Chapter 3

The number '14' in the name Carbon-14 represents the ______.

• mass number
• atomic number
• number of protons
• number of electrons

How many neutrons does  Fluorine-19 contain?

• 9
• 19
• 10

How many protons does Fluorine-19 contain?

• 9
• 19
• 10

Tags

NGSS.MS-PS1-1

If X is the symbol for an element, which of the following two symbols represent    isotopes of the same element?     I. ⁷⁷₃₅X  II. ⁷⁷₃₃X  III. ⁸¹₃₇X  IV. ⁸¹₃₅ X

• I and II
• III and IV
• I and IV
• I and III

Tags

NGSS.HS-PS1-8

What is the mass number?

• the number of protons
• the number of protons and neutrons
• the number of neutrons
• the number of protons and electrons

Choose the particle that has no charge.

• nucleus
• neutron
• proton
• electron

What is the mass number of this nucleus?

• 1
• 3
• 4
• 7

Tags

NGSS.MS-PS1-1

What is the mass number of this atom?

• 4
• 5
• 9
• none of the above

Tags

NGSS.MS-PS1-1

What is the mass number of this atom?

• 8
• 16
• 24
• none of the above

Tags

NGSS.MS-PS1-1

Which particles make up the nucleus of an atom?

• protons and neutrons
• electrons and protons
• electrons, protons, and neutrons
• electrons and neutrons

Tags

NGSS.MS-PS1-1