Chapter 4 The Structure of the Atom

The amount of neutrons determine the element.

In the substance, Carbon-14, the 14 refers to the

What type of radiation is being emitted?

What unit do we use when talking about the mass of elements?

What type of reaction can change one element into another?

The first person to suggest that the atom existed was...

What is the charge on an alpha particle?

He is responsible for the Plum Pudding Model

He discovered the neutron.

What term is defined as the weighted average mass of the isotopes of an element?

The mass of a neutron is approximately equal to the mass of a proton.

Isotopes are forms of an element that have the same number of protons but a different number of

What particle has a 1+ charge?

He believed that empty space could not exist.

The atomic number is the number of what subatomic particle.

What is the charge of a β particle?

Millikan used the charge:mass discovered by this scientist to determine the mass of the e-

When labeling isotopes we use the chemical symbol followed by what number?

What is the sum of the atomic number and the number of neutrons called?

What did Robert Millikan determine with his oil droplet experiment.

Which isotope of Iodine is most likely the most abundant?

If you wanted to see an individual atom what would you use?

Average atomic masses are

Mass number will always be a whole number.

The periodic table is organized by

The smallest particle of an element that retains the properties of the element is called a(n)..

Rutherford is most known for his...

What type of radiation is being emitted?

The stability of a nucleus is determined by the ratio of electrons to protons.

What type of reaction involves the formation of bonds?

This is an element contains 26 electrons and rusts in the presence of air

What did Millikan calculate to be the mass of an electron?

The conservation of mass is explained by this person's theory...

Gamma radiation alone results in the formation of a new element

They discovered the cathode ray.