Answer:
A is the answer. Chemical changes happen when atomic bonds are broken or created during chemical reactions. Hence, in this case, it involve changes to molecular structure.
- Change in states are physical changes.
- When salts are dissolved in water, you can use Distillation to separate them. Distillation is a physical change as well.
- Dissolving is just physical change.
Explanation:
The statement that is true of a chemical change among the statements given in the question is "It involves changes in the molecular structure". The correct option among all the options that are given in the question is the first option or option "A". I hope the answer has actually come to your help.
Answer:
1. KBr
2. 2NH4OH
3. 2NO3
Explanation:
You just need to work backwords and take them step by step.
- Please let me know if these are right, if not I will correct them. Also, if you have any questions pertaining to any of this, let me know, and I will be happy to try and answer them.
Answer:
Hydrogenation
Explanation:
Look up the definition to confirm
Answer:
In liquids, particles are quite close together and move with random motion throughout the container. Particles move rapidly in all directions but collide with each other more frequently than in gases due to shorter distances between particles.
Answer:0.286M
Explanation:
10.7g / 149.89g/mol×0.25L
