Practice Proton in Chemistry
Use these practice problems to test your method after reviewing the concept explanation and worked examples.
Quick Recap
A positively charged subatomic particle found in the nucleus of every atom, with a charge of +1 and a mass of approximately 1 atomic mass.
The identity badge of an atom—how many protons determines what element it is.
Example 1
easyA sulfur atom has 16 protons. What is its atomic number, and how does the number of protons relate to its identity as sulfur?
Example 2
mediumThe mass of a single proton is approximately 1.673 \times 10^{-24} g. How many protons would it take to have a combined mass of 1 g?
Example 3
easyHow many protons are in an atom of potassium (K, atomic number 19)?
Example 4
mediumWhy doesn't sodium turn into magnesium during an ordinary chemical reaction, even if electrons are lost or gained?