Intro to the Periodic Table
Classifying the Elements
Periodic Trends
Ions
Ionic Bonds and Ionic Compounds
100

What kind of properties did early chemists use to sort the elements into groups?

Chemical and physical properties

100

What does the periodic table usually display in the boxes for each of the elements?

The symbols, names, and information about the structure of their atoms

100

What is an ion?

An atom or group of atoms that has a positive or negative charge

100

What are valence electrons?

The electrons in the highest occupied energy level of an element's atoms

100

What is an ionic compound?

A compound composed of cations and anions 

200

How did Mendeleev arrange the elements in his periodic table?

In order of the increasing atomic mass

200

What are the elements called in Group 1A?

Alkali metals

200

How are positive and negative ions formed?

When electrons transfer between atoms

200

How did you find the number of valence electrons in an atom?

By looking at the group number

200

What are ionic bonds?

The electrostatic forces that hold ions together in ionic compounds 

300

How are the elements arranged in the modern periodic table?

In order of the increasing atomic number

300

What are the elements in Group 2A called?

Alkaline Earth Metals

300

What is a cation?

An ion with a positive charge 

300

What are electron dot structures?

Diagrams that show the arrangement of valence electrons in the atoms of an element as dots

300

What does a chemical formula show?

The number of atoms in each element in the smallest unit of a substance

400

What are the three classes of elements?

Metals, metalloids, and nonmetals

400

What are the nonmetals in Group 7A called?

Halogens

400

What is an anion?

An ion with a negative charge

400

How much is an octet?

A set of eight

400

Do ionic compounds generally have high or low melting points?

They usually have high melting points
500

What does the IUPAC stand for?

The International Union of Pure and Applied Chemistry

500

What are the elements in Group 8A called?

Noble gases

500

The energy required to remove an electron from an atom is called.....

Ionization Energy

500

How is a cation produced?

When an atom loses one or more valence electrons

500

What can happen when an ionic compound is melted or dissolved in water?

An electric current