Elements, compounds and mixtures

HOW MANY ELEMENTS ARE KNOWN TODAY ?

• 108

• 118

• 180

• 125

WATER IS A COMPOUND OF ______ AND _______.

• carbon dioxide and hydrogen

• oxygen and helium

• oxygen and hydrgen

• oxygen and hydrogen

WATER IS A COMPOUND.

• TRUE

• FALSE

• DEPENDS

SOLIDS MOLECULES ARE-

• FAR FROM EACH OTHER

• CLOSELY PACKED

• NO DEFINITE SHAPE

______ HAVE DEFINITE SHAPE AND VOLUME

• MIXTURES

• GASES

• SOLIDS

• LIQUIDS

WE ADD ____ TO SALT TO MAKE IT HEALTHIER.

A COMPOUND IS A SUBSTANCE MADE UP OF _________

UTERMIX

AMMONIA IS A -

• COMPOUND

• MIXTURE

• ELEMENT

COMPOUNDS AND ELEMENTS ARE______