Analyze a scientist observes a 5-ml sample of
an unknown substance. it is a blue liquid with a
density of 1.2 g/cm². the substance reacts with
carbon dioxide. list each of the properties of
matter the scientist observed and whether it is a
characteristic property of matter.

Becquerel expected to find ( he developed the photographic plate that had sun-exposed minerals on top of it. becquerel expected to find ( he developed the photographic plate that had been in the closed drawer.

Which feature do highland climates have that lower elevation areas do not?

Agroup of students is studying convection current. they fill two identical balloons with the same amount of helium. one balloon is placed in a freezer and the other is in an area with warm air. after 10 minutes, the balloon are released from a height of 1 meter. which of the following to the students most likely observe? a) the warm balloon expands and rises. the cold balloon shrinks and sinks b) the balloon both rise. the cold balloon is larger than the warm balloon c) the cold balloon expands and rises. the warm balloon shrinks and sinks d) the balloon rise at the same rate. both balloons are the same size