Question

part i - explore the atom
open the build an atom simulation - click on the link posted in google classroom.
click on the atom option on the first screen
click on the green plus sign next to net charge
click on the green plus sign next to mass number
atoms are made of three subatomic particles - protons, neutrons, and electrons. the atom has two main parts - the nucleus and the orbits (which are also called the electron clouds)
drag a proton onto the atom. where does it go?
drag a neutron onto the atom. where does it go?
drag an electron onto the atom. where does it go?
what subatomic particles (protons, neutrons, and/or electrons) are found in the nucleus of an atom?
what subatomic particles (protons, neutrons, and/or electrons) are found in the orbits?
what element did you make when you added one proton, one neutron, and one electron?
add another proton to the atom that you made. what changes?
add another neutron to the atom that you made. what changes?
add another electron to the atom that you made. what changes?
what subatomic particle (proton, neutron, or electron) is responsible for determining the
a. identity of an atom?
b. mass of an atom?
c. net charge of an atom?

Explanation:

Atoms have a nucleus containing protons and neutrons, with electrons in orbits around it. The number of protons determines the element's identity. Protons and neutrons contribute to mass, and the balance of protons and electrons determines net - charge. Adding a proton changes the element, adding a neutron changes the isotope, and adding an electron changes the charge.

1. When you drag a proton onto the atom, it goes to the nucleus as protons are found in the nucleus.
2. When you drag a neutron onto the atom, it goes to the nucleus as neutrons are also found in the nucleus.
3. When you drag an electron onto the atom, it goes to the orbits (electron clouds) as electrons are found in the orbits around the nucleus.
4. Protons and neutrons are found in the nucleus of an atom.
5. Electrons are found in the orbits.
6. Adding one proton, one neutron, and one electron makes hydrogen as hydrogen has 1 proton, and often has 1 neutron and 1 electron in its most common isotope.
7. Adding another proton changes the element to helium as the number of protons determines the element's identity.
8. Adding another neutron changes the isotope of the element. It makes a heavier isotope of the existing element.
9. Adding another electron changes the net - charge of the atom, making it negatively charged.
10. A. Proton determines the identity of an atom as the atomic number (number of protons) defines the element.

B. Protons and neutrons are responsible for the mass of an atom as they are much more massive than electrons.
C. Electrons and protons together determine the net - charge of an atom. If there are more electrons than protons, the atom is negatively charged; if more protons than electrons, it is positively charged; and if equal numbers, it is neutral.

Answer:

1. The proton goes to the nucleus.
2. The neutron goes to the nucleus.
3. The electron goes to the orbits.
4. Protons and neutrons.
5. Electrons.
6. Hydrogen.
7. The element changes to helium.
8. The isotope of the element changes.
9. The net - charge of the atom changes.
10. A. Proton

B. Protons and neutrons
C. Electrons and protons