The following substances are pure: a pure sugar water B fresh air C ice and water D milk

The following substances are pure: a pure sugar water B fresh air C ice and water D milk

The one that belongs to the pure is C
A sugar water is a mixture of sugar and water
B air is a mixture of nitrogen, oxygen, carbon dioxide and other substances
C ice and water are the same substance, only one is solid and the other is liquid, belonging to pure substance
D milk contains water, milk and other substances, belongs to the mixture

The following substances are pure ()
A. Ice water mixture B. salt water C. seawater D. soda water

In a, ice and water are one substance, so ice water mixture is pure, so a is correct. In B, salt water is a mixture of salt and water, so B is wrong. In C, sea water is a mixture of calcium chloride, sodium chloride and water, so C is wrong. In D, soda water is a carbonated beverage, which contains carbonated water and many other substances, so D is wrong. So a

Which of the following substances are pure substances and which are mixtures? 1. Vinegar 2. Soybean milk 3. Copper core in wire 4. Milk 5. Sucrose 6. Iodized salt 7. Beer 8. Toothpaste

Pure 3 5 mixture 1 2 4 6 7 8