Plss help :( 1.
Branch of chemistry that involves the theories and experiments that describe chemical behavior.

2.
The study of substances that do not contain carbon.

3.
The study of the composition of matter (chemical make-up).

4.
The study of substances containing carbon.

5.
Branch of chemistry that studies the chemical processes of living things.

Why are people not able to scuba dive in the deep part of the ocean

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

Ahypothesis must be testable and falsifiable to be considered scientific a. trueb. false