Although standard pressure is defined as 1atm, other units of pressure can also be used. It is common to report standard pressure using SI (standard international) units. What is the abbreviation for the SI unit of pressure? Write the unit abbreviation, do NOT write the full name of the unit.

Pa

Explanation: The SI unit for pressure is Pascals (Pa).

Pa

Explanation:

The SI unit of pressure is the pascal, abbreviated as Pa. Standard pressure is defined as 1 atm or 1.01325 × 105 Pa in SI units.

freezing

deposition

condensation

explanation;

melting also called fusion is the process where solid becomes liquid, sublimation is the process where solid becomes gaseous without first changing to liquid, deposition involves change from gaseous to solid state, freezing involves change from liquid to solid, boiling or evaporation involves change of liquid to gaseous state, while condensation is the change from gaseous state to liquid state.

endothermic reactions involves absorption of heat from the surroundings or the environment while exothermic reactions involves loss of heat energy to the surroundings.

in this case, sublimation, evaporation and melting are endothermic reactions (gain energy from the environment) while, freezing, deposition and condensation are exothermic (loss of energy to the surroundings) reactions.

graphing motion: mastery test

209be

what is the instantaneous acceleration of

the particle at point b?

0 meters/second?

10 meters/second?

12 meters/second?

velocity imetersisecond

15 meters/second?

20

time (seconds)

answer: 0 meters/second^2