Atomic mass, atomic number and how to determine number of neutron

Question 1

What is the atomic number of an element?

Answer 1

The atomic number is the number of protons in the nucleus of an atom.

Question 2

True or False: The atomic mass of an element is always a whole number.

Answer 2

False

Question 3

How do you calculate the number of neutrons in an atom?

Answer 3

Subtract the atomic number from the atomic mass.

Question 4

Fill in the blank: The atomic mass of an element is the weighted average of the masses of its ______.

Answer 4

isotopes

Question 5

What is the relationship between atomic number and the identity of an element?

Answer 5

The atomic number uniquely identifies an element.

Question 6

Multiple Choice: Which of the following represents the atomic mass of Carbon-12? A) 12 B) 12.01 C) 14

Answer 6

A) 12

Question 7

What does the atomic mass unit (amu) represent?

Answer 7

The atomic mass unit is a standard unit of mass that quantifies mass on an atomic or molecular scale.

Question 8

True or False: Neutrons have a positive charge.

Answer 8

False

Question 9

If an element has an atomic number of 6 and an atomic mass of 14, how many neutrons does it have?

Answer 9

8 neutrons

Question 10

What is the significance of isotopes in relation to atomic mass?

Answer 10

Isotopes have the same number of protons but different numbers of neutrons, affecting the atomic mass.