Answer: concentration of solutions are expressed in various ways mol/L, mol/dm3, g/L etc
Explanation:
Answer:
The second one is the answer
Answer:
Dissolving sugar in water, burning paper, and melting gold are all chemical changes
Explanation:
The action cannot be reversed, or undone. Therefore it is a chemical change.
Boiling water is a physical change.
Answer: Chloroplasts
Reasoning: I just had my 830th lesson in school about these