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?

you can look at magnesium, it can react with oxygen to form oxides. (chemical) it is malleable and a solid at room temperature. (physical)

to measure its density, the mass and volume can be worked out and from this density too. look up the equation, it is quite easy :)

physical changes -- it can be melted, and oxidized

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kobenhavn kobenhavn · Answer 2 · 2019-08-30T12:20:19+02:00

Answer:

Let the substance is [tex]H_2O[/tex]

1. Physical property is defined as the property of a substance which becomes evident during physical changes. Example: Melting point of water is [tex]0^0C[/tex]

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.

[tex]density=\frac{mass}{volume}[/tex]

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.

[tex]2H_2O\rightarrow 2H_2+O_2[/tex]

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