GIVE a reason for each of the following.
1.Water is a universal solvent.
2 ice is lighter than water.
3. Ice-salt mixture is called freezing mixture. Silica gel packets are kept in bottles.
4. Silica gel packets are kept in bottles.
5. Aluminium reacts with steam but after some time the reaction stops.
Answers
Answer:
Water is a universal solvent because
Explanation:Water is called the universal solvent because more substances dissolve in water than in any other chemical. This has to do with the polarity of each water molecule. The hydrogen side of each water (H2O) molecule carries a slight positive electric charge, while the oxygen side carries a slight negative electric charge. This helps water dissociate ionic compounds into their positive and negative ions. The positive part of an ionic compound is attracted to the oxygen side of water while the negative portion of the compound is attracted to the hydrogen side of the water.
Answer:
1. Water is called the "universal solvent" because it is capable of dissolving more substances than any other liquid.
2. When water freezes, water molecules form a crystalline structure maintained by hydrogen bonding. Solid water, or ice, is less dense than liquid water. Ice is less dense than water because the orientation of hydrogen bonds causes molecules to push farther apart, which lowers the density.
3.Freezing mixture : It is a mixture of two or more substances (e.g. ice water and salt, or dry ice and alcohol) which can be used to produce temperatures below the freezing point of water.
4. Silica get pouches are very commonly used to absorb moisture and to keep things dry. They are often kept in unused water bottles, with camera lenses etc. to keep them dry. These pouches are ideal to reuse throughout, in places at home where there is excess of moisture
5. Like the reaction between magnesium and water, it is possible to react aluminium with steam. However, the aluminium oxide produced forms a barrier on the surface of the aluminium which prevents further reaction. When aluminium reacts with steam, the products are aluminium oxide and hydrogen gas.
Explanation:
hope this helps you
please mark me as brainliest