Question

electrons: 6 a. what subatomic part(s) affect(s) the mass of your atom? (1pt) b. which particles are heavy and which particles are light? (1pt) c. what is a rule for determining the mass? (1pt) d. using all of your rules, figure out what changes for each of these actions to an atom (you choose the element). you can test your ideas with the simulation. make sure to reset your atom to its original state before completing a new action. (2pts each) action what changes? how does it change? add a proton element mass

Explanation:

Step1: Identify sub - atomic parts affecting mass

Protons and neutrons in the nucleus contribute to the mass of an atom as electrons have negligible mass.

Step2: Classify heavy and light particles

Protons and neutrons are heavy particles. Electrons are light particles.

Step3: Determine mass - rule

The mass of an atom is approximately equal to the sum of the number of protons and neutrons (mass number = number of protons + number of neutrons).

Step4: Analyze effect of adding a proton

When a proton is added:

• Element changes because the atomic number (number of protons) determines the element.
• Mass increases because a proton has mass and is added to the nucleus.

Answer:

a. Protons and neutrons.
b. Heavy: Protons, neutrons; Light: Electrons.
c. Mass number = number of protons + number of neutrons.
d. Add a Proton:

• What Changes?: Element, Mass.
• How Does It Change?: Element changes as atomic number changes; Mass increases as a proton is added to the nucleus.