Chapter 8 Test

What did Mendeleev discover?

• A periodic table.

• 63 brand new elements.

• A set of patterns that applied to all the elements.

• The pronunciation of his last name.

What is an element?

• It is the Earth, Air, Wind, and Water of the world.

• A pure substance that cannot be broken down into other substances.

• It is a compound of 2 or more elements.

• It is a complex reaction between parts of nature.

Tags

NGSS.MS-PS1-1

When Mendeleev organized his periodic table and noticed patterns, what was he arranging it by?

• atomic mass

• color

• density

• melting point

Define atomic mass.

• The radius of an element's nucleus.

• The weight of an element.

• The volume an element takes up.

• Average of all the versions of an element.

Tags

NGSS.MS-PS1-5

The first periodic table was published by Mendeleev in what year?

• 1869

• 1985

• 2023

• 1063

Identify the protons in the nucleus.

Tags

NGSS.MS-PS1-1

Identify the neutrons in the nucleus.

Tags

NGSS.MS-PS1-1

Identify the electrons in the element.

Tags

NGSS.MS-PS1-1

How is the periodic table useful?

• It can tell you what elements are found in your body.

• It is only useful to chemists and people trying to make money printing periodic tables.

• It can tell you how long chemical reactions take.

• An element's properties can be predicted from its location on the periodic table.

What is the atomic number of Carbon?

• 6

• 12

• 14

• 8