The Structure of the Atom

Question 1

A scientist uses an accelerator and high energy electrons to study the particles inside the protons of a helium atom. What particles is the scientist studying?

Revolt · Accepted Answer

the He quarks

Question 2

The mass number of Fe2+ is 56. How many neutrons are there in a single Fe2+ atom?

Revolt · Accepted Answer

30

Question 3

A particle that travels around the nucleus of an atom in orbitals is called a(n)

Revolt · Accepted Answer

electron.

Question 4

The table below gives some characteristics of element Y.Characteristics of element YValuesMass number11Number of neutrons in a single atom6Average atomic mass (grams/mole)10.81What is the identity of element Y?

Revolt · Accepted Answer

B

Question 5

Which element has 16 protons in its nucleus?

Revolt · Accepted Answer

sulfur

Question 6

An atom contains one proton, one electron, and one neutron. Which two particles are most similar in mass?

Revolt · Accepted Answer

the proton and the neutron

Question 7

The diagram below shows some subatomic particles.What is the particle that is labeled with a question mark (?) in the diagram?

Revolt · Accepted Answer

quark

Question 8

The table below gives the numbers of protons, electrons, and neutrons in four atoms.AtomNumber of protonsNumber of neutronsNumber of electrons198929983991049109Based on the table, which atom has a charge of –1?

Revolt · Accepted Answer

3

Question 9

What is the charge on an electron?

Revolt · Accepted Answer

–1

Question 10

Which two particles are found in the nucleus of an atom?

Revolt · Accepted Answer

protons and neutrons

The Structure of the Atom Answers

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