Chapter 12 Test

Periodic means

Periodic law states that

Each vertical column on the periodic table is called a(n)

The elements to the right of the zigzag line on the periodic table are called

Most metals are

A horizontal row on the periodic table is called a(n)

Which one of the following tells the physical state of an element at room temperature?

What element is necessary for substances to burn?

Transition metals are

Mendeleev found that the properties of the known elements followed a pattern that repeated every

What element makes up about 20% of the air we breathe?

The carbon group has two metalloids, both of which are used to make

What element is used to make the most widely used compound in the chemical industry?

How did Mendeleev group the elements?

Which of the following statements about elements is true?

How many of the recently discovered elements follow periodic law?

Mendeleev's periodic table was useful because it

Which of the following is a property of alkali metals?

When a halogen reacts with a metal, what is formed?

What helps incandescent light bulbs last longer?

Which of the following elements is the most metallic?

Which of these elements is the least metallic?

Which element group has all nonmetals?

The number beneath carbon indicates the

The number at the top is the

A rule that states that repeating chemical and physical properties of elements change periodically with the atomic number of the elements is the

Iodine and chlorine are examples of

Pure _________________ are often stored in oil to keep them from reacting with water and oxygen.

Atoms of ______________________have two outer level (valence) electrons.

Proteins, fats & carbohydrates, which are compounds of ______________, are necessary for life on Earth.

Nitrogen and ___________________ can be combined to make ammonia.

When something is __________________, it occurs or repeats at regular intervals.

Mendeleev's table became known as the periodic table of the ________________.

All of the more than 40 elements discovered since 1914 follow the _____________________.

A family is also called a __________________.

The elements in groups 3 - 12 are known as _______________metals.

Sodium and potassium are _________________________ metals.

All the atoms of ___________________ are unstable.

Semiconductors, also known as ________________________, have some properties of metals and some properties of nonmetals.

Magnesium, calcium and barium are ___________________ metals.

These metals react with water to form hydrogen

This metal, part of the Boron Group is used for aircraft parts.

This is important to most living things.

Cement and chalk are compounds of this.

Some of these reactive metals are used to make steel.

Chlorine and iodine are these.

This is a colorless, odorless gas.

Diamond and soot are forms of this.

This makes up about 80% of the air we breathe.

Light bulbs last longer when they are filled with this gas.