Evaluating Scientific Explanations

Question 1

Which statement correctly describes the nucleus of the atom?

Revolt · Accepted Answer

The nucleus of the atom contains most of the mass of an atom.

Question 2

Which of these phrases would go in the overlap? Select two options.

Revolt · Accepted Answer

Found in the nucleus; Has mass of one amu

Question 3

Which statement(s) correctly compare the masses of protons, neutrons, and electrons? Select two options.Protons and neutrons have similar mass.Protons and electrons have similar mass.Neutrons and electrons have similar mass.Protons are smaller than a neutron or an electron.Neutrons are smaller than a proton or an electron.Electrons are smaller than a proton or a neutron.

Revolt · Accepted Answer

Protons and neutrons have similar mass.; Electrons are smaller than a proton or a neutron.

Question 4

An atomic scientist was studying an atom and through experimentation found that the total negative charge of the area surrounding the nucleus is -9. Which statement correctly describes this atom?

Revolt · Accepted Answer

This atom has nine electrons.

Question 5

✔ 6814

Revolt · Accepted Answer

6; Selection 1: 6; Selection 2: 8; Selection 3: 6

Question 6

6✔ 814

Revolt · Accepted Answer

8

Question 7

✔ 6814

Revolt · Accepted Answer

6

Question 8

Cora wants to draw a model of an atom for her project for the science fair. She wants to draw an atom that has two protons, four neutrons, and two electrons. Which model is like Cora’s?

Revolt · Accepted Answer

[Image: At the center, 4 unmarked red balls are interspers...]

Question 9

Jaiden is writing a report about the structure of the atom. In her report, she says that the atom has three main parts and two subatomic particles. Do you agree with her? Why or why not?

Revolt · Accepted Answer

I disagree with her because an atom has two main parts: the nucleus and the electron cloud. Atoms have three subatomic particles: protons, neutrons, and electrons.

Question 10

Which of these statements did you include in your answer? Check all that apply

Revolt · Accepted Answer

The two main parts of an atom are the nucleus and the electron cloud.; The three subatomic particles of an atom are protons, neutrons, and electrons.

Evaluating Scientific Explanations Answers

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