Atoms

What is the mass of a neutron?

1 am

What value is closest to the mass of the atom?

10 amu

What do an electron and a neutron have in common?

Each particle exists inside an atom.

The Venn diagram compares protons with neutrons. Which shared property belongs in the region marked "B"?

Has mass of 1 amu

The Venn diagram compares protons with electrons. Which shared property belongs in the region marked "B"?

Is electrically charged

Which is a characteristic of the part of the atom marked "B"?

It is negatively charged.

Which is a characteristic of the part of the atom marked "A"?

It is very dense.

What is most likely true of an atom with a mass of 15 amu?

The total number of protons and neutrons is 15.

Roberto creates an animation titled "Flying through an Atom." The animation makes it seem as if the viewer passes all the way through an atom, starting from one side, then through the atom's center, and then leaving through the other side. What is the best description of the order of events in the animation?

The viewer travels through the electron cloud, then the nucleus, and then the electron cloud again.

Which statement describes an atomic nucleus?

An atomic nucleus contains most of the atom's mass.

Which argument best explains the charge of an atomic nucleus?

An atomic nucleus is positively charged because it is composed of protons.

Which statement best explains why the overall charge on an atom is zero?

The positive charge of the protons in the nucleus equals the negative charge in the electron cloud.

Based on the information shown, which statement about the subatomic particle must be correct?

Its location is in the nucleus, because the particle is a proton or a neutron.

What is the main difference between protons and neutrons?

Protons have an electrical charge, but neutrons have no charge.

How does an atom change if all of its electrons are removed?

The atom becomes positively charged.

The subatomic particle that has the least mass is the

electron

The part of an atom that is mostly empty space is the

electron cloud

A proton has ______charge.

poitive

What are the two parts of an atom?

the nucleus and the electron cloud

What best explains how they should complete the table?

with "Outside of the nucleus," because the particle is an electron