Question

Which of the following describe chemical properties?

Titanium is less dense than iron.
Sugar burns in air to form water and carbon dioxide
Mercury is a liquid at room temp
water freezes 0c

Answer 1

chemical properties is the changes in chemical manner of a
substances. Antacid tablets neutralize stomach acid is a chemical properties (it is an acid) which produce new products... salt and water
The others are physical properties

Answer 2

Answer: Option (b) is the correct answer.

Step-by-step explanation:

When any change in the chemical composition of a substance occurs then it is known as a chemical change.

For example, reactivity, toxicity, flammability, combustion etc are all chemical properties.

So, when sugar burns in air to form water and carbon dioxide then there occurs change in chemical composition of sugar. Therefore, chemical property of sugar also changes.

On the other hand, when there occurs no change in chemical composition of a substance then it is known as physical property.

For example, density, boiling point, freezing point etc are all physical properties.

Therefore, we can conclude that sugar burns in air to form water and carbon dioxide describe chemical properties.