Question

question 5
which of the subatomic particles are found in the nucleus?

• electrons
• hydrogen
• neutrons
• protons
• carbon

question 6
changing the number of select will change the atomic number, changing the identity of the element.
changing the number of select will make the element an isotope.
changing the number of select in an element will give it a charge, making it an ion.
question 7
how many neutrons are in the nucleus of carbon-13?

Explanation:

Question 5

Subatomic particles in the nucleus: Electrons orbit the nucleus, hydrogen and carbon are elements (not subatomic particles). Neutrons and protons are in the nucleus.

1. Atomic number = number of protons. Changing protons changes element identity.
2. Isotopes have same protons, different neutrons. Changing neutrons makes isotopes.
3. Ions have charge from electron gain/loss. Changing electrons gives charge.

Step1: Recall formula for neutrons

Neutrons = Mass number - Atomic number.

Step2: Identify values for Carbon-13

Carbon has atomic number (protons) = 6. Mass number = 13.

Step3: Calculate neutrons

Neutrons = \( 13 - 6 = 7 \).

Answer:

C. neutrons, D. protons

Question 6