Question

which statement describes all chemical changes but not all physical changes a bubbles are produced b a new substance forms c phase changes occur D a color change occurs

Answer 1

The correct answer is:

B; A new substance forms.

Explanation:

A physical change, such as a state change or dissolving, does not produce a new substance, but an abundant change does. In a chemical reaction, the atoms and molecules that connect with each other are described as reactants. Chemical reactions happen when chemical bonds are broken and formed. If the molecules in a substance crash into each other with enough energy, some of the bonds in the molecules can break. The atoms can make new bonds with different atoms. A new substance forms.

Answer 2

B; A new substance forms.