Water containing carbonic acid and calcium
4. A
because PbCl2 is an ionic compound and it's solid, so it's a substance.
It cannot be mixture, because it's a pure molecule.
5. D
despite that both substances are gases, colorless they are different molecules, so they should have different either chemical and physical properties
6. C
this substance made from W atoms and others are made from molecules
Answer:
both will be at liquid state. the particles will move rapidly in all directions and will collide with other particles in random motion
Not sure if this was a true or false but ok great job it is true. :)
An electron i hope this helps
