radioactive decay: alpha, beta, and gamma. This quiz will test your understanding of how these decays affect mass and atomic numbers, along with real-world examples.