Which two properties are used to define matter?

has mass and conducts heat

has buoyancy and volume

has mass and takes up space

conducts energy and has characteristic properties

The isotonic saline solution described in part a is connected to an unknown solution via a semipermeable membrane, the unknown solution level drops. based on this information, what can be said about these two solutions?

1) which of the following is the best example of a physical change? a) sugar dissolving in tea b) firefly glowing 2) in the combustion of ethane, what is/are the reactants? c2h6 + o2 ==> co2 + h2o a) c2h6 and o2 b) co2 and c2h6

No copying 15 pts how does a free-body diagram tell you about the net force on an object?