Atoms, Elements, and the Periodic Table

Question 1

If an atom has 2 protons, 2 electrons, and 4 neutrons, what is the atomic mass?

Accepted Answer

6

Question 2

If the atomic mass of an atom is 10.8 and it has 5 protons, how many neutrons does it have?

Accepted Answer

6

Question 3

If an element has an atomic number of 3, how many protons does it have?

Accepted Answer

3

Question 4

The ___ is the smallest subatomic particle.

Accepted Answer

Electron

Question 5

If an atom has 24 protons, it also has 24 __.

Accepted Answer

Electrons

Question 6

How many protons are in an atom with an atomic number of 42?

Accepted Answer

42

Question 7

Which subatomic particle has a negative charge?

Accepted Answer

Electron

Question 8

The atomic number is the number of ___ in an atom.

Accepted Answer

Protons

Question 9

The number of protons + neutrons is the ___.

Accepted Answer

Atomic mass

Question 10

Which subatomic particle of an atom has a positive charge?

Accepted Answer

Proton

Question 11

To find the atomic mass, I ___ the number of protons and neutrons.

Accepted Answer

Add

Question 12

Which subatomic particle has no charge and is neutral?

Accepted Answer

Neutron

Question 13

How many electrons are in an atom with an atomic number of 12?

Accepted Answer

12

Question 14

An an atom, which two particles are found in the nucleus?

Accepted Answer

Protons and neutrons

Question 15

The number of ___ and protons is equal.

Accepted Answer

Electrons

Questions 15