Which statement compares the strengths of electric forces between particles of matter?
A. Van der Waals forces and ionic bonds are weaker than hydrogen
bonds.
B. Hydrogen bonds and metallic bonds are weaker than ionic bonds.
C. Hydrogen bonds and metallic bonds are stronger than ionic
bonds.
D. Van der Waals forces and hydrogen bonds are stronger than
metallic bonds.
SUBMIT

answer: c. the experiment shows that the red substance experienced a chemical change.

explanation: chemical change is the change in which chemical composition of the substance changes. physical change is the change in which there is no change in chemical composition.

chemical changes are accompanied by following changes:

a) precipitate formation

b) energy is released or absorbed

c) formation of bubbles

d) change in color

as it is given that the red color has disappeared and there is production of gas, it means the red substance has undergone a chemical change.

e

im not exactly sure but i think its b!

o conteúdo de calor de um sistema é igual à entalpia apenas para um sistema que é constante

you need to stop taking that class