Unit 4 Test Prep

Elements that lie along the stair-step line of the periodic table are ______.

At room temperature, most metals are ______.

A subatomic particle that has a negative charge is called a(n)

An iron atom has an atomic mass of 56. Its atomic number is 26. How many neutrons does the iron atom have?

Whose model determined that an atom's positive charge is concentrated in an atom's center?

The charge of an atom is

A family of elements that has 2 electrons in its outer energy level is the ______.

Atoms of the same element with different numbers of neutrons are called ______.

The only metal that is a liquid at room temperature is ______.

Democritus's original atomic theory was revised because it

A chemical family whose members exist as reactive diatomic molecules in the gaseous phase is the _______.

Which of these statements is NOT part of Dalton's atomic theory?

Any element with an atomic number greater than that of uranium is a(n) ________.

Which of the following statement is NOT true?

Horizontal rows of the periodic table are called _______.

What is an atom's nucleus made of?

Thomson is responsible for discovering that an atoms contains

Who determined that atoms could be divided?

Three transition elements in Group 12 of the periodic table are ____.

Unlike the modern model of the atom, Bohr's model states that

Which of the following elements is not a coinage metal?

The most unreactive group of elements is the _____.

Dalton's atomic theory was accepted because

Each inner energy level of an atom has a maximum number of ______ it can hold.

The elements in Groups 3 through 12 of the periodic table are the ______.

In general, nonmetals are _____.

In general, metals are ______.

Different forms of the same element that have different properties because of different atom arrangements are called ___

Elements that are gases, or are brittle solids, and are poor conductors at room temperature are ______.

Most of the mass of an atom is found in its _____.

An element's atomic number is equal to its number of

Oxygen's atomic number is 8. This means that an oxygen atom has

Valence electrons determine an atom's

Which metalloid is in the fourth period and the same group as Carbon?

In _________ atomic model, negative electrons orbit the positively charged nucleus.

Each row in the periodic table ends with a ______.

Which of the following elements is not in the iron triad?

According to modern atomic theory, it is nearly impossible to determine an electron's exact

Cobalt, iron, and nickel are known as the _____ triad.

The noble gases are in _____.

Metals can be used as wire because they are ______.

Which category of elements have the property of being malleable and ductile?

A chemical symbol represents the ______ of an element.

Which nonmetal is highly reactive?

Atoms have no electric charge because they

Thomson made his discovery about the atom during an experiment using

Two different isotopes of an element have different

Which of the Group 13 elements is NOT a metal?

A family of elements that contains the most reactive metals is the ______.

An allotrope of carbon that is soft and can be used as a lubricant is _______.

Dot diagrams are used to represent ______.