Choose a substance you're familiar with. what are its physical and chemical properties? how would you measure its density? what are some physical and chemical changes it can undergo?

Let the substance is

1. Physical property is defined as the property of a substance which becomes evident during physical changes. Example: Melting point  of water is

Chemical property is defined as the property of a substance which becomes evident during chemical changes. Example: Reaction of water with active metals such as sodium

2. Density is measured as the ratio of amount of mass per unit volume.

3.  A chemical change is defined as a change in which a change in chemical composition takes place. A new substance is formed in these reactions.

A physical change is defined as a change in which there is alteration in shape, size etc. No new substance gets formed in these reactions.

Example: evaporation of water

some think that theories become laws, but theories and laws have separate and distinct roles in the scientific method. a law is a description of an observed phenomenon in the natural world that hold true every time it is tested. it doesn't explain why something is true; it just states that it is true.

answer: he got 23

explanation: