Chemistry I Chapter 4 Quiz

Which scientist determined that almost all of an atom's mass is located in its nuclei

The volume of an atom is made up mostly of:

The atomic number is defined by its number of:

An atom has no net electrical charge because:

Process whereby some substances spontaneously emit radiation

Atoms with the same number of protons but different numbers of neutrons are:

List the number of protons, neutrons and electrons in Hydrogen-3.

High-energy radiation that has no charge and no mass.

What is the charge of a gamma ray?

The sum of the protons and neutrons in a nucleus is:

What is the negatively-charged particle in an atom called?

The weighted average mass of an element's isotopes.

In which of the cobalt isotopes is the number of neutrons the same as the number of protons?

How is the atomic mass unit (amu) defined?

List the number of electrons, protons, neutrons and name for the following isotope

Which of the following is true for any atom?

Radiation deflected toward the negatively charge plate is known as:

Calculate the average atomic mass of Carbon when 95.2% is 12.001 amu and 4.8% is 13.009 amu.

Ray of radiation traveling from the cathode to the anode.

List the number of protons, neutrons, electrons and name of the following isotope.

Equal to 1/12 the mass of a Carbon-12 atom.

An atom of Bismuth:

States that all matter is composed of atoms.

What fundamental particle is identical to a beta particle?

Process (not requiring energy) by which unstable nuclei lose energy.

An element contains 6 electrons,  What is the identity of this element?

Radiation deflected toward the positively charged plate is an indication of the presence of:

Calculate the average atomic mass of Boron which is 73.4% at 10.012 amu & 26.6 % at 11.008 amu.

Which of the following describes the mass of subatomic particles?

The rays and particles emitted by radioactive material.

The smallest particle of an element that retains the properties of the element is called:

The center-most part of an atom where the protons and neutrons are contained.

What is the charge of a beta particle?