That is a chemical change.. Hope I helped!
Answer:
flammability, toxicity, acidity, reactivity, heat of combustion, chemical composition, structure
Explanation:
Answer:
Substance 4
Explanation:
Density is defined as mass per unit volume. A substance floats in another when its density is less than that of the substance on which it floats.
If an object is immersed in a denser liquid, it will sink
Since the density of water is 1 g/cm^3, any substance whose density is less than that of water will float in it.
If we look at the table, substance 4 has a density of 0.5g/cm^3. Hence, substance 4 is expected to float in water.
Answer:
The Earth's rotation on its axis
