ME AJUDM 1)Escreva a fórmula estrutural bastão do hidrocarboneto HEPTA - 2,3 - DIENO. * 2)Escreva a fórmula estrutural condensada do hidrocarboneto HEPTA - 2,3 - DIENO. 3) A qual grupo de hidrocarbonetos pertence o composto HEPTA - 2,3 - DIENO?

Which sentence about particles in matter is true? a. atoms are present in solids and liquids but not in gases. b. the particles of matter are in constant motion. c. the same kinds of atoms are found in different elements. d. when a solid changes to a liquid, the sizes of the particles change.

All motion is caused by force? true or false

Which property of a rock remains unchanged by mechanical weathering? a. total surface area b. size and shape c. mineral composition d. sharpness