Give reasons for the following.
1. Carbon dioxide is a compound
2. Flavoured milk is a mature
3. Alum is added in the process of sedimentation
4. Straining tea is sieving whereas steeping tea through tea bag is filtration
5. Atomicity differs from voiency.
Answers
Answer:
Carbon dioxide is a compound because: i) It has different chemical and physical properties from the carbon and oxygen the makes it. ii) You can only separate carbon from oxygen in carbon dioxide using a chemical reaction. iv) Carbon and oxygen that make up the carbon dioxide are chemically bonded to form this compound.
Answer:
1) (i) Carbon and oxygen are present in a fixed ratio of 3 : 8 by mass in carbon dioxide.
(i) Carbon and oxygen are present in a fixed ratio of 3 : 8 by mass in carbon dioxide.(ii) The constituents of carbon dioxide cannot be separated by simple physical methods.
2) Because you add a flavour to plain milk and the flavour may contain artificial ingredients.
3) By using alum in water the rate of sedimentation can be increased theis process is called loading here all insoluble solid that uses of the mixture get accumulation on alum leading to the separation of solid from insoluble solid particles.
4) Filtration is the method used for separating the liquid components from the solid components. Sieving is the used for separating large particles from solid components. In order to separate tea leaves from the tea as tea leaves are a solid component and tea is a liquid component, the filtration is used.
5) Atomicity is the number of atoms present in a molecule. Valency is the maximum number of electrons that an atom has to lose, gain or share in order to get stabilized. The main difference between atomicity and valency is that atomicity explains a molecular property whereas valency describes an elemental property.