Answers to the Quiz of Your Knowledge of Atomic Structure
Auto Beauty Business Culture Dieting DIY Events Fashion Finance Food Freelancing Gardening Health Hobbies Home Internet Jobs Law Local Media Men's Health Mobile Nutrition Parenting Pets Pregnancy Products Psychology Real Estate Relationships Science Seniors Sports Technology Travel Wellness Women's Health

Answers to the Quiz of Your Knowledge of Atomic Structure

Here are the correct answers to the quiz on atomic structure, marked with an asterisk.

Here are the correct answers to the quiz on atomic structure, marked with an asterisk.

1. The smallest unit of a chemical element is known as:

A. an atom*

B. a molecule

C. a compound

D. a proton

E. an electron

2. Which of the following statements is true?

A. Two protons are attracted toward one another, because both carry a negative charge

B. Two protons are attracted toward one another, because both carry a positive charge

C. A proton an a neutron repel one another, because they carry opposite charges

D. A proton and an electron attract one another, because opposites attract*

E. An electron and a neutron repel one another, because they carry opposite charges

3. The atomic number of an element is equal to:

A. the number of neutrons plus the number of electrons

B. the number of protons in the nucleus of each of its atoms*

C. the number of positrons in the nucleus of each of its atoms

D. the number of positrons plus the number of neutrons in the entire atom

E. the number of protons plus the number of neutrons in the nucleus of each of its atoms

4. Atomic mass refers to which of the following in the atoms on an element?

A. the number of protons, neutron, and electrons

B. the number of neutrons only

C. the number of neutrons plus the number of protons*

D. the number of electrons plus the number of protons

E. the number of electrons only

5. All of the following statements are correct, except:

A. hydrogen has an atomic number of 1, because its atoms each contain one proton

B. carbon has an atomic number of 6, because its atoms each contain six neutrons*

C. the electrical charge of an atom is zero when the number of electrons in its electron cloud equals the number of protons in its nucleus

D. a substance made of atoms each having 5 neutrons and 6 protons has an atomic mass of 11

E. an electron is much smaller than a proton

6. The atomic number of oxygen is 8. Therefore, to be oxygen, an atom must have which of the following?

A. 8 electrons

B. 8 neutrons

C. 8 protons*

D. 8 neutrons and 8 protons

E. 8 neutrons, 8 protons, and 8 electrons

7. Atomic theory states that ___

A. the number of protons and neutrons in an atom’s nucleus must be equal

B. atoms are composed of smaller units known as molecules

C. two or more atoms make up a molecule

D. all substances are composed of atoms*

E. the atomic number must be twice the atomic mass

8. Electromagnetic radiation includes which of the following?

A. radio waves

B. ultraviolet light

C. visible light

D. gamma rays

E. all of the above*

9. All of the following particles smaller than an atom have an electrical charge, except:

A. neutrons*

B. positrons

C. protons

D. electrons

E. the nucleus of an atom

10. Electrons occupying higher orbitals of an atom have ___ compared to electrons occupying lower orbitals of the same atom

A. more mass

B. stronger charges

C. weaker charges

D. more energy*

E. less energy

Consumer tip: Get discounts on leading learning brands by exploring the latest discount codes for learning. Utilize community-sourced coupons, promo codes, and in-store offers using our partner websites.
Need an answer?
Get insightful answers from community-recommended
experts
in Chemistry on Knoji.
Would you recommend this author as an expert in Chemistry?
You have 0 recommendations remaining to grant today.
Comments (2)

Thanks for the share

I managed to get 7 out of 10 so my high school chemistry wasn't as bad as I thought. Good to be reminded of this again, thanks!

ARTICLE DETAILS
RELATED ARTICLES
RELATED CATEGORIES
ARTICLE KEYWORDS