Help with Chemistry, physical and chemical properties?

T

Tegan M

New member
Can someone tell me whether I am getting the right answers or not?
I feel stupid not getting this but anyways.

I have to say whether it's a physical or chemical property

1. Chemical formula H2O - Chemical?
2. Forms green carbonate when exposed to moist air- Physical?
3. Remains unchanged when in the presence of nitrogen- Physical?
4. Colorless- Physical?
5. Solid at normal temps. and pressures- Physical?
6. Ability to combine with another substance- Chemical?
7. Melting point- Chemical?
8. Liquid at normal temps and pressures- Physical?
9. Boiling point is 100 degrees C- Chemical?
10. Conducts electricity- Chemical?
11. Density is 1g/cm cubed- Physical?

Are my answers right? lol
 
1, chem
2. chem
3. chem
4. phys
5. phys
6. chem
7. phys
8. phys
9. phys
10. phys
11. phys

Chemical propertis ALWAYS involve or refer to some substance changing to another: changing IDENTITY ("forms green carbonate" "unchanged in presence of nitrogen" "...combine with other substance"). The first gives itself away by telling you you're looking at a chemical formula, which tells you something about the chemical behavior of H and O...they combine to form water.

Everything else is physical...but you can remember Physical properties as properties that you can determine WITHOUT changing the IDENTITY of the substance (Color, Boiling Point, Melting Point, Conductivity, Density, Solid/Liquid/Gas just says what phase
 
1, chem
2. chem
3. chem
4. phys
5. phys
6. chem
7. phys
8. phys
9. phys
10. phys
11. phys

Chemical propertis ALWAYS involve or refer to some substance changing to another: changing IDENTITY ("forms green carbonate" "unchanged in presence of nitrogen" "...combine with other substance"). The first gives itself away by telling you you're looking at a chemical formula, which tells you something about the chemical behavior of H and O...they combine to form water.

Everything else is physical...but you can remember Physical properties as properties that you can determine WITHOUT changing the IDENTITY of the substance (Color, Boiling Point, Melting Point, Conductivity, Density, Solid/Liquid/Gas just says what phase
 
Back
Top