Question

2. Milk turning sour is a
a. physical change.
b. reversible change.
c. chemical change.
d. none of these
3.
and salt are soluble in water.
a. Sugar
b. Chalk
c. Sand
d. Kerosene
4. In ice, the water molecules are/can
a. stuck together.
b. very close to each other.
c. move around freely.
d. move very fast.
5. The gas that bubbles out of an aerated drink is
a. nitrogen.
b. oxygen.
c. hydrogen.
d. carbon dioxide.
​

Answer 1

Answer:

2.chemical change

3.sugar

4.very close to each other

5. carbon dioxide