Answer:
Water is added to a concentrated solution of sodium thiosulfate to dilute it.
Explanation: Water is a universal solvent. It has the capability to dissolve many substances in it. When water is added to a solution, the concentrated solution can be diluted. Dilute solution means the presence of water in high amount and solute quantity is very low.
Answer:
Both the identity and the properties of a substance change.
Explanation:
During most chemical reactions, both the identity and the properties of substances changes. The chemical and physical properties of a substance often changes during this kind reaction.
A chemical change has the following properties:
- A new kind of substance forms.
- It is always accompanied by energy changes
- Involves a change in mass of the substance
- Considerable amount of energy is involved in this reaction.
- The process is irreversible
Answer:
<h3>Energy is transferred from the hotter object to the cooler one, and the difference in temperature between them decreases.</h3>
Explanation
In celite filtration, diatomaceous earth is used to filter a solution containing very small particles that may pass through an ordinary filter. Hydrochloric acid is added after the celite filtration to remove the remaining particles in the filtration set-up. If the amount of acid added is not enough, it may cause discrepancies in the results.
All of them are important to identify a mineral and get information from it, but I'd say the least important is cleavage, as it gives you some information, but sometimes it's not definitive information, or you won't be able to get that information.
