Mark the following statements as true or false. If a statement is false, correct it to make a true statement.
Every element has a characteristic number of protons, which is called the element's mass number.

Verified step by step guidance

1. Step 1: Understand the terminology in the statement. The 'mass number' refers to the total number of protons and neutrons in the nucleus of an atom, not just the number of protons. The number of protons in an element is called the 'atomic number.'
2. Step 2: Analyze the statement. It claims that the characteristic number of protons in an element is called the 'mass number.' This is incorrect because the characteristic number of protons is actually the 'atomic number.'
3. Step 3: Correct the false statement. The corrected statement should read: 'Every element has a characteristic number of protons, which is called the element's atomic number.'
4. Step 4: Review the corrected statement to ensure it aligns with the definitions of atomic number and mass number in chemistry and physiology.
5. Step 5: Conclude that the original statement is false and provide the corrected version for clarity.

Key Concepts

Atomic Number

The atomic number of an element is the number of protons found in the nucleus of its atoms. This number uniquely identifies an element and determines its position on the periodic table. For example, hydrogen has an atomic number of 1, meaning it has one proton.

Mass Number

The mass number of an element is the total number of protons and neutrons in the nucleus of an atom. It is not the same as the atomic number, which only counts protons. For instance, carbon has an atomic number of 6 and a mass number of 12, indicating it has 6 neutrons.

Element Identification

Elements are identified by their atomic number, which is fundamental in chemistry. The mass number, while important for understanding isotopes, does not define the element itself. Therefore, the statement in the question is false; the correct statement is that every element has a characteristic number of protons, which is called the element's atomic number.