Periodic Table

What does an element's atomic number represent?

• the number of protons in an element

• an element’s state at room temperature

• how metallic an element is

• the number of atoms in a compound

A horizontal row in the periodic table is called....

• Group

• Family

• Column

• Period

What do the colors on the Periodic Table show?

• which element it is

• the metallic properties of the element

• the types of compounds the element can make

• whether the element is a solid, a liquid, or a gas at room temperature

Which of the following is characteristic of a metal?

• It is a liquid at room temperature.

• It conducts heat and electricity.

• It doesn’t have an atomic number.

• It cannot be melted down.

Tags

NGSS.MS-PS3-3

How is the Periodic Table helpful to scientists?

• It allows them to see how many electrons are in a compound.

• It shows what newly-discovered elements will be named.

• It shows them all the compounds that elements can create.

• It helps them find information quickly.

When scientists see the letters “Au,” they know it means “gold.” What is Au?

• the atomic number

• the element symbol

• the color

• the element’s section

A vertical column is called...

• group

• tower

• period

• crew

Why isn’t water on the Periodic Table?

• because it is a liquid at room temperature

• because it doesn’t have any protons

• because it is a compound

• because it is not made up of elements

Which of the following is not a characteristic of metals?

• Good conductor of electricity

• High melting point

• Dull surface

• Malleable

The vertical (up and down) columns in the Periodic Table are called

• groups

• towers

• periods

• atomic numbers