Pure substances are substances that are made up of only one kind of particles and has a fixed or constant structure. They are classified as elements
Answer:
Ammonium chloride, iron ,Sulphur and salt mixed together... they can be separated in the following methods.
1. Ammonium chloride is separated by sublimination... NC4CI is sublimable. Heat the mixture in a china dish and collect the funds of NC4CI (sublimable substance)
2. Bring a magnet close to the remaining mixture. Iron is magnetic substance and thus, it will be attracted towards the magnet. Iron is separated.
3. Sulphur is insoluble in water and salt is soluble. Add water to the remaining mixture and then wait for sedimentation. Separate the sulphur by decantation.
4. Heat the filtered salt solution to obtain salt.
<span>pH is a measure of how acidic/basic water is.</span>
The law of cross-cutting relationships states that an igneous intrusion or any other geologic feature of a rock must be younger than any rock it cuts.
Explanation:
Igneous intrusion is formed when the magma intrudes into the cracks of an existing rock.When the melted rocks solidifies and cool down the resulting feature is the Igneous intrusion
The law of cross cutting is basically a principle of geology that states that the geological feature of a rock that cuts the other is always younger.
Metamorphic rock in death valley,California in an example of the law of cross-cutting relationship
