50 points 10 for each question will mark brainliest

question 1
which statement best describes how mass is distributed throughout the atom?

question 1 options:

electrons have very little mass, so most of the mass is located in the nucleus.

each part of the atom has about the same mass.

the mass of the atom is equally distributed throughout the atom.

the mass of the atom is all in the nucleus, and the electrons have zero mass.

question 2
which of the following statements most accurately describes the number of subatomic particles to account for the overall charge of an aluminum atom?

question 2 options:

aluminum has 13 protons and 13 neutrons and is therefore neutral.

aluminum has 13 protons and 14 neutrons, so it has 27 electrons and the overall charge is zero.

aluminum has 13 protons and 13 electrons and is therefore neutral.

aluminum has 13 protons and 16 electrons, so it has an overall charge of +3.

question 4 (0.1 points) question 4 saved
the sun produces tremendous amounts of energy. some of that energy reaches earth and affects earth’s systems. which statement explains how the sun produces this energy?

question 4 options:

the sun produces energy through combustion reactions through out it.

the sun produces energy through fusion reactions in its core.

the sun produces energy through convection cells on its surface.

the sun produces energy through radioactive decay in its core

question 5 (0.1 points) question 5 unsaved
which of the following will have the largest influence on the lifetime of a star?

question 5 options:

elemental composition

mass

volume

temperature

question 6
choose one of the following to complete in this long answer question. you must answer one of these (in your own words) in order to get an b+ or higher on this pre-test.

a) compare and contrast the main parts of an atom.

b) what questions do you have about atoms?

c) what questions do you have about radioactivity?

d) what questions do you have about the sun and its energy, or other stars and their energy?