contestada

Chemical compounds undergo both physical and chemical changes. Which of the following is an example of a chemical change

Question 3 options:

heating a solid material to a liquid form


combining oxygen gas and hydrogen gas to form liquid water


cooling a gas into its liquid form


salt (NaCl) being dissolved into water

Respuesta :

MemeulousIsGr8
Combining oxygen gas and hydrogen gas to form liquid water is a chemical change. Pretty sure the rest are physical changes because a chemical change happens when a substance is altered completely. A physical change is when a substance keeps its components (I dunno what word to use) but just changes into a diferent shape. At least thats how my teacher explained it to me.

Otras preguntas