Question

thermal enery is caused by the motion of
a. mixing water moleclues contained in a beaker
b. molecules in solid, liquid, and gas phases
c. mixing two different molecules together
d. molecules that have reached equilibrium
3. the density of an object with volume of 60.0 ml and a mass of 400.0 g is ______?
A. 0.150 g/ml
B. 2.89 g/ml
C. 5.50 g/ml
D. 6.67 g/ml
6. a banana turing brown when exposed to the air is an example of _____?
A. a heterogeneous mixture.
B. vaporization.
C. a chemical change
D. an amorphous solid
plz help me

Answer 1

The answer to the first question is B. Thermal energy is only the motion of atoms within a substance.
The answer to the second question is D. Density is just g/ml (400/60)
The answer to the third question is C I believe. Not entirely sure, it sounds like a question that's asking for a specific answer from your class. Though bananas turn brown due a chemical change in the peel.

Answer 2

yea your right thank u so much

Answer 3

@dlearm00