Elements and Compounds

The smallest building block of all matter is the ________.

• molecule

• atom

• element

• compound

A(n) _______ is a pure substance made up of just one kind of atoms.

• compound

• element

• atom

• period

A ___________ is a mixture of two or more elements.

• atom

• element

• periodic table

• compound

The _____________organizes all the elements and shows their symbols and atomic weights.

• Periodic Table of the Elements

• Elemental Table of the Periods

• Element Table of the Atoms

• Periodic Table of the Compounds

There are _______ elements on the current periodic table.

• 92

• 1,347,016

• 18

• 118

Water, salt, sugar, and other common items are __________.

• elements

• compounds

• energy

• tables

Tags

NGSS.MS-PS1-1

Carbon, oxygen, and hydrogen are all common _________.

• elements

• atoms

• compounds

• integers

Tags

NGSS.MS-PS1-1

The biosphere means ___________.

• the air we breathe

• rocks and soil

• all living things on Earth

• all of the water on Earth

The hydrosphere is _____________.

• rocks and soil

• all living things on Earth

• all of the water on Earth

• the air we breathe

Tags

NGSS.MS-ESS2-1

NGSS.MS-ESS2-4

T or F: Everything we know of in the universe is made up of combinations of the 118 known elements.

• TRUE

• FALSE