Chapter 3: Atoms: The Building Blocks of Matter!

In a neutral atom, there are equal numbers of:

A positively charged particle with mass 1.673 x 10^–24 g is a(n)

Calcium-48 contains

Carbon-14, the radioactive nuclide used in dating fossils, has

The behavior of cathode rays led scientists to conclude that rays were composed of ___.

Atoms of the same element can differ in:

How many neutrons does Zn-66 have?

Calculate average mass of copper if copper-63 is 69.17% abundant and copper-65 is 30.83%

A nuclear particle that has about the same mass as a proton, but with no electrical charge is:

Most of the volume of an atom is made up of the:

What was Rutherford's conclusion after his gold-foil experiment?

The atomic symbol for Lithium, ⁷₃Li, indicates that the:

Complete the following nuclear equation:

The basic principles of atomic theory that are still recognized today were first conceived by:

Balance this nuclear equation:

Dalton's atomic theory helped explain the law of conservation of mass because it stated atoms

All isotopes of hydrogen contain

Ag-109 has 62 neutrons. The neutral atom has

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

An electrically neutral atom of mercury has

The total number of protons and neutrons in the nucleus of an isotope is called its ___ number.

An atom of potassium has 19 protons and 20 neutrons. What is its mass number?

Cl-37 in abundance 75% and Cl-35 in abundance 25%. Calculate average mass

Calculate average mass: O-16, 15.994 @ 99.757%; O-17, 16.999 @ .038%; and O-18, 17.999 @ .205%

The average atomic mass of an element is the average of the atomic masses of its

How are isotopes of the same element similar?

The number of protons in the nucleus of an element is called its _____ number.

An aluminum isotope consists of 13 protons, 13 electrons, and 14 neutrons. Its mass number is

Atoms of one element that have different masses are called:

In Rutherford's experiment, a small % of the + charged particles bombarding the metal's surface

Magnesium has three common isotopes. Based on its average atomic mass, which is the most common

Because most particles fired at metal foil passed straight through, Rutherford concluded that

The discovery of the electron resulted from experiments using

What is needed to balance the nuclear equation below?

A neutral carbon atom (atomic number 6) has

An example of the law of multiple proportions is the existence of: